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Re: [Question #690066]: Using O.forces along normal and tangential directions at contact

To: yade-users@xxxxxxxxxxxxxxxxxxx
From: Rioual <question690066@xxxxxxxxxxxxxxxxxxxxx>
Date: Tue, 21 Apr 2020 16:03:40 -0000
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Question #690066 on Yade changed:
https://answers.launchpad.net/yade/+question/690066

    Status: Needs information => Open

Rioual gave more information on the question:
Hello Jan,

To be more precise:

F_n = f(alfa) * normal_strain_rate + g(alfa)

F_t = h(alfa) * tangential_strain_rate

alfa is a dynamic variable which varies at each time step according to an evolution differential equation
 that involves the geometry of contact and normal strain rate...etc 
(d(alfa)/dt = function(alfa, normal_strain_rate, geometrical parameters , physical parameters)....

....So that I want to use O.forces to implement that in an incremental
way !!

When i say "relative velocities of the particles at contact", I just
said "at contact" because of potential spin on the particles...


All the best!

Vincent

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