Hello, thank you for your answer, but I avoid that all this is not yet perfectly clear for me :
sega a écrit : >>> I have a question about the meaning of velocities of >>> "non dynamic" bodies. Is it computed even if it is not set by an Engine, >>> and if yes how ? >>> > > No, as seems to me. The positions, velocities and so of "non dynamic" > bodies is set only by an kinematic Engine. > > >> Considering moreover the fact that in the contact laws that's the >> velocities of the bodies which are used to compute the relative >> displacements, how does this (well) work ? >> > > With the linear velocities here no problem. Why really no problem ? I wonder in fact about the case of an interaction between a non dynamic body (whose velocity was never affected by an Engine) and a dynamic one, example : a sphere and a wall in the TriaxialTest. If the velocity of the wall is indeed zero (as it was defined so in the createBox of the PreProcessor of TriaxialTest, and never changed after), _whereas its position changes_, the computations of relative displacements between this wall and the sphere will be wrong, not ? Thanks Jerome _______________________________________________ Yade-users mailing list [email protected] https://lists.berlios.de/mailman/listinfo/yade-users
