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[Jan Stránský <question224276@xxxxxxxxxxxxxxxxxxxxx>]

Question #224276 on Yade changed:
https://answers.launchpad.net/yade/+question/224276

    Status: Open => Answered

Jan Stránský proposed the following answer:
Hello Riccardo,

are the forces considered by this function only those due to contact with
> particles?
>

not necessarily, but sometimes yes. sumForces takes forces form O.forces
container, where are total forces acting on bodies (from interactions,
gravity etc.). So if you are only interested in facests (which are
nondynamic with zero mass by default) and you did not chage aforementioned
settings, the summed forces are only due to contacts with particles.


> if I consider a facet on the cylinder that do not touch any particle, this
> facet won't give back any forces even if it is part of a rigid "body" made
> of facets that somewhere else touches particles,
> am I right?
>

yes

regards
Jan

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