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UniaxialStrainer with friction

Asked by Ricardo Pieralisi

Helo all,

I am using the CPModel (with some modifications) to simulate the compression and tension tests, so I am using UnixialStrainer.
As you all known in the UniaxialStrainer you can block the displacements and/or the rotations of the boundaries particles. But what I need was to simulate the interaction particles boundaries with the load plates with friction (concrete-steel) not just block the DoFs.

I tried to introduce two steel plates (bottom and top of the concrete sample) without UnixialStrainer, but the results showed that the concrete and the plates presented a cohesive contact.

Any idea how may I introduce the friction?

Thanks,
Ricardo.

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Jan Stránský (honzik) said : 		#1

Hi Ricardo,

what spahe do you use for plates? Walls, facets, ...?

what material do you use for the plates? again CpmMat? if so and you use
Bo1_....aabbEnlargeFactor and Ig2_....interactionDetectionFactor, than some
cohesive bonds are created between spheres and plates. The possible
solutions are:
1) delete "manually" the interactions created between plate and spheres
after first step
2) use different material (FrictMat) for plates
and Ip2_FrictMat_CpmMat_FrictPhys in Ip functors in addition

cheers
Jan

2013/11/6 Ricardo Pieralisi <email address hidden>

> New question #238759 on Yade:
> https://answers.launchpad.net/yade/+question/238759
>
> Helo all,
>
> I am using the CPModel (with some modifications) to simulate the
> compression and tension tests, so I am using UnixialStrainer.
> As you all known in the UniaxialStrainer you can block the displacements
> and/or the rotations of the boundaries particles. But what I need was to
> simulate the interaction particles boundaries with the load plates with
> friction (concrete-steel) not just block the DoFs.
>
> I tried to introduce two steel plates (bottom and top of the concrete
> sample) without UnixialStrainer, but the results showed that the concrete
> and the plates presented a cohesive contact.
>
> Any idea how may I introduce the friction?
>
> Thanks,
> Ricardo.
>
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Revision history for this message
Ricardo Pieralisi (ricpieralisi) said : 		#2

Hi Jan,

Thank you!
I missed about using Ip2_FrictMat_CpmMat_FrictPhys, my fault.