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[Bruno Chareyre <question230986@xxxxxxxxxxxxxxxxxxxxx>]

Question #230986 on Yade changed:
https://answers.launchpad.net/yade/+question/230986

Bruno Chareyre posted a new comment:
The whole clump is indeed considered as a unique particle with a total mass and stiffness.
Uncoupled DOFs means that a displacement in the direction x generates a dominant force along x (i.e. the generalized stiffness matrix is assumed diagonal). Be it for a clump or a sphere, this approximation is the same.
It is possible to compute without this assumption: compute eigen values of a 6x6 matrix for each body instead of using the diagonal values.
It would maybe let a higher coefficient be used: 0.9dt or so instead of 0.8dt, if you think it is worth it.

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