Question #269739 on Yade changed: https://answers.launchpad.net/yade/+question/269739
Chareyre posted a new comment: Unfortunately this is not really helpful in general. Having boundary-sphere more stiff than sphere-sphere can only increase heterogeneity near the boundaries, hence maximizing boundary effects that we usually want to avoid. It is interesting as an option, not better in general. A proper way to give the option without changing the default would be great. Bruno On 4 August 2015 at 17:46, Bettina Suhr < [email protected]> wrote: > Question #269739 on Yade changed: > https://answers.launchpad.net/yade/+question/269739 > > Status: Answered => Solved > > Bettina Suhr confirmed that the question is solved: > Dear Bruno, > > thank you for you help. You are right, starting from the analytical > solution for the contact of two spheres, > the analytical solution for sphere-wall contact is obtained when one > radius goes to infinity. > What I found in the Yade source code is: > > sphere-facet (Ig2_Facet_Sphere_ScGeom): > scm->radius1 = 2*sphereRadius; > scm->radius2 = sphereRadius; > > sphere-wall contact (Ig2_Wall_Sphere_ScGeom): > ws->radius1=ws->radius2=radius; // do the same as for facet-sphere: wall's > "radius" is the same as the sphere's radius > > I changed in both function the radius of the wall to be big (1e8*radius > of the sphere). > > After eliminating another error in my script (my wall had the same > material parameters as the sphere, where the wall was supposed to be rigid), > now I obtain the correct result for this test case. > > Is the choice of the radius of a facet/wall meaningful for other contact > laws? Or should it be changed? > > Thanks again, > Bettina > > -- > 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 > > -- 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
