Marcocheng Posted September 4, 2019 Share Posted September 4, 2019 Hello guys I'm just doing simple RBD sim and basic glue constraint network relationship. As usual, connect adjacent pieces. When the RBD packed object drop to the ground the object spin around like crazy. Even do some parameter tweak still you can see velocity is non-zero after the object reach the ground and keep shaking after hundreds of frame Here's the file RBD_Simple_Jitter.hip Can anyone tell me what may cause this issue? THanks! Quote Link to comment Share on other sites More sharing options...
Drughi Posted September 4, 2019 Share Posted September 4, 2019 Hi, First of all don't let the pieces intersect with the ground initially. Then there is v and w. W is for rotation. To fix the spinning turn up the rotational friction on the rbd object. Quote Link to comment Share on other sites More sharing options...
Drughi Posted September 4, 2019 Share Posted September 4, 2019 (edited) Also if you want the lowest box not to move - set i@active=0; Edited September 9, 2019 by Drughi Quote Link to comment Share on other sites More sharing options...
Marcocheng Posted September 4, 2019 Author Share Posted September 4, 2019 1 2 hours ago, Drughi said: Hi, First of all don't let the pieces intersect with the ground initially. Then there is v and w. W is for rotation. To fix the spinning turn up the rotational friction on the rbd object. Hi I think the model didn't intersect with the ground initially. The model drops at the beginning. The result seems to be better after increasing the rotational stiffness. In geo spreadsheet, i can still see the V and W jittering (very slightly and non-stop)... The look is okay but not good when you see the data Quote Link to comment Share on other sites More sharing options...
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