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Message #13045
Re: [Question #295810]: CPM contact parameters (stiffness & friction angle)
Question #295810 on Yade changed:
https://answers.launchpad.net/yade/+question/295810
Bruno Chareyre proposed the following answer:
The harmonic average is simply what comes out after cumulating the compliance of two surfaces, as explained here:
https://yade-dem.org/doc/formulation.html#normal-stiffness
It does not mean that every experiment on every possible contact will
give this, but it is at least self-consistent.
Bruno
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