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[jduriez <question245675@xxxxxxxxxxxxxxxxxxxxx>]

Question #245675 on Yade changed:
https://answers.launchpad.net/yade/+question/245675

    Status: Open => Answered

jduriez proposed the following answer:
Hi,

The general method is still to define the properties in CohFrictMat, and
to use appropriate "Ip2" (Ip2_CohFrictMat_CohFrictMat_CohFrictPhys here)

For k_r, CohFrictPhys.kr depends on CohFrictMat.alphaKr and alphaKt,
give a look at the source code [1] to discover the exact relations. For
rolling friction, it depends on CohFrictMat.etaRoll, the source code
will help you to know exactly how.

For k_n and k_t, the relations between (CohFrictPhys.kn ;
CohFrictPhys.ks) and ( CohFrictMat.young ; CohFrictMat.poisson) are the
same than for FrictMat() (see [2]), so nothing new for you.

Jérôme

[1] https://github.com/yade/trunk/blob/master/pkg/dem/Ip2_CohFrictMat_CohFrictMat_CohFrictPhys.cpp
[2] https://www.yade-dem.org/doc/yade.wrapper.html#yade.wrapper.Ip2_CohFrictMat_CohFrictMat_CohFrictPhys

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