Question #695058 on Yade changed: https://answers.launchpad.net/yade/+question/695058
Status: Open => Answered Bruno Chareyre proposed the following answer: You are welcome, nice to hear that someone is using it. :) > In other words, what do I need to do in order to set the mass of a body Set the mass of its nodes. That's all. You could set mass to zero by yourself for other objects (or set density =0 and let preprocessing compute the null mass). It should give same results. So in fact you don't even have to make it zero, you can just ignore it. > PFacets seem to never receive a mass, but also the mass of the nodes does not increase Indeed, I don't think there is a helper function equivalent to "cylinderConnection()" for PFacet. To be clear, cylinderConnection() would be better called "buildBeam()". A Pfacet equivalent would be "buildShell()" and it would assign thirds of facet mass to the nodes. Currently the only option is to do that in your script. If you make it in a python function we can include it to source alongside the cylinderConnection(). > - What’s the difference between grid- and cylinder-connections. I would say they are two alias for the same thing. Am I confused? have seen one or the other in different scripts? >- Why is it important to set a cohesive material for the nodes with super high cohesive values? Nodes material is used to deduce the properties of the interactions between beam nodes (stiffness and strength), if cohesion is small you can get get plastic deformation of the beam (in bending, shear, traction). Not necessarily wrong, but if you want a simple linear elastic response you set a super high cohesion. Again, this is just preprocessing. You can always go loop on interactions by yourself and change kn, ks, etc. regardless of which material is assigned. > How is the bending/mechanical behaviour in a node that connects 2 cylinders computed? It isn't. Bending is defined for interactions, based on the differential rotation of two nodes. It is not defined "per node". Same for the connection between two facets. > Can you recommend or provide resources for that topic? Not really. You could check Effeindzourou PhD dissertation but I guess it's relatively close to the papers. There is an old 2D version of the same thing described in [3] but I don't think it helps more if you already went through the 3D version. Bruno [3] https://www.yade- dem.org/w/images/1/1b/Chareyre%26Villard2005_licensed.pdf -- 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