Question #693278 on Yade changed: https://answers.launchpad.net/yade/+question/693278
Robert Caulk proposed the following answer: 1. is it possible to construct the parallel bond model by allowing moment transfer in JCFpmPhys? Yes, it is open source code you can modify/add/subtract anything you want. Relevant thread [1]. 2. is it possible to add two interactions ( both jcfpmmat & cohfrictmat)? Do you mean add two laws? Each of these follow a different law, the law decides how the forces are determined, when the bonds break, how the plasticity develops. No, you cannot use two laws on a single interaction. 2. in the source code of JCFpmPhys[1], line 655 and line 656, I can see that 'crossSection(pi*R^2)' take place the' R1*R2/(R1+R2)', why is that? if I was given the modulus of bond (E), how do I compute the jointNormalStiffness(jkn)? is it jkn=E or jkn=E/R? Please, in the future, add the links, don't make us wade through lines of code just to end up *maybe* at the same place you are referencing. It would appear that they changed from the harmonic mean to the cross sectional area to keep the expression size independent. I realize that doesn't provide much extra information, but from a units stand point - it is true. Size independent expressions are always preferable in DEM. The user defined Normal stiffness [2] should be in units of Pa/m to stay consistent with this expression. So I suppose you would use jkn=E/R, to answer that question. Cheers, Robert [1]https://answers.launchpad.net/yade/+question/689058 [2] https://yade-dem.org/doc/yade.wrapper.html#yade.wrapper.JCFpmMat.jointNormalStiffness -- 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 : [email protected] Unsubscribe : https://launchpad.net/~yade-users More help : https://help.launchpad.net/ListHelp
