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[Chareyre <question686024@xxxxxxxxxxxxxxxxxxxxx>]

Question #686024 on Yade changed:
https://answers.launchpad.net/yade/+question/686024

    Status: Open => Answered

Chareyre proposed the following answer:
Can you reproduce the problem by prescribing motion to all bodies, like
vel=something*pos? Else it's unclear if the problem is in post processing
or in the simulation in itself.
Bruno

Le ven. 22 nov. 2019 00:09, Alireza Sadeghi <
question686024@xxxxxxxxxxxxxxxxxxxxx> a écrit :

> Question #686024 on Yade changed:
> https://answers.launchpad.net/yade/+question/686024
>
>     Status: Answered => Open
>
> Alireza Sadeghi is still having a problem:
> Hello Bruno,
>
> When I increase the number of particles, as I said in the previeus
> massage, the strain tensor is not correct. In the code, I applied
> compaction strian rate (negetive) in z direction in the deviatoric part.
> Therefore, It should have negetive strain in the z direction. But now I
> have:
>
> Triangulated Grains : 12491
> sym_grad_u_total_g (wrong averaged strain):
> 0.0271423 -0.00121828 -0.00169358
> -0.00121828 -0.00108962 -5.17863e-05
> -0.00169358 -5.17863e-05 0.00136745
>
> Total volume = 0.018195, grad_u =
> 0.0271423 6.67822e-06 -4.62223e-06
> -0.00244324 -0.00108962 0.000223831
> -0.00338253 -0.000327403 0.00136745
>
> sym_grad_u (true average strain):
> 0.0271423 -0.00121828 -0.00169358
> -0.00121828 -0.00108962 -5.17863e-05
> -0.00169358 -5.17863e-05 0.00136745
>
> Macro strain :
> 0 0 0
> 0 0 0
> 0 0 0
>
> In addition, When I opened the micro strain in Paraview, there is no
> specific shape. However, when I open view in the controller, the shape of
> sample is correct. I don't know what should I do. All the conditions are
> the same, just I increased the number of particles.
> Thank you very much.
>
> best Regards,
>
> Alireza
>
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