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["Sergei D." <dorofeenko@xxxxxxxxx>]

Many thanks to all!
Seems, behaviour is correct. Sorry for false alarm.
The sphere twist and roll without shear.
But if no twisting and rolling friction then no dissipation...

>It should give something similar with CundallStrack, but it doesn't 
unfortunately (script 2 attached).
Bruno, script2 give similar if set damping>0, no?

--

Best regards,

Sergei Dorofeenko,
Cand. Phys.-Mat. Sci.

Institute of Problems of Chemical Physics,
Chernogolovka, Moscow region, Russia.

e-mail: dorofeenko@xxxxxxxxx