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[xuelong14 <question392660@xxxxxxxxxxxxxxxxxxxxx>]

Question #392660 on Yade changed:
https://answers.launchpad.net/yade/+question/392660

    Status: Answered => Open

xuelong14 is still having a problem:
Thank you very much for your answer !
Friction really dissipate the main part of the energy in the tangential direction, but wouldn't it be better if beta_s  is added to this model, after all the energy may dissipate in the tangential direction even if the friction doesn't happen ? And in the model Ip2_FrictMat_FrictMat_MindlinPhys, the beta_s can be adjusted.
It is really really hard for me to add the tangential viscous damping ratio to YADE.
So can you add beta_s to the model ? Can we see the new model in the next released YADE ?
Thank you very much !
Long Xue 





At 2016-09-12 20:47:30, "Klaus Thoeni" <question392660@xxxxxxxxxxxxxxxxxxxxx> wrote:
>Your question #392660 on Yade changed:
>https://answers.launchpad.net/yade/+question/392660
>
>    Status: Open => Answered
>
>Klaus Thoeni proposed the following answer:
>Hi,
>
>in most of the cases I know only normal viscous damping is used. This
>makes sense since friction is dissipating energy in tangential direction
>but additional tangential viscous damping could be used to dissipate
>more energy. Isn't there a specific justification in the papers you are
>referring to?
>
>Klaus
>
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