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Contact Model

Submitted by qilu on Mon, 10/19/2009 - 14:36

 

Hi, 

It seems that the contact model in LifeMOD is more like rigid body contact. Does it use the contact function in ADAMS? Anyway, that model works good for walking case. but not for other cases, like jumping.

I implemented a simulation with a set of jumping mocap data. The human model was just like a bouncing ball when his feet contact the ground. Rather than stay on earth, he bounced back into air after touching the ground.

I would like to modify the contact model, such that it has some elasticity, not a fully rigid body. How may I realize that?

Thank you.

Qi

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Contact Model

Submitted by sbergeon on Thu, 10/22/2009 - 13:17.

Qi, if you use the Ellipsoid-Plane option a formula based function is created that is designed to be fast, but does not include a coulomb firctino model.  If in stead you use the Solid-Solid option then ADAMS Contact forces including coulomb friction get generated.  You should be able to get that to work for the effect you are looking for.

Thank you. I will try and

Submitted by qilu on Thu, 10/22/2009 - 15:17.

Thank you. I will try and see.