Question #221362 on Yade changed:
https://answers.launchpad.net/yade/+question/221362
Status: Open => Answered
Christian Jakob proposed the following answer:
>Resulting:
> mass_sphere1 = mass_clump1 = mass_clump2
> inertia_sphere1 ≠ inertia_clump1 ≠ inertia_clump2
>Is that wrong? Does the adaptClumpMasses method take into account the
>overlapping
>correctly to calculate the inertia?
I do not see any problem.
sphere2 = sphere4
sphere3 is completely inside sphere2 and sphere 5 is completely inside sphere4,
so they have to have same clump masses.
if densities for all spheres are equal, the sphere1 should also have the same
mass as both of the clumps.
that leads to:
mass_sphere1 = mass_clump1 = mass_clump2
inertia is not calculated correctly in this case, because for clumps it is
calculated as sum of all inertias of clump members, so inertia_sphere1 should
be different from inertia_clump1 and inertia_clump2.
in your case inertia for clumps is calculated too high. maybe some day this
will be fixed/improved ...
the inertia of both clumps should be also different, because their geometry is
different (different balance point of masses)
regards,
christian
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