- Видео 10
- Просмотров 1 156 687
erikoui
Добавлен 2 июн 2009
The Formula Behind all of Structural Engineering: Euler-Bernoulli Bending from First Principles
In this video I explain how the Euler-Bernoulli beam bending is derived and go through a simple cantilever beam example.
Просмотров: 28 971
Видео
STRUCTURAL DYNAMICS, and why RESONANCE works the way it does (with math!)
Просмотров 4773 года назад
The absolute basics of structural dynamics, going through single degree of freedom systems to resonance. Consider subscribing: ruclips.net/user/erikoui 3blue1brown video: ruclips.net/video/p_di4Zn4wz4/видео.html
Anchorage length.
Просмотров 1,1 тыс.3 года назад
Anchorage length, development length or bond length is the extra length we add to rebar in reinforced concrete. I get into the details of how it is calculated in both ACi and EC2.
FLAT SLABS, PUNCHING SHEAR and the COLLAPSE of Pipers Row car park
Просмотров 5 тыс.3 года назад
FLAT SLABS, PUNCHING SHEAR and the COLLAPSE of Pipers Row car park
![Erik - Journey [synthwave] + demo#1](http://i.ytimg.com/vi/NrO3AXxOeBY/mqdefault.jpg)
Erik - Journey [synthwave] + demo#1
Просмотров 494 года назад
The music turned out quite nice. The visuals are procedurally generated in real time by reading the music data. Get the source code here: github.com/erikoui/Synthwave_js_demo
Finite Element Analysis intro - Galerkin approximation & 1D heat problem
Просмотров 1,2 тыс.4 года назад
How FE analysis works behind the scenes, from the fundamental math behind it to a 1D example problem. Feel free to ask any questions in the comments.
Drawing anamorphic 3D spheres like sidewalk 3d art (tutorial)
Просмотров 964 тыс.13 лет назад
3D sidewalk art is actually the inverse of perspective... I found this method in a book about perspective drawing, it was something about circles in perspective
3d underground stairs drawing(3d illusion drawing on paper)
Просмотров 11 тыс.13 лет назад
just another video for the series. More to come!
3d Deck of Cards drawing!(chalk 3d art on paper)
Просмотров 15 тыс.13 лет назад
My second video of my 3d drawing series.There are many more to come!
How to draw 3d stuff on paper! (Like sidewalk 3d drawings)
Просмотров 129 тыс.14 лет назад
-this video is really basic,it's just to show how it's made and yes, i know it isn't a building,it's just a box -it's really easy to do with your webcam
It’s crazy that they figured this out two centuries ago
There is literature that mention the equation with a negative sign. Why is that?
Probably just depends on what sign convention is used. (If you define z as up or down)
Me when I find a channel with a fascinating video style, content that I'd enjoy, and an upload date not more recent than a year: ☹️
bro this was the best video about this topic so far, please keep making videos like this man! congrats absolutely awesome
Look at this video, it is great. This guy was great.
Me salvaste la vida amigo
@1:07, WHERE is that housing development? Does it have a name?
Video about M= EI/ ρ ??
Yo who was learning differential equations in high school
Excellent presentation, gave me great light into the theory of beams. pls upload more sir
Good video burst 4:23, should be 1/rho = dtheta/ds
yes !
Very good explanation on anchorage length tyvm
4:11 actually, rho = ds/dtheta
no
oh sorry didnt read wvery well
Loved the history behind the assumptions and derivations, excellent video!
This equation has been proven to be inaccurate
i wonder the background music
ruclips.net/video/NrO3AXxOeBY/видео.html
How accurate would you bet that Euler's equation is for real scenarios with slender columns?
Excelente la explicación
4:00 how would you prove this ?
The tangents at A and B are perpendicular to the radii at A and B, and also we know that the angle between two non-parallel lines is equal to the angle between their normals.
@@erikoui Thank you. If proof is that easy, why waste time at 3:55 - 4:02 saying: "You can prove that the angle at O is d.theta for yourself if you'd like" , when in the same amount of time you could have said: "The tangents at A and B are perpendicular to the radii at A and B, and also we know that the angle between two non-parallel lines is equal to the angle between their normals." ?
Thanks for the amazing video!
4:13 Shouldn't the curvature 1 over ro be equal to inverse of ds over d theta?
Hi erikoui, I, too, am fascinated with the mathematics describing how a beam deflects. So much in fact I developed an explanation for the 3b1b SoME (linked below). Basically cutting the beam into many many segments seeing how they interact and then resolving the total result. Check it out. ruclips.net/video/4B2OVDku75c/видео.html
I wonder how the model of a rod which can’t describe a torsion is still very popular
So it means that if the applied force is not a point force at the free end, but is a function of location x, then we cannot use the simplified version of the Bernoulli beam, right? I mean then we need to integrate the equation four times in order to figure out the displacements of beam, am I correct?
That is an excellent question. Bernoulli beam theory still applies and d_theta/d_x is just a function (the derivative of theta, or the second derivative of the bending moment function M(x)). In the case of several loads (e.g. two point loads or a udl with a point load at an arbitrary point) you would calculate the deflection as if each load was applied on its own, and then add up the results (assuming the beam acts linearly elastic). Hope this helps!
@@erikoui what if the force itself is a function of location, like a distributed load, so we should integrate it four times, right?
@@TheMultiLibra That is correct.
Legend
Great video. Curious as to why this didn't cause pancaking. Was it just the top floor that had issues?
Correct, the top floor had more degradation than below, due to being exposed the most. Also, only a few column caps failed, and the rest of the slab probably slowed down the falling pieces.
@@erikoui interesting. So is this a waterproofing issue? If the top floor was adequately sealed it would have been fine?
@@VonBugle Yes, this is what the owners should have done during maintenance, before the damage was so deep as to need extra support
French audience here. Not bad on your pronunciation of "Antoine Parent" ;-). Interesting topic, not very often encountered online.
I have a bit of a hard time understanding your accent, so I'd appreciate it if you could add closed captions and make sure they don't cover up visuals in the video since the automatic CC _does_ cover some visuals
What a crazy thing to ask.
My volume is as high as it will go and I can barely hear you.
Why is the man's sweater smoking? What does the smoking sweater symbolize? What book is the man reading? Is it symbolic?
Hi Brenda, it's just stock footage, no symbolisms were intended. The smoke comes from an incense stick close to the camera. Hope that clears up your questions :)
@@erikoui Thank you!
Easy to follow for a layman. Thank you for producing and posting this video.
Thanks for a great explanation. Posted 12 days before Champlain Towers, the timing is uncanny. I have included an end screen link in my video for viewers to understand punch "thru" better.
My family parked there when I was a kid.
Clickbait
Interesting video.
Great video!! You definitely got a sub from me!
Very relevant to the Surfside Champlain Tower collapse and unfortunately this time more than 100 were killed.
yeah, science! :D
Not looking 3d! Try better next time. Good luck 👍
Hey thanks for the help! One question....what is the constant 'Q' representing at the end of the formulation? It's referring to a value of heat transfer....but where? Cheers.
@@erikoui Excellent, thanks.
Noice
lol
great
I'm just saying his shading sucked which made it not look 3d..
Moi aussi je peux dessiner ça
that was good
Great hands.
Text is very difficult to read and that awful "music," is distracting.
draw U 3D! :) Can u do that?