Question #406523 on Yade changed: https://answers.launchpad.net/yade/+question/406523
Status: Open => Answered Bruno Chareyre proposed the following answer: I did not mean that a cylinder was "made of" spheres, a cylinder IS a sphere. Lets define a sphere as something which has position and radius. A cylinder (gridConnexion) has position + radius + length, hence it is a sphere according to the above definition. Programatically at least it is really the case: class GridConnection: public Sphere{ ...} It is also true for the gridNodes, they are spheres as well for the same reason. So if no functor is found to handle interactions sphere+connexion, node- node, etc. then the dispatcher is looking for a possible - more generic - sphere+sphere functor. That's what happens in the script. Conclusion: there is (should be) no problem for sphere-cylinder interactions because they are actually sphere-sphere interactions. I really don't know why Newton-Raphson is not converging for the viscous node-node interaction (I just checked, the mass are not null), but I can tell it is not a problem of functor availability for specific shapes. Actually you couldn't care less: you want rigid cylinders so you don't care about the node-node behaviour. Just fix all degrees of freedom and it should be fine. Bruno -- You received this question notification because your team yade-users is an answer contact for Yade. _______________________________________________ Mailing list: https://launchpad.net/~yade-users Post to : yade-users@lists.launchpad.net Unsubscribe : https://launchpad.net/~yade-users More help : https://help.launchpad.net/ListHelp