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Re: [Question #680397]: Kn and Ks value for Hertz-Mindilin model

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From: Robert Caulk <question680397@xxxxxxxxxxxxxxxxxxxxx>
Date: Tue, 23 Apr 2019 08:57:36 -0000
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Question #680397 on Yade changed:
https://answers.launchpad.net/yade/+question/680397

    Status: Open => Answered

Robert Caulk proposed the following answer:
Nope, I believe you need to make your own material class in C++.
FrictMat uses the values Young and Poisson in collaboration with
interacting particle radii to estimate Kn and Ks [1]. There are a couple
benefits to particle size based stiffnesses, one of which is the scale
independence of macroscopic behaviors IINM, the other being the radii
distribution based stiffness heterogeneity distribution.

[1]https://yade-
dev.gitlab.io/-/trunk/-/jobs/200298968/artifacts/install/share/doc/yade-
ci/html/formulation.html#stiffnesses

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