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[Jan Stránský <question697363@xxxxxxxxxxxxxxxxxxxxx>]

Question #697363 on Yade changed:
https://answers.launchpad.net/yade/+question/697363

    Status: Open => Needs information

Jan Stránský requested more information:
Hello,

please read [1] and provide more information.

> For a spherical packing ...

what is "a spherical packing"?
A MWE [1] would answer this question.

> what is the most effective way to identify the outermost particles?

How you define "most effective"? w.r.t. code writing? w.r.t. execution
performance?

how you define "outermost particles"? along axes? from center? important is particle center? particle surface? ... ?
How many "outermost particles"? 1? a few? 10? 100?

> how to apply forces to those identified particles?

O.forces.addF [2] of O.forces.setPermF [3]


Please, consider providing the packing in the form of a MWE. E.g. simple text file with a few predefined particles, also illustrating what particles are the "outermost" and why.

Cheers
Jan

[1] https://www.yade-dem.org/wiki/Howtoask
[2] https://yade-dem.org/doc/yade.wrapper.html#yade.wrapper.ForceContainer.addF
[3] https://yade-dem.org/doc/yade.wrapper.html#yade.wrapper.ForceContainer.setPermF

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