AntoineSfx Posted December 6, 2017 Share Posted December 6, 2017 (edited) A simple setup with a sphere as FEM solid with its parameters set to rubber has a weird behavior. After touching the ground, the kinetic energy somehow dissipates but it doesn't translate in a deformation of the soild, so I'm wondering where the energy went. I'm assuming it's just not modeled by this tool, so it's not the right tool to do a bouncing ball effect. Is this what the hint on the shelf tool means by not very elastic ? Edited December 6, 2017 by AntoineSfx Quote Link to comment Share on other sites More sharing options...
Guest tar Posted December 6, 2017 Share Posted December 6, 2017 Just add substeps Quote Link to comment Share on other sites More sharing options...
ParticleSkull Posted December 6, 2017 Share Posted December 6, 2017 Hey Antoine, try changing the Integrator Type to ABE2 in the Finite Element Solver not sure if it works on all situations but once it worked perfectly for me Quote Link to comment Share on other sites More sharing options...
AntoineSfx Posted December 7, 2017 Author Share Posted December 7, 2017 11 hours ago, ParticleSkull said: Hey Antoine, try changing the Integrator Type to ABE2 in the Finite Element Solver not sure if it works on all situations but once it worked perfectly for me ok I have this more or less working.. The kinetic energy just seems to disappear too fast, and now the object sometimes explodes after a few frames.. I know that computational geometry is full of nasty edge cases , and that https://www.cs.cmu.edu/~quake/robust.html IEEE 754 is not associative, hence .. problems sometimes. Is there a way to systematically correct those problems when they appear ? Quote Link to comment Share on other sites More sharing options...
ParticleSkull Posted December 7, 2017 Share Posted December 7, 2017 Hard to say, can you publish a preview of how your scene looks like? Quote Link to comment Share on other sites More sharing options...
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