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[孙灿 <question702505@xxxxxxxxxxxxxxxxxxxxx>]

Question #702505 on Yade changed:
https://answers.launchpad.net/yade/+question/702505

    Status: Answered => Open

孙灿 is still having a problem:
Thank you for pointing out the indentation error. I modified the code
and still found some problems (the particle deletion mentioned above is
not clean)

>I have tried you code.
I clearly see a circular hole in the packing and newly added particles.
Please define what you mean by "not completely removed". Particles are either removed or not.

If you do not carefully observe the circular hole in the simulation, you
will think that there is no problem. Blue particles are old particles
and white particles are newly added particles. Through the 3D rendering
of the console, it is found that blue particles (i.e. old particles)
still exist in the circular hole, and white particles (new particles)
coincide with the surrounding blue particles.

>If your concerns are that the newly added particles are overlapping
with the existing particles, you have two options

Because of my simulation requirements, I can't put the new particles
closer to the hole. I need to distribute the new particles along the
periphery of the circular hole. For example, the radius of the circular
hole is 5mm, and the radius of the new particles is 0.5mm, so the
distance from the center of the circular hole to the center of the new
particle is 4.5mm

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