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Re: [Question #293955]: How to generate dense packing of aggregates

 

Question #293955 on Yade changed:
https://answers.launchpad.net/yade/+question/293955

    Status: Answered => Open

VG is still having a problem:
Thanks a lot Jan, that did the trick!

I am facing another challenge with the dense packing generated this way.
When I use this packing in the main simulation, lot of cohesive bonds
break even before I apply the actual loading. This is mostly because the
initial packing has overlaps and is not stress-free. Now, I can think of
two possible solutions to this:

1. The solution proposed by Luc Scholtest in #6 at
https://answers.dogfood.paddev.net/yade/+question/164575 , i.e changing
the interaction law such that the initial overlapping is utilized as
equilibrium distance to compute the normal force Fn=k*(D-Deq). I tried
to look into Yade documentation but I couldn't find much on this and how
I can go about doing this.

2. In compress.py, after compressing the sample by 
compressor.goal1 = compressor.goal2 = compressor.goal3 = -1e-7
O.run(50000,True)
compressor.goal1 = compressor.goal2 = compressor.goal3 = -1e-5
O.run(30000,True)

May be uncompress the sample by 
compressor.goal1 = compressor.goal2 = compressor.goal3 = 1e-5
O.run(50000, True)


The second solution above would again make the packing loose, defeating the purpose. So really, if there is a possibility of somehow using the first solution above. Or if anyone can please provide some other suggestion ?

Thanks
Varun

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