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[vadim <question171223@xxxxxxxxxxxxxxxxxxxxx>]

Question #171223 on Yade changed:
https://answers.launchpad.net/yade/+question/171223

vadim posted a new comment:
Thank you, Chareyre! It helped

But the behavior is still strange for me. I remade model a little bit:
there is a moving table and just one sphere. The sphere falls and hits
the table at step 362 150. Interaction 'lasts' until 362 950. I was
going to find out how speed of the sphere is calculated...

------------------------------------------------------------------------------
Yade [167]: O.run(362150)
Yade [168]: pvel()

sphere.vel = Vector3(0,0,-1.6687395853455125)
table.vel = Vector3(0,0,0.80683491142746167)

Yade [169]: O.run(362950-362150)
Yade [170]: pvel()

sphere.vel = Vector3(0,0,3.1912989954315774)
table.vel = Vector3(0,0,0.79939792265750198)
------------------------------------------------------------------------------

My question is: if speed of the sphere before interaction is 1.67 and
speed of the table is 0.81. And 1.67+0.81 = 2.48. So how can speed of
the sphere be 3.19 after interaction? It should be less then 2.48
because of loss but it's greater! Probably I don't understand something

Vadim

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