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: [email protected] _______________________________________________ Mailing list: https://launchpad.net/~yade-dev Post to : [email protected] Unsubscribe : https://launchpad.net/~yade-dev More help : https://help.launchpad.net/ListHelp

