-HEAVY- Posted February 25, 2016 Share Posted February 25, 2016 Hello Friends, can somebody guide me how to do plastic deformation and metalbending?at the moment i am doing the Car Crash Tutorial from Digital Logic VFX on youtube but its based on the old Cloth Solver and i think the workflow for such an effect has drasticly changed in H14 and 15. so what is the way to do effects like crushing a soda can or doing car crash deformation with the FEM Solver - how does transfering painted attributes work and simulating low res tets and transfer the deformation on a more detailed modell? best regards de heavy Quote Link to comment Share on other sites More sharing options...
Farmfield Posted February 25, 2016 Share Posted February 25, 2016 This will get you in the right direction... https://jurajtomori.wordpress.com/2016/01/16/fem-and-plasticity/ The rest is about resolution and tweaking. 1 Quote Link to comment Share on other sites More sharing options...
Juraj Posted February 26, 2016 Share Posted February 26, 2016 Hi, I played a bit with FEM but I didn't get very good results. But after watching some videos on Vimeo I found probably a better workflow. I recommend watching this video: In comments Eistan explained his workflow - simulate car with cloth solver. Then use one nice frame from resulted simulation and use it as blendshape. You can then also hand sculpt deformations as you like and blend between original and deformed car as you wish. Maybe some CHOPS would help you with some jiggle to create metallish vibrations look I haven't tried this workflow yet but when I get some time I will definitely do. It seems to me to be more flexible and you will have more control above your animation. Juraj Quote Link to comment Share on other sites More sharing options...
-HEAVY- Posted March 1, 2016 Author Share Posted March 1, 2016 (edited) thx for the help Farmfield and Hello Juraj thx for joining in. i tried your code and I like the idea of comparing the volume but i dont got it to work correctly i have the Multiplier set to very small something and most of the time everything is exploding. or the object is shrinking first.... so unexpectied things happen... i put the file here so you may have a look when you have the time. i got much better results by easily painting shapestiffness but ist very hard to get the right values. FEM_test_with_REST_jurajtomori.hipnc Edited March 1, 2016 by -HEAVY- Quote Link to comment Share on other sites More sharing options...
-HEAVY- Posted March 2, 2016 Author Share Posted March 2, 2016 So and here, this is what I did with the painted Cloth i think Cloth is the better way for me at the moment, but i really would like to know how to implement rest update via SOPSolver....as you see i cheat a bit by massivly increasing the dumping after contact - so the deformation doesnt exflate back to the original shape. ... and so it feels a bit like cheating.... FEM_test_CLOTH_painted.hipnc Quote Link to comment Share on other sites More sharing options...
Juraj Posted March 6, 2016 Share Posted March 6, 2016 Hi, I looked again at my project file and now it is shrinking too. I am not sure what is causing it. It set it up in older version of Houdini so something might have changed. Juraj Quote Link to comment Share on other sites More sharing options...
-HEAVY- Posted March 11, 2016 Author Share Posted March 11, 2016 Hey Juraj, thx for taking a look - do you looked at my file too and can tell me if it matches your setup or even has correct setup? Quote Link to comment Share on other sites More sharing options...
Juraj Posted March 11, 2016 Share Posted March 11, 2016 Hi, yeah, it is the same setup. When I use my setup in newest Houdini, object shrinks. When I get some free time I will try to fix it. Juraj Quote Link to comment Share on other sites More sharing options...
ChargingImage Posted March 22, 2016 Share Posted March 22, 2016 Any luck Juraj? I'm trying to make ripping metal effect, but everywhere I look : "old technique, not working in H15". Are there any advanced FEM tutorials? Quote Link to comment Share on other sites More sharing options...
-HEAVY- Posted January 19, 2017 Author Share Posted January 19, 2017 Are there any updates on this? I am planning to try a carcrash next and thought i check the possibilities first. So any updates on plastic deformation, metal bending? Quote Link to comment Share on other sites More sharing options...
Diego A Grimaldi Posted January 19, 2017 Share Posted January 19, 2017 might have more luck with RBD and constraints like thishttps://www.cgcircuit.com/course/applied-houdini---rigids-iii 2 Quote Link to comment Share on other sites More sharing options...
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