Welcome to the EngineeringSkills (formerly DegreeTutors) channel. My name is Seán and I’m a Chartered Engineer and founder of EngineeringSkills.com. I post civil and structural engineering tutorials to try and make life a little easier for engineers and engineering students.
Can blender be used for membrane form finding and patterning process? Few years ago I used a specialist piece of software that did the job fine, but it was so expensive!
Form finding, yes, patterning I'm note sure. The capability is there but probably not out of the box. That could make for a great custom add on though.
Thank you for creating such an exceptional and insightful video. The content was truly world-class, and your clear explanations made complex concepts easy to understand. I appreciate the effort and expertise you put into making it. Keep up the outstanding work!
@@khp695 Yes, I did. Previously my Openseespy version was not updated. Now I installed the laterst version of Openseespy (3.7.-something). It works on python 3.11. The same frame example works perfectly from the top to the bottom
Last night I was checking out a tutorial with openseespy and gmesh in python, then I thought instead of gmesh maybe try blender. And this morning your video popped up.😊 Thanks for the great content.
Great...happy to help. Yeap, Blender is currently very underated as a tool for engineering modelling. You might find this interesting also... www.engineeringskills.com/structureworks 👍
I want to register my account , but it prompts me to prove that I am not a robot. I did not see the pop-up proof method of clicking on images. How should I proceed?
I'm very interested in this. I also worked a little bit on making something similar myself around 2 years ago for my 3D truss engine written entirely in python. Hoping you can also open-source this project so that people can also can also contribute to the code base.
Love to see updates regarding this. Good to see you took a similar approach to using vertex groups. I have to admit this method is a lot more user friendly than what I suggested previously. Please keep working on this and keep up the good work, I Think this could be incredibly useful.
Sounds like a pretty complex analysis with plenty of non-linear behaviour...nice. So, yes, I believe you can accomplish such an analysis with OpenSees. The challenge will be validating your results - if you're implementing a novel or complex analysis in OpenSees, the scope for making errors with how you implement the libraries methods is quite big! My advise is to start by solving a much simpler problem (perhaps even one you have a known solution for) and then build up the complexity incrementally from there. Hope that helps - good luck!!
This is the most thorough explanation of Mohr's circle. I was analyzing a mechanical shaft when I first learned this and thought the circle was representative of the cross section of the shaft.
Si consideramos la idea general y(x)=Acos(kx)+Bsen(kx)+C+D y en el extremo libre ocupamos condiciknes de fronteea de V(L)=0 y M(L)=0 la carga critica cambia, resolviendo con el determinante
I really wish it had stated somewhere that you would need a membership to exceed a certain number of members and supports. I just spent hours typing values into Excel, only to find out I was never going to be able to simulate it anyway. I am extremely frustrate
Sorry about that John. If you follow this tutorial, you'll be able to pretty quickly build a truss analysis script that will allow your to model any size structure you like... www.engineeringskills.com/posts/introduction-to-opensees-and-openseespy You can also download the finished project once you register a free account. Seán
Great video and well explained Can you do the structure of any plane, for example if I have an organic surface made in blender how can I do the structure for it?
Hey - thanks. Well it's really up to you how you want to model the structure to match your surface. Some knowledge of structures would be helpful for this.
when setting up the x y coordinates for your node does it matter where your origin point is or is it more important to be consistent with your origin point?
Hey, it doesn't really matter where the origin point is, the only thing that matters is the nodal positions relative to one another. The model can be positioned with one of of its nodes at [0,0] or the whole model can be offset by any distance from [0,0]. I won't influence the analysis.
Hi, yes we work through applying point loads to a catenary…if you take a look at the course info page on EngineeringSkills.com…you’ll get a much better idea of what we cover 👍
I never really understood stress analysis in mechanics of materials, but I've had to review it for machine design course and I must say that these set of videos are excellent. Thank you.
Amazing explanation! Can we analyze a tetrahedron element with OpenSees? I was just wondering, is OpenSees capable of handling analysis like other professional software? Let's say ATENA or Abaqus, for example.
The big difference between OpenSees and more commercial software is it's lack of a GUI - I wouldn't say it's a direct competitor to something like Abaqus. But if you like scripting your own analyses anyway, it's super helpful.
@@DrSeanCarroll I currently works on my master's tesis and I want to use opensees for my models. I need abaqus-like features from opensees. Can we use Salome or GMSH as a mesh generator, opensees as a solver and Paraview as post processing to visualize the result? It would be amazing if this works since all software that I mentioned is an open source software.
Hello! Could you please suggest to me how would I have to proceed if instead of a simply supported column at the top, the boundary condition changes to a spring on the horizontal direction? Thank you!
Hello, for 3d filled objects such as concrete, wood, etc..., would the direct stiffness method still be approximately valid with an uniform discretization of the beams? Thank you, good video btw.
Hey - the DSM is material agnostic in that it will give the force distribution for a structure regardless of the Young's modulus used in the calculation. The value of Young's modulus will obviously influence the magnitude of the deflections though.
I am trying to do analyze a cantilever truss where one node is fixed in X,Y, and Z and a node on the other end has a force acting on it in X,Y, and Z. It is saying "looks like not enough restraints provided", why is this the case?
And if i fix more nodes on the end "face", then it says "there was a problem calculating displacements". Really only one node should be fixed for the scenario i am modeling. It is basically a cantilever truss with one node fixed to a ball shaft and the other end has one node with a rope attached to it pulling in X,Y,Z away from the truss.
Difficult to say without investigating the model in detail I'm afraid. You can see how the solver was build here... www.degreetutors.com/3d-truss-analysis-using-the-direct-stiffness-method/ or read a tutorial article about it here... www.degreetutors.com/direct-stiffness-method/ A number of additional 'error checking' constraints were implemented to build this into a browser-based tool. It could be that some of these checks are overzealous in restricting your model or it could be a problem with the model definition. Like I said, difficult to dig deeper in the RU-vid comments 🤔
Hi Dr. Carroll It's always exciting to hear from you. I'm really excited about the upcoming changes you've highlighted. Also looking forward to the planned courses, they've certainly peaked my interest, so I'll be keeping an eye out for those. Feels like I've struck gold with DegreeTutors/Engineering Skills. Thanks for the high-quality courses.
Hi Sean, Loving the look of the new site. Relatively new member here and just a quick suggestion that might be useful for other new members: a site navigation/use tutorial video in the new version of the website will be very beneficial. I personally struggled navigating DegreeTutor when i first signed up. Thanks,
