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[wangxiaoliang <question210907@xxxxxxxxxxxxxxxxxxxxx>]

New question #210907 on Yade:
https://answers.launchpad.net/yade/+question/210907

In real triaxial compression of granular sand, relative density is usually a key parameter to control the initial state of the sample.

I want to simulate the triaxial compression using yade.  topic here is all about the sample generation.

I use radius-expansion method with different inter-particle friction angle to generate loose or dense sample, friction angle 0 results the densest sample, and friction of maxmimum equals to that used later in deviatoric loading results loosest one as proposed by Chareyre etc. I want to relate the relative density with friction angle, finally I do that. I calibrate parameters using a contact model considering rolling resistance, but if fails for the rolling resistance.

So I guess that the problem is wrong, how to relate my numerical sample with real granular soil using the radius-expansion method?

and anybody has advanced method to generate numerical sample to model real granular sand?

thanks

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