New question #239900 on Yade: https://answers.launchpad.net/yade/+question/239900
Hi all, I have a question about the formulation of the equivalent damping in ViscElphys. For now, it is made such as : cn = ((1/cn1) + (1/cn2))^(-1) which is equivalent to cn = cn1cn2/(cn1+cn2) However, in the case where cn2 = 0 for example, the formulation in the code is not equivalent to the expression above. In the code, it is written that in case of cn2 = 0, 1/cn2 = 0, which gives : cn = ((1/cn1) + 0)^(-1) This is not equivalent to the formulation cn = cn1cn2/(cn1+cn2), because then cn would be 0. (The problem is the same if cn1 = 0) It seems to me that the formulation of the code is false : if one damping parameter of the contact is zero, then as the two dashpot are considered in series, the equivalent damping should be zero. However I am not completely sure it is that simple, so I would like to have your opinion on that. I hope my question is clear. Thanks Raphael -- You received this question notification because you are a member of yade-users, which is an answer contact for Yade. _______________________________________________ Mailing list: https://launchpad.net/~yade-users Post to : [email protected] Unsubscribe : https://launchpad.net/~yade-users More help : https://help.launchpad.net/ListHelp
