> > > yes, my materials are completely different, one of them is sand and the > another one plastic grains. > > ok, then you can create just one sp (with two makeCloud calls) and do material assignment afterwards, something like:
from yade import pack O.materials.append((FrictMat(young=1e9),FrictMat(young=3e9))) mat1,mat2 = [O.materials[i] for i in (0,1)] r1,r2 = 1.0,2.0 sp = pack.SpherePack() maxCorner = (20,20,20) sp.makeCloud(maxCorner=maxCorner,rMean=r1,num=20) sp.makeCloud(maxCorner=maxCorner,rMean=r2,num=10) sp.toSimulation() bodies1 = [b for b in O.bodies if b.shape.radius==r1] bodies2 = [b for b in O.bodies if b.shape.radius==r2] for b in bodies1: b.mat = mat1 b.shape.color = (1,0,0) for b in bodies2: b.mat = mat2 b.shape.color = (0,0,1) cheers Jan
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