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[Jérôme Duriez <question363618@xxxxxxxxxxxxxxxxxxxxx>]

Question #363618 on Yade changed:
https://answers.launchpad.net/yade/+question/363618

    Status: Open => Answered

Jérôme Duriez proposed the following answer:
Hi,

I guess you're referring to the example of the doc at https://yade-
dem.org/doc/tutorial-examples.html (this was not obvious for me at
first)

Maybe you thought the particle velocity got small because the motion
depicted in the GUI is much slower with your new material line. However,
this is highly misleading...

What you see in the GUI is displacements: vitesse *time. And, with your
new line, the time step has decreased a lot: from 2.5e-7 from 6.45e-9.

However, the velocity itself is probably the same, you may check it
asking for state.vel (this is the best measure of velocity !)

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