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Re: [Question #171223]: Strange behavior of spheres colliding with a moving facet

To: yade-users@xxxxxxxxxxxxxxxxxxx
From: Chareyre <question171223@xxxxxxxxxxxxxxxxxxxxx>
Date: Tue, 27 Sep 2011 13:25:45 -0000
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Question #171223 on Yade changed:
https://answers.launchpad.net/yade/+question/171223

Chareyre proposed the following answer:
Yes, clearly, if dt is too large the impact will not be described correctly and it can create energy. This is a feature of explicit DEM, not a bug. You have to consider incident velocities when defining dt, independently of the numerical stability condition.
However, you will get the 3.19 velocity even with very small timesteps I think (and it is correct, do you agree?).

Thanks for testing the branch! :)

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