Law2_ScGeom6D_CohFrictPhys_CohesionMoment

Asked by ytang on 2020-10-26

Hi All,

Recently, I'm using this constitutive model (Law2_ScGeom6D_CohFrictPhys_CohesionMoment ) to simulate the cone penetration test[1].
when I calculate the inertial number [2] of the sample, I found that the sample belongs to the dense flow regime, which means the simulation is dynamic.
As we all know that the damping is an important parameter in dynamic simulation. This damping [3] (numerical damping) is not suitable for dynamic simulation. We need s velocity-based damping (it's called viscous damping).
However, I didn't find any parameters related to the viscous damping.
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If I want to use this constitutive model to simulate the dynamic situation, what should I do? (because I already use this model to calibrate the static triaxial tests.)
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best,
Yong

references: [1] https://en.wikipedia.org/wiki/Cone_penetration_test
[2] https://en.wikipedia.org/wiki/Inertial_number
[3] https://yade-dem.org/doc/yade.wrapper.html?highlight=newtonintegrator#yade.wrapper.NewtonIntegrator.damping

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ytang
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2020-10-26
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2020-10-26
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This question was reopened

Jan Stránský (honzik) said : #1

Well, one option, a difficult, long-term and with unsure result, is to implement viscous damping to the C++ source code :-)
cheers
Jan

ytang (ytang116) said : #2

Hi Jan,

thanks!

best,
Yong

Hi,
I would kindly ask you to fix your username for my personal brain struggles to distinguish user "onyourself" from user "nobody".
Regards
Bruno