### Re: [Yade-users] [Question #682859]: how to calculate anisotropy of contact normal vector

Question #682859 on Yade changed: https://answers.launchpad.net/yade/+question/682859 Status: Open => Answered William Chevremont proposed the following answer: Hi, PDFEngine do that for you. It compute the average of quantities like stress, distance, and probability of interaction for each

### Re: [Yade-users] [Question #682859]: how to calculate anisotropy of contact normal vector

Question #682859 on Yade changed: https://answers.launchpad.net/yade/+question/682859 Jan Stránský proposed the following answer: Hello, as (almost) always, a MWE [1] would be useful (e.g. to know what "particle" is - sphere, polyhedra...), expressing on a few artificially created spheres and

### [Yade-users] [Question #682883]: calculate mass content of a group of particles through something like label

New question #682883 on Yade: https://answers.launchpad.net/yade/+question/682883 Hi, I'd like to calculate the mass content of a group of spheres, as far as I know, we can obtain a mass of one sphere by: O.bodies[id].state.mass I'd like to ask that if we can obtain the mass of a group of

### Re: [Yade-users] [Question #682883]: calculate mass content of a group of particles through something like label

Question #682883 on Yade changed: https://answers.launchpad.net/yade/+question/682883 Status: Open => Answered gaoxuesong proposed the following answer: Hi, The possible way i think is that using different lists to save the sphere's id of different groups and do loop in each list. ##

### [Yade-users] [Question #682898]: Which model is used to calculate the cohesive force?

New question #682898 on Yade: https://answers.launchpad.net/yade/+question/682898 Hi. I have looked through the document for Law2_ScGeom6D_CohFrictPhys_CohesionMoment. It gives the formula to calculate the contact force. Fn=min(kn∗(un−upn),an). an is the cohesive force. But is there any

### Re: [Yade-users] [Question #682898]: Which model is used to calculate the cohesive force?

Question #682898 on Yade changed: https://answers.launchpad.net/yade/+question/682898 gaoxuesong posted a new comment: I have checked the definition of CohFrictMat. So the normalCohesion and shearCohesion is the an and as appeared in the documentation of