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[Bruno Chareyre <question658491@xxxxxxxxxxxxxxxxxxxxx>]

Question #658491 on Yade changed:
https://answers.launchpad.net/yade/+question/658491

Bruno Chareyre proposed the following answer:
Hi,
Contact stiffness must be scaled proportionally to material stiffness.
I would add that the python loop on interactions may take too much time if it is applied very frequently. In this case it is not very difficult to turn it into a c++ loop. It is done for instance in setContactFriction() [1].
You can check the source code.
Bruno

[1] https://yade-
dem.org/doc/yade.utils.html?highlight=setcontact#yade._utils.setContactFriction

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