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[Question #247576]: Shear Force calculation code

To: yade-users@xxxxxxxxxxxxxxxxxxx
From: Andy Torres <question247576@xxxxxxxxxxxxxxxxxxxxx>
Date: Thu, 24 Apr 2014 15:16:56 -0000
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New question #247576 on Yade:
https://answers.launchpad.net/yade/+question/247576

Hi to all,
I'm trying to figure out where I'm doing a miss interpretation of the GUI information. 
I can't adjust the shear force given by Yade for a viscoelastic material contact , to the equation given by Pourin [ec (11) in PRE-2001] in wich the shear force is ( I alrready know that the value of Ks and Cs are not the same than in the paper)

Fs=Ks*sum(shear displacement increment during the contact)+ Cs*(shear displacement/dt) 

so my question is: where can i found the calculation of the shear force (for viscoelastic material) in the code (which file) or how should I make the calculation properly with the provided GUI data?
thanks in advance
Andy

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