New question #237624 on Yade: https://answers.launchpad.net/yade/+question/237624
Hi there, is somebody dealing with inelastic contacts using Yade? I found pkg/dem/NormalInelasticityLaw.cpp which is quite good. But it makes use of the Cundall & Strack formulation whereas I need HertzMindlin. Some infos about the problem I try to solve: A steel ball is dropped from a given height onto a horizontal plate which is made of steel, too. I simulated this scenario using Cundall and Strack and observed way higher contact forces than in my experiments. I.e. about 30N (experiment) to 250N (C&S simulation) for maximum force of the first contact. Changing to contact law of Hertz Mindlin which seems appropriate because Cundall & Stracks law was originally tested on disks rather then spheres, gives simulated maximum contact forces of 40N. A indentation test on the steel ball and the steel plate showed that there is a slight difference in the hardness of the two materials. So the softer one (the plate) can be plastically deformed by the harder steel ball. I think that this could explain the deviation of contact forces. That's the reason I am looking for a Hertz Mindlin based constitutive law for elasto-plastic contacts. Thanks for your help, Alex -- 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
