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[Karol Brzezinski <question699375@xxxxxxxxxxxxxxxxxxxxx>]

New question #699375 on Yade:
https://answers.launchpad.net/yade/+question/699375

Hi,

I encountered a problem with manipulation of force container after I erase some bodies from simulation. For example, command O.forces.reset() results in 'segmentation core fault'. I have found a 'dirty fix' to this (setting zero permF to any of the left bodies). However, I don't understand this behavior. How should it be properly handled? 

# this code works
O.bodies.append([sphere((0,0,i),0.5) for i in range(3)])
O.forces.reset()
#

# this code fails
O.bodies.append([sphere((0,0,i),0.5) for i in range(3)])
O.bodies.erase(0)
O.forces.reset()
#

#but this works
O.bodies.append([sphere((0,0,i),0.5) for i in range(3)])
O.bodies.erase(0)
O.forces.setPermF(1,(0,0,0))
O.forces.reset()
#


I am using Ubuntu 20.04. I have tried this on different versions of Yadedaily (e.g 20210923-5934~44b94a0~focal1) and on Yade 2020.01a.

Best wishes,
KB

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