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Re: [Question #675246]: inertia calculation facetbox

 

Question #675246 on Yade changed:
https://answers.launchpad.net/yade/+question/675246

    Status: Open => Answered

Bruno Chareyre proposed the following answer:
(re-posting answer sent to yade-users yesterday by mistake)
Hi,
Facets have positions which are not necessarily their center of mass, which makes the contribution mass*distance to inertia not fully consistent.

Note also (1) that discretization=100 is not a good idea since facets
have no volume. Fortunately it seems to work still, for some reason, but
I suggest discretization=0 to be sure.

Note also (2) that if you want to simulate dynamic polyhedra with
clumped facets it will probably not work very well. Better use proper
Polyhedra or clumped Pfacets.

Regards

Bruno

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