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[Luc Scholtès <question694100@xxxxxxxxxxxxxxxxxxxxx>]

Question #694100 on Yade changed:
https://answers.launchpad.net/yade/+question/694100

    Status: Open => Answered

Luc Scholtès proposed the following answer:
Hello,

How did you define the interparticle properties in your simulation
(interparticle stiffnesses, interparticle friction)?

Did you calibrate the model to make sure that the macroscopic emergent
behavior is the behavior you expect?

My guess is that the emergent/macroscopic friction angle of your DEM
model is exactly half the friction angle of the material you want to
model.

Because of the spherical simplification (and other things), defining an
interparticle friction angle of 40° will not result in a
macroscopic/emergent friction angle of 40°. Generally, the emergent
macroscopic friction angle is smaller than the interparticle friction
angle.

Sorry if you already knew that but I just wanted to be sure before going
any further.

Luc

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