Stay in the bucket!

[blinnlambert]

I am currently working on a project where I need a backhoe to dump lots of debris into a pit using the Dynamica plugin. The difficult part of the simulation is that I need the loader to carry the debris about 20 yards over to the pit. I have a stand-in passive collision geo for the loader and right now I am just testing with spheres as the active rigid bodies.

My problem is this: the active bodies settle into the loader perfectly but when the backhoe starts moving forward, they invariably fall through the back of the loader. I have tried adding edge loops to the passive geometry, tweaking every asset from Mass to gravity to collision margin and nothing seems to solve this interpenetration. If you know of a workaround for carrying rigid bodies please let me know.

thanks

[blinnlambert]

So I re-animated the backhoe moving reeeeeally slowly and the rigid bodies stay in the loader semi-okay. I am beginning to realize that dynamica is meant more for simulating shatters and shrapnel effects rather than direct manipulation of the rigid bodies (i.e. sweeping/moving piles of dirt).

[Erwin Coumans]

Can you increase the solver substeps to 100 (or 1000) and see if that improves the issue?

Also, I just created a new physics frame rate option, can you try updating and increase that value from 200 to 1000 or 10000?

Here is a new BETA2 of Dynamica build for Maya 2011, 64bit Windows:
http://code.google.com/p/dynamica/downl ... _beta2.exe

substep_and_physicsrate.png

Thanks,
Erwin

[winspear]

How about adding some damping to the rigid body particles that are being carried ?