Something that should be noted is that the damaged top of WTC1 spun less then 1/8th of 1 degree then began its decent. This spin (most likley caused by an internal core failure) caused the north tower to flex out and then stabilize. This all happened at POI over the course of less then a quarter of a second in which the north tower undamaged region had already fallen 5 feet.
I noticed that in some of the home videos that are available on RUclips. I always wondered why the north tower collapsed first when it was the second one hit. Another video that shows the other side of the north tower from what news channels captured shows the plane striking the corner of the building, putting an angular gash in it. After I saw that, then the odd collapse of the north tower made sense. I watched another video about the south tower collapse and they described that as being a pancake collapse, the floors inside just fell like a stack of pancakes being dropped.
@@cadence4527 With all due respect, I must correct you. The first to be hit was the north tower, and the first to fall was the south tower. One of the theories is that having been impacted further down, the weakened area supported the weight of more floors, which caused the collapse, despite having been hit later.
@@cadence4527 WTC1s collapse is indictive of a failure of possibly the core no longer being able to hold floors 102 down to 96. The slow collapse of these floors can be seen in helicopter footage at first. Then it can be seen 5 to 7 minutes before the tower collapased in a massive issuing of black sooty smoke out of the highest POI wound. There is video roughly 15 minutes before collapse taken of the southern side of WTC1 at floors 92-roof which clearly shows at least floor 102 having failed and collapsed ontop of floor 101. This was a helicopter video in which the pilot famusly states "Its inevitable. The tower will collapse".
@@lobaandrade7172 Sure do. It also mentions the 106 floor "crumbling" (from Victim reports of that height most likely). There is clear video of the 101 floor being pancaked by the at least 102 if not also the 103 floor which all are on fire with extreme black smoke. ruclips.net/video/wZ34eWqbayk/видео.html The video above is from the History Channel (USA) Documentary: One Day in America. and is the closest to uncut of what one would be allowed to see on TV.
@@KaiKostack When I read that you won't "endorce conspiracy theories", I take it to mean you will only accept the oh-fishy-al story fed to you. Science and engineering don't work that way. You are not doing yourself any favors when you decide only the government story is the acceptable story.
all things concidered this looks very complicated . . so many constraints and possibly around 50,000 rigid body objects of various shapes and sizes . . but it does show the this collapse very well
@@pepelapiu2004 Thanks for your comment, but my work is based on science, not narratives. This simulation uses real data and engineering principles to analyze the collapse, not to support any story.
Except for the fact that it goes directly against all laws of physics. You can only produce this kind of bs if you tampered with this simulation in ways that would make any physicist/engineer cringe
@@Flyingdutchy33 I'm an architectural engineer and a physicist lmao. This simulation is extremely helpful in many ways. It can also help others understand more about how the buildings went down.
@@AllPileup A serious reply, I can tell. Look, you find me any engineer that will say that you can freefall a structure into its own footprint without meeting _any_ resistance on the way down by pancaking, we can resume talking. Until such time, refrain from making comments that do not contribute to the discussion.
I noticed that almost all the simulations started with the tower already being damaged. If you didn’t add any of the damage to your tower model, would the simulations still show it standing upright? I would assume that if not, then the collapses in your simulation are caused by your tower’s design itself being flawed. Then, your simulation would not accurately reflect the collapse caused by the plane, nor the tower’s decades of standing strong.
In fact, one of the first goals of the development was to make the tower standing stable, which, as you can see, was not easy. Complex structures also leave a lot of room for bugs. The initial damage should not have caused the tower to collapse.
Very incredible detailing and physics. A few things to note; 1. the central core of WTC 1 could be seen sagging as the collapse initiated, 2. because of the weakness of the concrete used (could only withstand approx 4000 lbs psi or around that), the concrete floors would've obliterated and crumbled as the collapse progressed. Because of this we cannot determine what the true collapse of either building really looked like as they were both enveloped in catastrophic amounts of dust and debris as they crumbled. WTC 2 gives us a better idea of how the building behaved as it collapsed because you can briefly see the top of the tower as it keels over before it gets shrouded in dust, but for another brief moment you see what looks to be the facade cascading away through the dust. It's very possible that both tower disintegrated at the very top early on in the collapse and created a debris ball in essence that pile drove into the bottom floors. I recently saw a video where an engineer mentioned that the building could've withstood between 6 and 11 floors being dropped down. Approximately 11 if it was gradual or approximately 6 floors if it were sudden. In both towers' cases, it was far more than 6 or 11 floors suddenly dropping down. Very keen to see where this goes, though.
I would argue that the physics in this video are by far the most lackluster part of it. They are entirely rigidbody, and the "bending" you see is in fact just constraints between objects in the system. There is no stress-strain analysis, nothing to do with heat whatsoever. The models, however, are very well done.
@@silencethequiet From the looks of it, these are only tests. It seems that each test is using different parameters of strength or rigidity in the parts of the structure. Physics engines can be finicky, especially when trying to replicate things as they are in the real world. Not all steel is built or cast identically. Steel that was cast in the 60's/70's for the original WTC differs when compared to modern steel. There's also the concrete that was used as well for the floors and walls. The concrete in the original towers was significantly weaker as well compared to what we use today, especially in the new 1 WTC tower. It'll be interesting to see how this develops and if it can be narrowed down to a more accurate model that can replicate the real thing as it was.
Your videos are depicting something closer to a house of cards or a pile of dominos, more than an actual steel structure that was designed to survive several airliner impacts. From the moment collapse is initiated, you are turning the structure into something that approaches a liquid with no real structural value.
This is not the actual simulation just yet. This is a video of the process of him going through numerous issues over the years trying to make the simulation work correctly. The end result is at the end of the video, which looks closer to real life than the earlier simulations. Everything before that is just "testing".
"Designed to survive several airliner impacts" That's false, in the maximum foreseeable risk insurance report, the buildings are ideally designed & insured for one large-body aircraft impact. Under the airliner impact analysis section the insurance MFR report severely underestimates the damage an airline could do to the buildings (I believe it's estimated at only 30% damage). What the design of the buildings did not account for was the uncontrolled fires that resulted after impact. If you are planning on doing insurance fraud, you don't underestimate the value of your assets, which is what was done in the Silverstein properties MFR report.
@@Top_Maths Imagine that. Designing a building specifically to resist airline impacts, but never thinking of the fuel!! Lol Is it possible that they never considered the fuel because back in the 70's they had this ridiculous belief that open air kerosene fires would not destroy steel? You know, those retarded myths of the crazy 60's!!
@@pepelapiu2004 people in the '60s were dumb. Like seriously, there was a product called headlight wipers, Which was like windshield wipers for your headlights. The worst part is that people actually bought it thinking that it would be useful. Dumb product, dumb buyers, dumb generation. Also they were all racist, so yeah, they were all pretty dumb.
@@Top_Maths I've taken a closer look at the artifacts and I think they're not that bad in 4K resolution. You have to know that the source material isn't perfect either. For example, the strong moiré effect in some shots was already introduced during rendering because I tried different lighting settings, some of which were really bad. So I'd say if someone really needs source material, probably for their own video projects, they can ask me. And if your idea is to upload the entire archive for conservation reasons, then I think the idea is appealing, but at the same time I'm realistic enough to know that almost nobody will ever look at it. 🙂
It's been so long since this was announced and no word until now, I honestly thought this project had been abandoned. So glad that it's still going, and I can't wait to see the final product.
The End Sequence looks very interessing and quite similar to real collapse . But the real collapse was covered in dust , so i very interesing to the final video .
Your simulation is coming along well despite the limitations inherent. Understandably, you can't simulate any sort of deflection in any steel members, which they'd be subjected to during a collapse. Deflection is important. Falling members from above meeting static structure below create opposing force impacts where falling steel would bend before they break others off their joints. With the simulated members being rigid models without ductility, the collapse mechanics behaves starkly different to real life.
The elements in the simulation are rigid, but the connections are not. In fact, plastic deformations are simulated, as are damping effects in collisions. In the next video I will show component tests where you can see this better.
Yes! He stays next to what he announced so long ago! Thank you for that Big Mountain full of development, Troubleshoot, and Time that you invested to simulate the currently most historic event of the 21st Century. You are a Person were i look up to that huge level of expertise that you experienced from all these Years of working with Blender. I wish i could some stuff learn from an certain Experienced person like you.
Dude, I have been following your simulation progress over the years, and I gotta say. You're one of the best. I've also been dabbling in blender simulations over the years and even though my work is nearly not as good as yours, it has certainly gotten a lot better. Good luck.
I have a question about the trusses. So in this simulation it looks like the joints are where force and torque is transferred and when the force exceeds the cross sectional strength it breaks. Does this allow the prediction of buckling? It seems to be accurate on the large scale but in the detailed view of the truss I noticed the joints were the failure point but I feel like trusses should have the ability to buckle. So I am wondering if the constraints allow predicting the behavior of buckling, without showing it, by using extreme dislocation of the joints. Because buckling is energy absorption I think this would be important in showing the transformation from high resilience to high energy absorption where particularly in high compression force without any bending moment. I also enjoy your videos involved with similar energy absorption things. lol
Of course, simplifications are used to simulate such a large building. Nevertheless, the connections are calculated in their various degrees of freedom including plastic deformation, which will allow for buckling and damping effects. In the next video I will show some component tests that were used to determine the connection properties.
Also have to keep in mind that the framing for the radio tower served as both a brace for the radio antenna under high winds, and also as a reinforcement point that connected the outer support structures to the supports at the core of the building. It worked to redistribute some of the load. In the real-world footage as the building collapses, you can note that the radio tower and central columns at the top of the building begin to sink before the outer walls give way. The framing both redistributed loads, and also was capable of dragging down everything else with it in a chain-reaction.
El ultimo render, que es el se parece mas a la realidad, se corta. Puedes terminarlo hasta el colapso total ce la torre, o es que a partir de determinado momento se detiene la caida y queda la parte inferior de pie?
It did strip the perimeter columns away as it failed, with the prefabricated truss system being the only weak link in this particular scenario that happened. If the truss connection is the perimeter to the core, and it definitely was, this is how the failure took place. With all the smoke and dust, it was difficult to tell. The south tower tips to the angle of the impact zone. While the north tower more lined up. If the truss system fails, it's the only way for it to happen. It was really 2 collapses at once.one was the perimeter columns having nothing to hold them to the core any longer,and that ones below it weren't going to prevent it. The 2nd is the core,but without the perimeter failing, the core couldn't fail on its own. The floors below were still intact, but after that, much of an area was gone. Nothing was going to stop it.
No matter how good you make this model, one thing you definitely should keep in mind is that your model has to ahow the collapse of the floors, then the exterior steel hasto fall.apart from lack of support and lastly about half of the towers core surviving oh and that the initial crash caused a shockwave of damage all the way down to the lobby due to the fireball For example survivors mention seeing stairwells cracked same with the walls and stuff in their offices and you couldsee the damage on the lobby from when the naudet brother filling inside the north tower went inside it
This model shows a lack of structural integrity from the base the lower 2/3 of the building was structurally sound These were the tallest buildings in the world built with an integrity for earthquakes, hurricanes and withstand aircraft impacts.
Why are the service floors always missing? The towers were 3 buildings stacked on top of each other. You see two distinct bands approximately 1/3rd then 2/3rds the way up. Those floors house things like lift mechanisms, Air conditioning etc and have steel girders out to the perimeter no Trusses. So the Towers collapsed from the top down after damage and a one or more hours of fire. Apparently the Conservation of Energy does not apply in this case. In the 70's there was a far longer Fire in one of the Towers which went to around 5 floors centred around the 19th floor. The building stood for another 20 years yet a FAR Greater weight would have been on those flimsy Trusses.
The floors that are taller are the mechanical floors in this model, but the building has no cladding so you can't really notice them, but the steel columns are coloured silver to make the towers look cladded
But the bottom of the buildings did not shatter, this is the opposite of what happened. ??? Not sure I understand why you did not show the tops shattering. The bases were intact.
Eu vi outra simulação que chegava mais próximo da realidade do que aconteceu, as torres entraram em flambagem antes de cair, ou seja, as paredes delas fizeram uma espécie de barriga para dentro causando assim um efeito dominó de todos os andares!
Question: Of course the structure would have to be a lot stronger at the base of the towers, compared to near the top of the towers. This is because the first floor structure had to support the 109 floors of weight above it while the 90th floor structure only had to support the 20 floors of weight above it. Did your models account for thicker columns and thicker core structure at the bottom?
@@MalarPaper9666 Well. The idea of a weaker top structure falling into a stronger lower structure and demolishing the lower structure first. That is a ridiculous concept. This is what the absurd pancake collapse theory is based on - a weaker top structure falling through a progressively stronger lower structure and demolishing all of it as it falls, suspiciously looking like the lower structure is not offering any resistance. I mean, look at the videos again. They all look like a sturdy steel structure suddenly turned into a liquid or a house of cards.
@@KaiKostack Very well. So you are comfortable with a weaker top structure falling into a stronger lower structure and the weaker structure pulverizing the stronger one all the way to the bottom. All seemingly at near free fall speeds? And of course, should anyone have a problem with this logic, they are by definition, crazy conspiracy kooks on par with flat earthers, right?
@@pepelapiu2004 If the physics simulation doesn't have a problem with it, why should I? Everyone is entitled to their own opinion, but you should be able to back it up with evidence if you want it to be taken seriously.
in the original footage you can ssee the demolution is started/triggere from a place close to top. and its said that the metal block falling from top started it in short explanation i mean..
😂😂 ahora resulta la simulación k se desplomó de bajo para arriba ☝️ jajajajja si bien se nota en los videos como detonan todas las partes para que caiga exactamente en el mismo lugar .vean videos como se derriban edificios y veran que fue igual ...😅 según ellos es creíble esto jajajaj
This isnt even close to what actully happened you should make that clear- it does point out though the the interior box columns simply dissapear- buildings dont fall like that
Ok,what about the Pentagon. Where is the video footage of the jetliner smashing into it at ground level? There is only one that I have seen,and it was from a security camera in the east parking lot that shows a blur traveling at ground level before exploding on impact. And it doesn’t look like a jetliner it looks like a cruise missile. No high rise buildings have collapsed from fire onto their own footprints before or since 911. On that day three did within hours of each other. Rudy Giuliani said on live television to the world,they have decided to pull tower seven,as the building was burning. Google search tenants of Tower Seven. Deepest respect to all memory’s of the innocent victim’s and their Family’s.
@@MrAtrus64 1. ruclips.net/video/0SL2PzzOiF8/видео.html 2. Okay so you saw the video. 3. The biggest cruise missile in the world is only about 18 feet. Unless you're suggesting an ICBM somehow managed to hit a key military target without NORAD alerting anybody about it is frankly just batshit crazy. 4. en.wikipedia.org/wiki/List_of_fires_in_high-rise_buildings. 5. Actually six. WTC 3, 4, & 6. WTC 5 was severely damaged and later had to be demolished. Parts of 4 still survived but also had to be demolished as well. So much for "never forget WTC7" when you forget four entire buildings. 🤦♂ 6. Rudy never actually said this, Larry Silverstein did. He then later clarified to BBC he meant to pull out from trying to save the building, concerned about the safety of the firefighters who were in 7. 7. The tenants in WTC 7 were mostly offices owned by Solomon Smith Barney, an investment bank in NYC's financial district. Other banks include Standard Chartered, Federal Home Loan, Provident, & American Express. Considering the World Trade Center was a "TRADE CENTER"; it is not surprising to see federal agencies like the US Security & Exchange Commission, US Equal Employment Opportunity Commission, and organizations like the National Association of Insurance Commissioners Securities. All of these agencies help protect the pockets of hard working Americans who may be ensnared in investment, currency, and banking scams. The United States Secret Service is known to investigate currency & payment crimes when they aren't in charge of protecting political leaders. Their office in the World Trade Center is not abnormal for them. The way you talk is the reason why conspiracy theorists are hated because you throw a bunch of sentences and strings of words together like bots and then call everyone who disagrees with you "sheep" or a shill, despite the fact you have absolutely no context on the sentences you repost and call "evidence".
This is a video showcasing him "testing" the simulation and encountering bugs, not an actual example of how it went down irl. Most people could have figured that out immediately. You should be ashamed of your comment.
Sorry friend, all those simulations are completely inaccurate. As if you have never looked at any actual videos of the drop. The buildings all started with failure at the top first. We are supposed to accept a pancake collapse theory.
@@pepelapiu2004 This video is the journey of his simulations. It's a good illustration of the amount of work and time that goes into making simulations like this, and also shows an honest view of the frustrations faced when trying to simulate such a monumental 3D model with >50,000 objects.
@@dylbie Well, I am also very disappointed with his stance that he won't support any "conspiracy theory". In other words, he will only consider the oh-fishy-all story he's been fed by his government and media. That is not how science works. Science and engineering don't value one source of knowledge more than an other with ridiculous labels.
@@pepelapiu2004 He's not basing it off of any story or source, he's basing it off of videos from that day where you can clearly observe the collapse for yourself, and then he's re-creating it. Also, he isn't from America, so HIS government isn't feeding him any lies at all.
It can't melt, but it can weaken steel beams, so they are not able to hold weight. Also, right before collapse, there was clear evidence on videos of melted metal bursted from towers.
This is the one we've all been waiting for! I know how much work this all takes, so I have huge respect for the work you've done here and with BCB in general! 😎
Once you figure out the physics, will you make a simulation of the South Tower? I hope you do as it will help paint a fuller picture of what really happened.
Pretty obvious what happened, planes hit the buildings and thousands of tons of debris & heat caused the internal collapse of the buildings, ya ever play jenga?
Something that should be noted is that the damaged top of WTC1 spun less then 1/8th of 1 degree then began its decent. This spin (most likley caused by an internal core failure) caused the north tower to flex out and then stabilize. This all happened at POI over the course of less then a quarter of a second in which the north tower undamaged region had already fallen 5 feet.
I noticed that in some of the home videos that are available on RUclips. I always wondered why the north tower collapsed first when it was the second one hit. Another video that shows the other side of the north tower from what news channels captured shows the plane striking the corner of the building, putting an angular gash in it. After I saw that, then the odd collapse of the north tower made sense.
I watched another video about the south tower collapse and they described that as being a pancake collapse, the floors inside just fell like a stack of pancakes being dropped.
@@cadence4527 With all due respect, I must correct you. The first to be hit was the north tower, and the first to fall was the south tower. One of the theories is that having been impacted further down, the weakened area supported the weight of more floors, which caused the collapse, despite having been hit later.
@@cadence4527 WTC1s collapse is indictive of a failure of possibly the core no longer being able to hold floors 102 down to 96. The slow collapse of these floors can be seen in helicopter footage at first. Then it can be seen 5 to 7 minutes before the tower collapased in a massive issuing of black sooty smoke out of the highest POI wound. There is video roughly 15 minutes before collapse taken of the southern side of WTC1 at floors 92-roof which clearly shows at least floor 102 having failed and collapsed ontop of floor 101. This was a helicopter video in which the pilot famusly states "Its inevitable. The tower will collapse".
@@JosephTobin1you have a link to that video? That sounds fascinating
@@lobaandrade7172 Sure do. It also mentions the 106 floor "crumbling" (from Victim reports of that height most likely). There is clear video of the 101 floor being pancaked by the at least 102 if not also the 103 floor which all are on fire with extreme black smoke.
ruclips.net/video/wZ34eWqbayk/видео.html
The video above is from the History Channel (USA) Documentary: One Day in America. and is the closest to uncut of what one would be allowed to see on TV.
A quick reminder: This video is focused on scientific simulations and does not endorse any conspiracy theories. See the video description for details.
Nooooooooooooooooooooo
I dropped everything i was doing to watch this.
Went to the TV room to watch it in 4K and even wiped my glasses just in case lol
@@KaiKostack When I read that you won't "endorce conspiracy theories", I take it to mean you will only accept the oh-fishy-al story fed to you.
Science and engineering don't work that way.
You are not doing yourself any favors when you decide only the government story is the acceptable story.
all things concidered this looks very complicated . . so many constraints and possibly around 50,000 rigid body objects of various shapes and sizes . . but it does show the this collapse very well
@@pepelapiu2004 Thanks for your comment, but my work is based on science, not narratives. This simulation uses real data and engineering principles to analyze the collapse, not to support any story.
Wow I can’t wait for the final product
Yeah, I'd be very keen to see what material properties were employed in order to defy all known laws of physics.
@@Flyingdutchy33oh boo hoo continue liking your own comments
@@supermarioplushes2517 I did no such thing. Besides, how do I like my own comment twice?
Boohoo?
@@supermarioplushes2517why did you like your own comment?!?!
@@supermarioplushes2517That’s got to be the weirdest hate comment for attention I’ve ever seen.
This is about to be the most realistic simulation on this particular topic anyone has ever seen. You should be proud of that.
Except for the fact that it goes directly against all laws of physics. You can only produce this kind of bs if you tampered with this simulation in ways that would make any physicist/engineer cringe
@@Flyingdutchy33 I'm an architectural engineer and a physicist lmao. This simulation is extremely helpful in many ways. It can also help others understand more about how the buildings went down.
@@MalarPaper9666 I think you need to revisit your physics classes
@@Flyingdutchy33 ok mr quantum
@@AllPileup A serious reply, I can tell.
Look, you find me any engineer that will say that you can freefall a structure into its own footprint without meeting _any_ resistance on the way down by pancaking, we can resume talking.
Until such time, refrain from making comments that do not contribute to the discussion.
I noticed that almost all the simulations started with the tower already being damaged. If you didn’t add any of the damage to your tower model, would the simulations still show it standing upright?
I would assume that if not, then the collapses in your simulation are caused by your tower’s design itself being flawed. Then, your simulation would not accurately reflect the collapse caused by the plane, nor the tower’s decades of standing strong.
In fact, one of the first goals of the development was to make the tower standing stable, which, as you can see, was not easy. Complex structures also leave a lot of room for bugs. The initial damage should not have caused the tower to collapse.
@@KaiKostack alright, thanks for clearing that up!
@@KaiKostack I'm assuming you had everything "deactivated" from start?
wake up world, Kostack has dropped
World
World
World
World
World
1:37
"I don't feel so good, Mr. Stark"
That final shot is eerily reminiscent of the real thing. Looking forward to seeing the final result.
Very incredible detailing and physics. A few things to note; 1. the central core of WTC 1 could be seen sagging as the collapse initiated, 2. because of the weakness of the concrete used (could only withstand approx 4000 lbs psi or around that), the concrete floors would've obliterated and crumbled as the collapse progressed. Because of this we cannot determine what the true collapse of either building really looked like as they were both enveloped in catastrophic amounts of dust and debris as they crumbled. WTC 2 gives us a better idea of how the building behaved as it collapsed because you can briefly see the top of the tower as it keels over before it gets shrouded in dust, but for another brief moment you see what looks to be the facade cascading away through the dust. It's very possible that both tower disintegrated at the very top early on in the collapse and created a debris ball in essence that pile drove into the bottom floors. I recently saw a video where an engineer mentioned that the building could've withstood between 6 and 11 floors being dropped down. Approximately 11 if it was gradual or approximately 6 floors if it were sudden. In both towers' cases, it was far more than 6 or 11 floors suddenly dropping down. Very keen to see where this goes, though.
I would argue that the physics in this video are by far the most lackluster part of it. They are entirely rigidbody, and the "bending" you see is in fact just constraints between objects in the system. There is no stress-strain analysis, nothing to do with heat whatsoever. The models, however, are very well done.
@@silencethequiet From the looks of it, these are only tests. It seems that each test is using different parameters of strength or rigidity in the parts of the structure. Physics engines can be finicky, especially when trying to replicate things as they are in the real world. Not all steel is built or cast identically. Steel that was cast in the 60's/70's for the original WTC differs when compared to modern steel. There's also the concrete that was used as well for the floors and walls. The concrete in the original towers was significantly weaker as well compared to what we use today, especially in the new 1 WTC tower. It'll be interesting to see how this develops and if it can be narrowed down to a more accurate model that can replicate the real thing as it was.
holy shit the last shot looks extremely similar to what it looked like
WE GOT THE SIMULATION BEFORE GTA 6 LETS GO
Your videos are depicting something closer to a house of cards or a pile of dominos, more than an actual steel structure that was designed to survive several airliner impacts.
From the moment collapse is initiated, you are turning the structure into something that approaches a liquid with no real structural value.
This is not the actual simulation just yet. This is a video of the process of him going through numerous issues over the years trying to make the simulation work correctly. The end result is at the end of the video, which looks closer to real life than the earlier simulations. Everything before that is just "testing".
"Designed to survive several airliner impacts"
That's false, in the maximum foreseeable risk insurance report, the buildings are ideally designed & insured for one large-body aircraft impact. Under the airliner impact analysis section the insurance MFR report severely underestimates the damage an airline could do to the buildings (I believe it's estimated at only 30% damage). What the design of the buildings did not account for was the uncontrolled fires that resulted after impact.
If you are planning on doing insurance fraud, you don't underestimate the value of your assets, which is what was done in the Silverstein properties MFR report.
@@Top_Maths Imagine that. Designing a building specifically to resist airline impacts, but never thinking of the fuel!! Lol
Is it possible that they never considered the fuel because back in the 70's they had this ridiculous belief that open air kerosene fires would not destroy steel? You know, those retarded myths of the crazy 60's!!
@@pepelapiu2004 people in the '60s were dumb. Like seriously, there was a product called headlight wipers, Which was like windshield wipers for your headlights. The worst part is that people actually bought it thinking that it would be useful. Dumb product, dumb buyers, dumb generation. Also they were all racist, so yeah, they were all pretty dumb.
Hey Kai,
The youtube compression is a nightmare. Can you please make the raw video available for download?
In general I wouldn't mind, but I don't know if the extra effort of hosting is worth it for the few diehard viewers.
@@KaiKostack You don't have to host it, you can always upload it to a mega or do a torrent and I (and others) can seed.
@@KaiKostack So... can you do it?
@@Top_Maths I've taken a closer look at the artifacts and I think they're not that bad in 4K resolution. You have to know that the source material isn't perfect either. For example, the strong moiré effect in some shots was already introduced during rendering because I tried different lighting settings, some of which were really bad. So I'd say if someone really needs source material, probably for their own video projects, they can ask me. And if your idea is to upload the entire archive for conservation reasons, then I think the idea is appealing, but at the same time I'm realistic enough to know that almost nobody will ever look at it. 🙂
@@KaiKostack 🤦♂
It's been so long since this was announced and no word until now, I honestly thought this project had been abandoned. So glad that it's still going, and I can't wait to see the final product.
This is definetly South tower collapse 9:14
The End Sequence looks very interessing and quite similar to real collapse .
But the real collapse was covered in dust , so i very interesing to the final video .
All of these show a collapse from the base and not the points of impact.
Bingo. How did they miss that?
Because you clearly didn’t watch until the end
Well, this is extremely encouraging. Worth the wait.
I appreciate your work simulation of the WTC, please keep up the great work that you do.
Much Blessings to you n your's friend.
The simulation is wrong in one important aspect: it depicts significant heaps of post collapse material.
Absolutely amazing, literally been checking this channel every week for an update 😂
Your simulation is coming along well despite the limitations inherent. Understandably, you can't simulate any sort of deflection in any steel members, which they'd be subjected to during a collapse. Deflection is important. Falling members from above meeting static structure below create opposing force impacts where falling steel would bend before they break others off their joints. With the simulated members being rigid models without ductility, the collapse mechanics behaves starkly different to real life.
The elements in the simulation are rigid, but the connections are not. In fact, plastic deformations are simulated, as are damping effects in collisions. In the next video I will show component tests where you can see this better.
Really cool, can’t wait for final results
We’re getting close!
We are very far from real physics.
Yes! He stays next to what he announced so long ago! Thank you for that Big Mountain full of development, Troubleshoot, and Time that you invested to simulate the currently most historic event of the 21st Century. You are a Person were i look up to that huge level of expertise that you experienced from all these Years of working with Blender. I wish i could some stuff learn from an certain Experienced person like you.
1:39 wtf!??
Fr
But it collapsed from the top not the bottom
This is attempt nr 8000 to trick people and hide the truth
I felt the same way until I watched the entire video, if anything he's showing that it was caused by the plane crash & nothing but
Oh wow! This was quite a journey. When is like the expected final product of the simulation? This 14 year journey has been wild.
Dude, I have been following your simulation progress over the years, and I gotta say. You're one of the best. I've also been dabbling in blender simulations over the years and even though my work is nearly not as good as yours, it has certainly gotten a lot better. Good luck.
I've been waiting so long for you to release this
How many YEARS did it take of analyzing every frame in every video of the tower collapsing to make this simulation accurate?
Small mistake. All these "simulations" seem to assume that the bridges were not steel, but glass...
False, check the component tests in his latest video which demonstrate significant deformation in the floor trusses before breaking.
amazing stuff, really goes to show how complex the buildings were structurally (also amazing that this is a solo project)
I have a question about the trusses. So in this simulation it looks like the joints are where force and torque is transferred and when the force exceeds the cross sectional strength it breaks. Does this allow the prediction of buckling? It seems to be accurate on the large scale but in the detailed view of the truss I noticed the joints were the failure point but I feel like trusses should have the ability to buckle. So I am wondering if the constraints allow predicting the behavior of buckling, without showing it, by using extreme dislocation of the joints. Because buckling is energy absorption I think this would be important in showing the transformation from high resilience to high energy absorption where particularly in high compression force without any bending moment. I also enjoy your videos involved with similar energy absorption things. lol
Of course, simplifications are used to simulate such a large building. Nevertheless, the connections are calculated in their various degrees of freedom including plastic deformation, which will allow for buckling and damping effects. In the next video I will show some component tests that were used to determine the connection properties.
Also have to keep in mind that the framing for the radio tower served as both a brace for the radio antenna under high winds, and also as a reinforcement point that connected the outer support structures to the supports at the core of the building.
It worked to redistribute some of the load.
In the real-world footage as the building collapses, you can note that the radio tower and central columns at the top of the building begin to sink before the outer walls give way. The framing both redistributed loads, and also was capable of dragging down everything else with it in a chain-reaction.
that antenna is on some kind of drugs
But when Depressed Ginger makes videos like this, he gets struck down.
El ultimo render, que es el se parece mas a la realidad, se corta. Puedes terminarlo hasta el colapso total ce la torre, o es que a partir de determinado momento se detiene la caida y queda la parte inferior de pie?
It did strip the perimeter columns away as it failed, with the prefabricated truss system being the only weak link in this particular scenario that happened. If the truss connection is the perimeter to the core, and it definitely was, this is how the failure took place. With all the smoke and dust, it was difficult to tell. The south tower tips to the angle of the impact zone. While the north tower more lined up. If the truss system fails, it's the only way for it to happen. It was really 2 collapses at once.one was the perimeter columns having nothing to hold them to the core any longer,and that ones below it weren't going to prevent it. The 2nd is the core,but without the perimeter failing, the core couldn't fail on its own. The floors below were still intact, but after that, much of an area was gone. Nothing was going to stop it.
I have been waiting!
No el 11 de septiembre😢
The collapse of the towers are definitely some of the most disturbing sights I seen
All these online experts telling you that your work is wrong, so why arnt they doing the same thing
Me when I pull out the wrong jenga:
1:38 the fact it started tearing itself apart-
How could the staircase on floor 14 hold
He back
This will only feature only North Tower or both buildings? Is there any chance in the final simulation for Lobby/Mall level view of collapse?
The final simulation will cover the entire complex. While not every detail can be included, I will aim to show as much as possible.
No matter how good you make this model, one thing you definitely should keep in mind is that your model has to ahow the collapse of the floors, then the exterior steel hasto fall.apart from lack of support and lastly about half of the towers core surviving oh and that the initial crash caused a shockwave of damage all the way down to the lobby due to the fireball
For example survivors mention seeing stairwells cracked same with the walls and stuff in their offices and you couldsee the damage on the lobby from when the naudet brother filling inside the north tower went inside it
This model shows a lack of structural integrity from the base the lower 2/3 of the building was structurally sound These were the tallest buildings in the world built with an integrity for earthquakes, hurricanes and withstand aircraft impacts.
YOOOOOO IT DROPPED
Why are the service floors always missing? The towers were 3 buildings stacked on top of each other. You see two distinct bands approximately 1/3rd then 2/3rds the way up. Those floors house things like lift mechanisms, Air conditioning etc and have steel girders out to the perimeter no Trusses. So the Towers collapsed from the top down after damage and a one or more hours of fire. Apparently the Conservation of Energy does not apply in this case. In the 70's there was a far longer Fire in one of the Towers which went to around 5 floors centred around the 19th floor. The building stood for another 20 years yet a FAR Greater weight would have been on those flimsy Trusses.
The floors that are taller are the mechanical floors in this model, but the building has no cladding so you can't really notice them, but the steel columns are coloured silver to make the towers look cladded
I think anyway
COMPLETE IDIOCY Those beams are bolted interlocked and welded.
I saw both buildings collaps and none of simulations in this video even remotely comes close to it being accrurate.
Terrifying but very instructive
But the bottom of the buildings did not shatter, this is the opposite of what happened. ??? Not sure I understand why you did not show the tops shattering. The bases were intact.
By the way, can you make simulation of Baltimore bridge collapse?
Is this assuming all the parts cant break apart?
The collapse happened at the top of the buildings not the bottom unless your saying they blow up the base first🤔
Отличное воспроизведение обрушения. Сразу видно, что здания быди подорваны искусственным образом.
Is this the wtc tower 2
Eu vi outra simulação que chegava mais próximo da realidade do que aconteceu, as torres entraram em flambagem antes de cair, ou seja, as paredes delas fizeram uma espécie de barriga para dentro causando assim um efeito dominó de todos os andares!
Y el WTC 7 ?
excellent music
9/11/2002 ?
In the miniature it looked like 9/11 ☠️
Cómo se destruyó el acero con el impacto del avión?
What’s the music? Sounds like Chernobyl
Really cool graphics but not explain the collapse of the building just different simulations of what did not happen
Question: Of course the structure would have to be a lot stronger at the base of the towers, compared to near the top of the towers.
This is because the first floor structure had to support the 109 floors of weight above it while the 90th floor structure only had to support the 20 floors of weight above it.
Did your models account for thicker columns and thicker core structure at the bottom?
It did have stronger columns towards the bottom. He has said so in some of the other comments.
@@MalarPaper9666 Well. The idea of a weaker top structure falling into a stronger lower structure and demolishing the lower structure first. That is a ridiculous concept. This is what the absurd pancake collapse theory is based on - a weaker top structure falling through a progressively stronger lower structure and demolishing all of it as it falls, suspiciously looking like the lower structure is not offering any resistance.
I mean, look at the videos again. They all look like a sturdy steel structure suddenly turned into a liquid or a house of cards.
Yes, the supports get thicker towards the bottom. If you look closely, you can even see that in the wireframe shot at 9:31.
@@KaiKostack Very well. So you are comfortable with a weaker top structure falling into a stronger lower structure and the weaker structure pulverizing the stronger one all the way to the bottom. All seemingly at near free fall speeds?
And of course, should anyone have a problem with this logic, they are by definition, crazy conspiracy kooks on par with flat earthers, right?
@@pepelapiu2004 If the physics simulation doesn't have a problem with it, why should I? Everyone is entitled to their own opinion, but you should be able to back it up with evidence if you want it to be taken seriously.
4:00 its like how the buil collapsed rip to the people that died
Edit: nvm 6:04
I mean, can you imagine how many people have been pancaked bettwen the floors?
so when is the final product gonna be launched? is there a date?
Why is quick?
5:56 очень похоже
demasiados escombros.. solo es polvo pulverizado lo que caia en caida libre ..
Das ist nicht das was wir 2001 gesehen haben.
Es beginnt oben und löst sich auf.
Самая последняя симуляция ближе всего к действительности, так как разрушение шло сверху вниз.
Such a weak simulation. The towers were blown apart from top to bottom.
Annoying background music!
👍
in the original footage you can ssee the demolution is started/triggere from a place close to top. and its said that the metal block falling from top started it in short explanation i mean..
💊
😂😂 ahora resulta la simulación k se desplomó de bajo para arriba ☝️ jajajajja si bien se nota en los videos como detonan todas las partes para que caiga exactamente en el mismo lugar .vean videos como se derriban edificios y veran que fue igual ...😅 según ellos es creíble esto jajajaj
2ND PERSON!
😮
What are these physics?😂It looks like if Magneto attacked the towers.
This isnt even close to what actully happened you should make that clear- it does point out though the the interior box columns simply dissapear- buildings dont fall like that
This video is just clips of him "Testing" and encountering bugs, and not an actual collapse analysis or case study. He did make that clear.
This looks interesting,but what about tower Seven.
He did that video years ago. It has millions of views.
Ok,what about the Pentagon.
Where is the video footage of the jetliner smashing into it at ground level?
There is only one that I have seen,and it was from a security camera in the east parking lot that shows a blur traveling at ground level before exploding on impact.
And it doesn’t look like a jetliner it looks like a cruise missile.
No high rise buildings have collapsed from fire onto their own footprints before or since 911.
On that day three did within hours of each other.
Rudy Giuliani said on live television to the world,they have decided to pull tower seven,as the building was burning.
Google search tenants of Tower Seven.
Deepest respect to all memory’s of the innocent victim’s and their Family’s.
@@MrAtrus64
1. ruclips.net/video/0SL2PzzOiF8/видео.html
2. Okay so you saw the video.
3. The biggest cruise missile in the world is only about 18 feet. Unless you're suggesting an ICBM somehow managed to hit a key military target without NORAD alerting anybody about it is frankly just batshit crazy.
4. en.wikipedia.org/wiki/List_of_fires_in_high-rise_buildings.
5. Actually six. WTC 3, 4, & 6. WTC 5 was severely damaged and later had to be demolished. Parts of 4 still survived but also had to be demolished as well. So much for "never forget WTC7" when you forget four entire buildings. 🤦♂
6. Rudy never actually said this, Larry Silverstein did. He then later clarified to BBC he meant to pull out from trying to save the building, concerned about the safety of the firefighters who were in 7.
7. The tenants in WTC 7 were mostly offices owned by Solomon Smith Barney, an investment bank in NYC's financial district. Other banks include Standard Chartered, Federal Home Loan, Provident, & American Express. Considering the World Trade Center was a "TRADE CENTER"; it is not surprising to see federal agencies like the US Security & Exchange Commission, US Equal Employment Opportunity Commission, and organizations like the National Association of Insurance Commissioners Securities. All of these agencies help protect the pockets of hard working Americans who may be ensnared in investment, currency, and banking scams.
The United States Secret Service is known to investigate currency & payment crimes when they aren't in charge of protecting political leaders. Their office in the World Trade Center is not abnormal for them.
The way you talk is the reason why conspiracy theorists are hated because you throw a bunch of sentences and strings of words together like bots and then call everyone who disagrees with you "sheep" or a shill, despite the fact you have absolutely no context on the sentences you repost and call "evidence".
A very strange structural design.
What do you mean?
You should be ashamed of your terrible animation that inaccurately shows the building disintegrating from the bottom
This is a video showcasing him "testing" the simulation and encountering bugs, not an actual example of how it went down irl. Most people could have figured that out immediately. You should be ashamed of your comment.
the guy who organized all this may even still be alive.
What are you talking about ?
!
Sorry friend, all those simulations are completely inaccurate. As if you have never looked at any actual videos of the drop.
The buildings all started with failure at the top first.
We are supposed to accept a pancake collapse theory.
Read the description
Of course we are, it is true and no complex physics knowledge is required to get it.
@@pepelapiu2004 This video is the journey of his simulations. It's a good illustration of the amount of work and time that goes into making simulations like this, and also shows an honest view of the frustrations faced when trying to simulate such a monumental 3D model with >50,000 objects.
@@dylbie Well, I am also very disappointed with his stance that he won't support any "conspiracy theory". In other words, he will only consider the oh-fishy-all story he's been fed by his government and media.
That is not how science works. Science and engineering don't value one source of knowledge more than an other with ridiculous labels.
@@pepelapiu2004 He's not basing it off of any story or source, he's basing it off of videos from that day where you can clearly observe the collapse for yourself, and then he's re-creating it.
Also, he isn't from America, so HIS government isn't feeding him any lies at all.
Jet fuel can't melt steel beams
Please elaborate.
@@MalarPaper9666
Jet fuel cannot burn at a heat high enough to melt steel.
@@amrelmaghraby5641 Alright.
It can't melt, but it can weaken steel beams, so they are not able to hold weight. Also, right before collapse, there was clear evidence on videos of melted metal bursted from towers.
@@aresnir2725
Bruh, we know. The saying is just common ragebait used by the internet
Пиздешь эта анимация и все,они бы никогда не упали сами по себе,так было нужно и выгодно,жаль простых нив чем неповинных людей
The lies
This is the one we've all been waiting for! I know how much work this all takes, so I have huge respect for the work you've done here and with BCB in general! 😎
Bro PLEASE stop edging us 😭😭😭
show us mooooore
Once you figure out the physics, will you make a simulation of the South Tower? I hope you do as it will help paint a fuller picture of what really happened.
Yes.
Pretty obvious what happened, planes hit the buildings and thousands of tons of debris & heat caused the internal collapse of the buildings, ya ever play jenga?
I’m so excited for the finished product