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Re: [Question #695457]: Dissipation power during contact with linear spring dashpot system


Question #695457 on Yade changed:

    Status: Open => Answered

Jérôme Duriez proposed the following answer:

I did not look so closely to your code in your text but, for what concerns the line at [*] the "(1 / phys->ks) * (trialForce - shearForce)" term gives the plastic/irreversible component of the increment in shear displacement.
(Not the total one, in an elasto-plastic wording)

It is then just fair to multiply it with current force to get a purely dissipated work.
(and, in case that was your question, there is no need to speak about dashpot  ;-) )

[*] https://gitlab.com/yade-dev/trunk/-/blob/7ab9457c6e69c6e381b3e58ed39665ece60baf81/pkg/dem/ElasticContactLaw.cpp#L91

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