There is a problem with this setup: the "frictionless" constraint attaches the entire back surface of the bracket to the wall. In reality, top part of the bracket would bend a little forming a gap with the wall. It should be another stress line that goes through bolt axes. Imagine a long bracket (say 300mm each side) with bolts at the very bottom of it (say, 10mm from the bottom edge). The wall would support only lower 10mm of it - imagine how the bracket would bend where the bolts are. Anyway, great video - thanks!
5 лет назад+1
Think this setup was an introductory one... But now that Lars has educated us, question is: how can we refine it and more accurately model these constraints ? Should the wall reaction be limited to the lower part of the back face, up to the bolts axes which should define a torsion line ? How can this be done ?
That's exactly what I think. the first simulation setup was more accurate. 1. the part will bend at the top and form a gap. 2. if the wall is soft then the bottom part will push into the wall and the whole part would try to pivot and will start pulling away at the top while pushing in at the bottom. The screws will be a pivoting point, after that either the thread pops out of the wall or the screw holes fail (exactly as indicated in the first simulation!) at the top of the screw holes.
Yes, you would have to model the wall with contact against the bracket. A bit more complex of a problem to solve, but I believe that the solver can handle those types of problems.
Excellent tutorial! I am taking a CAD CAM digital manufacturing course and this week we are going to work on simulation on Fusion 360- Watching your tutorial helped me to understand better. Looking forward to contact you for further questions.
All your tutorials are amazingly engaging! This one remembered me of something I tell my students whenever I have the occasion: "Structures behave the way you build them, not the may you simulate them" ... Well, I must admit I kind of care who Von Mises was ;) Greetings from Spain and thank you sooooo much for your generous contributions...
Lars. I LOVE your teaching style. Take it from me, a teacher, that you have what it takes. That said, I am wondering if you have done a shape optimization tutorial or are planning on one? Seeing where stress occurs on this simple bracket part is great. But if I don't actually know what shape I want, and am instead more interested in the performance of a part, then I think shape optimization is ideal. What comes to mind in that regard are animal bones. They are odd shaped at first glance, but when analyzing their performance, it's obvious their shape is ideal for what they do. In other words, they have been shape optimized! It would be engaging to do a tutorial looking at bones to see how optimized they actually are. Comments?
5 лет назад+1
Another great video of yours Lars, taking us by the hand and relieving the fear of steping into a dark pond :) Gratefully
Very good again Lars. I remember this sort of FEA analysis used to take hours to mesh up by hand, an overnight to solve, and 2"in of printout to wade through. How fortunate we all are now. A few clicks and we're done. Thanks again. Great explanation.
Hi Douglas Thomson Thank you for watching! Yes, we have come a long way in that regards. Though, there are something super cool about being able to do all those hand calculations like in the old old days :-)
Love this, even if you cant use the correct material for lets say 3D printing and find out exactly how much load it can take, you can see how different techniques on strengthening the part will affect the outcome in strength.
Does that "Frictionless" constraint force the top of the part to stay against the "wall" too though? In real life, the top of the part could still leave the wall and cause stress around the tops of the holes. I think the real result is actually between the two first simulations.
I bought an year's paid subscription to fusion 360 recently just to find out that all the features i bought the paid subscription for, require me to pay even more to use.
Wonderful video Lars! This is an area that I am very exited and interested in. It has also been an area of confusion for me. Much less so now. Thank you.
Been a struggle to get my head around F360 in a month - and the sim scales were driving me nuts! You hit the nail on the head. My hat off to you. But do have a Q - how come the structural analysis does not have the same "actual displacement" deformation feature as the stress analysis display???
Just a thought. Would it be a more accurate simulation if the wall constraint starts from the bottom of the part to the top of the bolt hole since that is the pivot point of the part with the given load.
Is the second constraint actually correct? (the frictionless one) Now (tell me if i'm wrong) the bracked is fixed "to the wall" using the entire back face, and this removes the strain from the screw holes. The problem is that the wall prevents the bottom part of the bracket from tilting back, but does not actually prevent the top portion from bending ahead stressing the screw holes. I'm just curious, probabily it was a semplification for the tutorial However great tutorial, very useful.
Excellent! Great help. was just starting to try to get a grip on that simulation thing, and this is a wonderful first step. Impatient to see the next.... (nudge, nudge!) :-)
Hi Lars. Thanks for the explain. But i think the last "wall" fixture was an mistake. The part must be in the upper level from the screws not mounted to the wall. But how we (you) can solve this fixture? The lower part will be pressed to the wall, and the upper will be bended from the wall away. Maybe you can explain it? Cheers Remo
You could use split face command to break the back side face. Then you would have to top moving. It is all about how detailed you need to go for getting useful results
Hello Lars! I am designing and building my my own type of reverseble hydraulic pump, i have only so far played around with sketchup and let the pro´s do the cad designs. But i have not got Fusion 360 and trying to learn it my self. I was wondering if you wanted to build my engine for educational purpose? I can send you some pictures of it and we´ll see if you are interested in modelling it! Best regards, A fellow nord.
Enjoy all your tutorials, without them could not learn fusion 360, question on this video about load. Why are the fasteners (bolts) not shown, they the major component in the system.
Hi Willard Marshall Thank you for watching! They could be in there, but many times you want to simplify the model as much as possible and if you can get the results simplified, that's what you want.
Hi Lars. you are Brilliant man but i have a question about rigid body connector. could you please make some video to show us how it works? when should i use it? thanks
Thanks Lars, fantastic tutorial video. Do you perhaps how to analyse uniformly distributed / varying loads over a portion of a beam? I'm busy with stress analysis of beams. Can that load be of a different shape instead of a circle?
Hi Lars, I have worked with CAD software over a decade ago, but I am quite new to Fusion 360. Do you know of a way to simulate gravity and torque in an animated assembly with several moving parts? Something like a lever and fulcrum with shifting weights that can move along the fulcrum. Do you have a video that would explain that, or could you create a video that would show how that is done?
Hi Lars A few lessons back you mentioned that its good practice to turn off all other components before doing a press-pull on the active one. I am designing a china cabinet that has well over 30 components and its a pain turning each off before press pulling on the one I am working with. Is there a way to turn off ALL the components - then I could just turn back on the one I'm working with. Love your videos - the best by far !! cheers Derrick
Hi Chris Christenson Thank you for watching! 3D printed parts can be difficult just from the nature that it is layer by layer. You could adjust any material to resemble your printers parts by possibly do some testing. But different 3D printers could give differnt results as one printer is enclosed and one is open
Nice video sir. By the way, i wonder if fusion360 is capable doing FEA for any anisotropic material (such as polymer or composite) cause i thought that von misses is only appropriate on isotropic material.
Hi Lars, thanks for your great tutors! I was wondering how you can solve press-fits, like a bushing press-fitted in a housing. Other simulation software have special type of contacts for this such as shrink-fit or so, I don’t see this type of contacts and I didn’t find any example of shrink-fit so far, how would you define such in Fusion 360 simulation?
The bushing would be assembled (press-fitted) in the housing with a known interference, then the goal is to compute the stress, the contact pressure and the displacement of the inner diameter of the bushing. Then repeat at different temperatures and see the differences by playing with different materials as bushing and as housing. Therefore I don’t see bonded is the correct type of contact... any other clue?
There is a problem with this setup: the "frictionless" constraint attaches the entire back surface of the bracket to the wall. In reality, top part of the bracket would bend a little forming a gap with the wall. It should be another stress line that goes through bolt axes. Imagine a long bracket (say 300mm each side) with bolts at the very bottom of it (say, 10mm from the bottom edge). The wall would support only lower 10mm of it - imagine how the bracket would bend where the bolts are. Anyway, great video - thanks!
Think this setup was an introductory one... But now that Lars has educated us, question is: how can we refine it and more accurately model these constraints ? Should the wall reaction be limited to the lower part of the back face, up to the bolts axes which should define a torsion line ? How can this be done ?
That's exactly what I think. the first simulation setup was more accurate. 1. the part will bend at the top and form a gap. 2. if the wall is soft then the bottom part will push into the wall and the whole part would try to pivot and will start pulling away at the top while pushing in at the bottom. The screws will be a pivoting point, after that either the thread pops out of the wall or the screw holes fail (exactly as indicated in the first simulation!) at the top of the screw holes.
Yes, you would have to model the wall with contact against the bracket. A bit more complex of a problem to solve, but I believe that the solver can handle those types of problems.
This video pretty much simplifies most things on simulation at the beginner level and it is still valid for March 2022.
Best watched at 1.5x speed
Do that every video, more knowledge in same time!!!! ,😊
Yea
Thanks
Excellent as usual. This was my first expereince with a simulator of any kind, and I'm not an ME, but I still easily followed along and understood.
That is awesome to hear James Aman .Thank you for watching the videos
Incredibly, helpful! I never comment on RUclips videos but this was so helpful that I had to. Thanks again!!!
Happy you found this useful! Thank you
This is absolutely amazing. Super helpful and easy to follow.
You are a legend . This really opened up the complexity that I did't understand.
well explained i want to see more advanced simulation from you Thankyou @christensen
Very useful video! Thanks!
Excellent tutorial! I am taking a CAD CAM digital manufacturing course and this week we are going to work on simulation on Fusion 360- Watching your tutorial helped me to understand better. Looking forward to contact you for further questions.
Really great video for fusion 360 simulation, great help ,nice and clear style, Many greetings from Cairo
All your tutorials are amazingly engaging! This one remembered me of something I tell my students whenever I have the occasion: "Structures behave the way you build them, not the may you simulate them" ... Well, I must admit I kind of care who Von Mises was ;) Greetings from Spain and thank you sooooo much for your generous contributions...
Thank you 👍😊And thank you for watching
Very Good presentation! You kept it simple and to the point. I would love to see a presentation like this on CFD for beginners.
Lars. I LOVE your teaching style. Take it from me, a teacher, that you have what it takes. That said, I am wondering if you have done a shape optimization tutorial or are planning on one? Seeing where stress occurs on this simple bracket part is great. But if I don't actually know what shape I want, and am instead more interested in the performance of a part, then I think shape optimization is ideal. What comes to mind in that regard are animal bones. They are odd shaped at first glance, but when analyzing their performance, it's obvious their shape is ideal for what they do. In other words, they have been shape optimized! It would be engaging to do a tutorial looking at bones to see how optimized they actually are.
Comments?
Another great video of yours Lars, taking us by the hand and relieving the fear of steping into a dark pond :)
Gratefully
Very good again Lars. I remember this sort of FEA analysis used to take hours to mesh up by hand, an overnight to solve, and 2"in of printout to wade through. How fortunate we all are now. A few clicks and we're done. Thanks again. Great explanation.
Hi Douglas Thomson Thank you for watching!
Yes, we have come a long way in that regards. Though, there are something super cool about being able to do all those hand calculations like in the old old days :-)
Yeah, takes a ton of maths knowledge to be able to get it right. Great videos Lars. Keep them coming. Enjoying using Fusion more and more.
Thank you so much. really great explanation. Must watch video for beginners.
You are so very welcome :-) Thank you for watching!
Absolutely incredible. I am starting pretty new with this and your explanations make perfect sense! Thank you Lars!
You are so very welcome. Thank you for watching
Good video, Lars - much appreciated.
You are so very welcome :-) Thank you for watching!
This is another section i have not got into yet would like to thanks lars great video as always and the info
Hi All Customz Thank you for watching!
Love this, even if you cant use the correct material for lets say 3D printing and find out exactly how much load it can take, you can see how different techniques on strengthening the part will affect the outcome in strength.
On top of that, I’m pretty sure you can add your own materials and with a little bit of testing you should be able to get very close to real life
True, and characteristics for most of the plastics commonly used for 3D printing can be found easily so i agree, you can get very close :)
Thanks for posting but I had to watch at 3.2x to get through it. You really know your stuff so write a script to prevent repetition.
Amazing tutorial, gets straight to the point and explains everything very well
Awesome video. Thank you. I have had Fusion 360 for a day.
such a great teacher!!!!!!!!
Great training video, thanks Lars.
Does that "Frictionless" constraint force the top of the part to stay against the "wall" too though? In real life, the top of the part could still leave the wall and cause stress around the tops of the holes. I think the real result is actually between the two first simulations.
Was just about to mention that.
If the "frictionless" constraint stiffens the whole face, the simulation would be incorrect.
Thanks Lars, nice beginning point to using this incredible tool suite.
Thank you 👍😊And Thank you for watching
Thank you
I bought an year's paid subscription to fusion 360 recently just to find out that all the features i bought the paid subscription for, require me to pay even more to use.
Thank you very much Lars i'm new with simulation so this vide0 helps very much. Greetings out of Holland.
Thank you! Really informative and sympathetic!
You are so very welcome
thank you! cheers from Brazil
This was really useful and simple to undestand, Thanks!
You are so very welcome :-) Thank you for watching!
Excellent teacher
Sir great work for beginners like me. Keep it up and thank you.
That is awesome to hear Darshit Raval .Thank you for watching the videos
Lars..Thank You!
You are the very best !!! I am learning rapidly as a result of your efforts.
That is awesome to hear Doug Doty .Thank you for watching the videos
Wonderful video Lars! This is an area that I am very exited and interested in. It has also been an area of confusion for me. Much less so now. Thank you.
You are so very welcome :-) Thank you for watching!
Been a struggle to get my head around F360 in a month - and the sim scales were driving me nuts! You hit the nail on the head. My hat off to you.
But do have a Q - how come the structural analysis does not have the same "actual displacement" deformation feature as the stress analysis display???
Pretty slick. I managed to get a sensible simulation working in no time. Thanks.
You are so very welcome :-) Thank you for watching!
Hi! I didn't understand why it's necessary using the frictionless gadget. What's change if I don't?
Just a thought. Would it be a more accurate simulation if the wall constraint starts from the bottom of the part to the top of the bolt hole since that is the pivot point of the part with the given load.
Is the second constraint actually correct? (the frictionless one)
Now (tell me if i'm wrong) the bracked is fixed "to the wall" using the entire back face, and this removes the strain from the screw holes. The problem is that the wall prevents the bottom part of the bracket from tilting back, but does not actually prevent the top portion from bending ahead stressing the screw holes.
I'm just curious, probabily it was a semplification for the tutorial
However great tutorial, very useful.
Hi marco mutti Thank you for watching!
You are not wrong :-) Check out the follow up:
ruclips.net/video/Qe_7UR87p-o/видео.html
I have watched this video Thank you Lars Christensen ..im beginner to CAD Software
Lars sure loves his drinks :D Whiskey while waiting for the simulation to solve, champagne when it's done! Thank you for the great video Lars!
You are a great help! keep up the great work!
Thank you Mazin Adwar Salim And thank you for watching.
Best,
Lars
Thank you, my favourite channel for everything fusion
Thank you LaExtraordinaire
Excellent! Great help. was just starting to try to get a grip on that simulation thing, and this is a wonderful first step. Impatient to see the next.... (nudge, nudge!) :-)
That is awesome to hear Le Bear CNC .Thank you for watching the videos
awesome. helped a bunch
Thank Dude for providing such great content for free. Will you make a video for simulating a chassis in fusion 360? give it a thought.
Absolutely perfect! Great video!!
Simple , clear, and very useful 👍🏻
Great video! Thanks a lot!
fantastic - i was just searching for this - thank you!
That is awesome to hear KevCarrico .Thank you for watching the videos
Thanks for your great Video, very very nice and clear English und easy to unterstand for me.
Greetings from Germany
You are so very welcome :-) Thank you for watching!
thanks lars, needed this for a desk for a custemer thank you
You are so very welcome 👍😊
Hi Lars. Thanks for the explain. But i think the last "wall" fixture was an mistake. The part must be in the upper level from the screws not mounted to the wall. But how we (you) can solve this fixture? The lower part will be pressed to the wall, and the upper will be bended from the wall away. Maybe you can explain it? Cheers Remo
You could use split face command to break the back side face. Then you would have to top moving. It is all about how detailed you need to go for getting useful results
Lars Christensen wow, great ans simple idea. Thanks
Hello Lars!
I am designing and building my my own type of reverseble hydraulic pump, i have only so far played around with sketchup and let the pro´s do the cad designs. But i have not got Fusion 360 and trying to learn it my self. I was wondering if you wanted to build my engine for educational purpose? I can send you some pictures of it and we´ll see if you are interested in modelling it!
Best regards, A fellow nord.
I wish you were my professor in university 😪 such a nice explanations thank you so much sir fr this video i got some motivation ❤
Hello my name is Hussain I love the way you explain for all the beginner in your documentary.
That is awesome to hear Hussain Oseni .Thank you for watching the videos
Enjoy all your tutorials, without them could not learn fusion 360, question on this video about load. Why are the fasteners (bolts) not shown, they the major component in the system.
Hi Willard Marshall Thank you for watching!
They could be in there, but many times you want to simplify the model as much as possible and if you can get the results simplified, that's what you want.
Hi Lars. you are Brilliant man but i have a question about rigid body connector. could you please make some video to show us how it works? when should i use it? thanks
very good video, thank you
great lesson, thanks
Is this sim capable of working out plastic deformation to calculate force or displacement required to bend something a certain amount?
so helpful sir
u re the best man
nice job.thanks so much
Thanks Lars, fantastic tutorial video. Do you perhaps how to analyse uniformly distributed / varying loads over a portion of a beam? I'm busy with stress analysis of beams. Can that load be of a different shape instead of a circle?
“And my PhD, yeah well that never happened.” Lol. Awesome Lars.
Hi Lars, thanks for the explanation, keep on doing the good job :-)
Thank you Dirk Roggeveen
Hi Lars, great video! I'm a big fan of yours! May you also import directly scan data in form of a STL file and do simulation on that?
Very interesting..i just want to know do we have to know engineering and math to learn these kinds of stuff?
Hi Lars,
I have worked with CAD software over a decade ago, but I am quite new to Fusion 360. Do you know of a way to simulate gravity and torque in an animated assembly with several moving parts? Something like a lever and fulcrum with shifting weights that can move along the fulcrum. Do you have a video that would explain that, or could you create a video that would show how that is done?
you can choose deformation scale: actual - adjusted0.5x - adjusted - adjusted2x - adjusted5x and will look more natural
Hi Emik Latypov Thank you for watching! AND thank you for your comment
you are welcome, Lars!
Thanks Lars, great tutorial really helped :)
You are so very welcome :-) Thank you for watching!
Thank you for sharing this informative video! 🐦🖐
You are so very welcome :-) Thank you for watching!
Great video, thanks!
You are so very welcome :-) Thank you for watching!
YES!! It finally makes some sense. :-)
Thank you Schack Lindemann
Thank you very much
Nice video, thx for that, very helpful ! How can we tell the simulator that the contact with the wall is just below the screws and not above ?
Thanks Lars this video really helped out
You are so very welcome :-) Thank you for watching!....Love your screen name :-)
Thanks Lars :-)
great job sir
Thank you Dennis Sams
Hi Lars
A few lessons back you mentioned that its good practice to turn off all other components before doing a press-pull on the active one. I am designing a china cabinet that has well over 30 components and its a pain turning each off before press pulling on the one I am working with. Is there a way to turn off ALL the components - then I could just turn back on the one I'm working with.
Love your videos - the best by far !!
cheers
Derrick
You can select a single (or multiple components) in the browser then right click and select "Isolate".
Yes, Great advice from David!
Simulation appears to be blocked in my student edition
My question is how to define a vertices constraint in the middle of a round bar in static stress analysis ?
Why can't we use plastic for this like for 3D printed parts? Also, you need higher res on your webcam.
that's also what I wanted to know :(
Hi Chris Christenson Thank you for watching!
3D printed parts can be difficult just from the nature that it is layer by layer. You could adjust any material to resemble your printers parts by possibly do some testing.
But different 3D printers could give differnt results as one printer is enclosed and one is open
I like your tutorial videos. THX
You are so very welcome :-) Thank you for watching!
thanks so much :)
thanks!
Nice video sir. By the way, i wonder if fusion360 is capable doing FEA for any anisotropic material (such as polymer or composite) cause i thought that von misses is only appropriate on isotropic material.
More Good stuff..... Thanks ! !
You are so very welcome :-) Thank you for watching!
Thank so much to you,
You are so very welcome
Thanks my dude. Great video for noobs like me.
You are so very welcome :-) Thank you for watching!
I am now to 360. And I am trying to set my car wheel out on the simulation but struggling to know what I need to do.
Hi David devnet Thank you for watching!
What type of analysis are you trying to do on the wheel?
i am trying to find out if it can take a certain load be for buckling at speed and impact load.
naizz and simply explained for beginners, like usual the thumbs down are not commented by "the owners"...
Thank you emslv moddslv
Hi Lars, thanks for your great tutors!
I was wondering how you can solve press-fits, like a bushing press-fitted in a housing. Other simulation software have special type of contacts for this such as shrink-fit or so, I don’t see this type of contacts and I didn’t find any example of shrink-fit so far, how would you define such in Fusion 360 simulation?
Bonded comes to mind, but I guess an important first question is, what are you trying to do? :-)
The bushing would be assembled (press-fitted) in the housing with a known interference, then the goal is to compute the stress, the contact pressure and the displacement of the inner diameter of the bushing.
Then repeat at different temperatures and see the differences by playing with different materials as bushing and as housing. Therefore I don’t see bonded is the correct type of contact... any other clue?
Good, simple; How can i find different examples as told in clip
Hy all, which software is better in simulations? Thanks
I many of my friends prefer Inventor. Though, it isnt not different from Fusion 360
love the jersey accent
Thank you, Jersey is too cool for me :-) I have to stick to my fating Danish accent.
Have a great day!