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[Jan Stránský <question295301@xxxxxxxxxxxxxxxxxxxxx>]

Question #295301 on Yade changed:
https://answers.launchpad.net/yade/+question/295301

Jan Stránský proposed the following answer:
>
> displacement=2*max(negIds.size(),posIds.size())*dAX;


I don't like that the work depends on number of particles, it should not..
Jan


2016-06-16 18:37 GMT+02:00 Yor1 <question295301@xxxxxxxxxxxxxxxxxxxxx>:

> Question #295301 on Yade changed:
> https://answers.launchpad.net/yade/+question/295301
>
> Yor1 posted a new comment:
> Hi Jan,
>
> I calculate the displacement and the external work with these lines:
>
> if(asymmetry==0){
> dAX*=.5;displacement=2*max(negIds.size(),posIds.size())*dAX;}
> externalWork += displacement*(sumPosForces+sumNegForces)/2;
>
>
> The eslastic energy and the external work are equal in the pre-pic stage
> and that is reasonable for me.
> Now i have to modify the calculation of the damping energy. In fact with
> NewtonIntegrator, the damped energy is calculated in all the particles. But
> in my case, i have to calculate the damping energy in the particles that
> don't belong to posIds and negIds.
>
> Best regards
> Jabrane
>
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