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Re: [Question #653755]: Build error: no suitable spherical body to calculate dt

To: yade-users@xxxxxxxxxxxxxxxxxxx
From: Jan Stránský <question653755@xxxxxxxxxxxxxxxxxxxxx>
Date: Fri, 18 Aug 2017 11:32:34 -0000
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Question #653755 on Yade changed:
https://answers.launchpad.net/yade/+question/653755

    Status: Open => Answered

Jan Stránský proposed the following answer:
Hello,
please open a new topic if your new question is unrelated to the original problem. There please specify what "data from the trap door" actually means
The pressure is simply got by summing forces and divided by area of corresponding facets
###
ids = [...] # a list of ids of facets of interest
force = sum(O.forces.f(id)[2] for id in ids)
area = sum(O.bodies[id].shape.area for id in ids)
pressure = force / area
###
cheers
Jan

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