MSc ADAMS post-processor oscillations

[anon05302023]

Hey guys,
I am simulating a dynamic movement of a robot and I want to record the normal forces between the wheels and the ground but when I enter the post-processor of ADAMS I am encountering very high oscillations. I expect oscillations but that large as shown in the attached image. In addition, I did not encounter this problem when conducting other simulations.
Any idea why and how to fix that?
PS: I am using MSc ADAMS 2020.
Thanks in advance.

 

[GregLocock]

The wheel is bouncing off the ground. Try adding a damper to whatever the controlling (ie softest) compliance is. Also you might try reducing the step size, some tire models need 500 Hz or so.

You appear to have no contact at t=0, it would be wise to allow your robot to settle on the ground before performing any maneuvers.

Cheers

Greg Locock


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