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Re: [Question #657858]: how the local residual friction angle is determined

To: yade-users@xxxxxxxxxxxxxxxxxxx
From: Luc Scholtès <question657858@xxxxxxxxxxxxxxxxxxxxx>
Date: Mon, 11 Sep 2017 16:44:42 -0000
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Question #657858 on Yade changed:
https://answers.launchpad.net/yade/+question/657858

Luc Scholtès proposed the following answer:
Hello Jabrane,

As mentioned by Jerome, in the current version of the code, phi_b =
phi_c = phi, so whatever the state of the contact (cohesive or not), phi
is used for the computation of the shear force:

contactPhysics->tanFrictionAngle = std::tan(std::min(phi1,phi2)

with phi1 and phi2 the friction angles defined in the material functor
of your python script.

I have a version of the code where phi_b != phi_c which I may commit in
the coming days.

Do you need it?

Luc

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