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[孙灿 <question703209@xxxxxxxxxxxxxxxxxxxxx>]

New question #703209 on Yade:
https://answers.launchpad.net/yade/+question/703209

Now I need to simulate a box with a height of 30m, and the particles at the bottom 15m and the upper 15m need to use different materials. At present, I use the following code to complete it, but it seems to be wrong.

SphereMat = O.materials.append(FrictMat(young = Young, poisson = PoissonRatio, frictionAngle = radians(FrictionAngle), density = Density))
SphereMat1 = O.materials.append(FrictMat(young = Young1, poisson = PoissonRatio1, frictionAngle = radians(FrictionAngle1), density = Density1))
WallMat = O.materials.append(FrictMat(young = WYoung, poisson = WPoissonRatio, frictionAngle = radians(WFrictionAngle)))

O.bodies.append(geom.facetBox((0.05, 9,15), (0.1, 9, 15), wallMask=63,material=WallMat))
sp = pack.SpherePack()
sp.makeCloud(Vector3(0.05,0,0),Vector3(0.05,18,15), rMean=0.05, rRelFuzz=0)
sp.toSimulation(material = SphereMat)

sp.makeCloud(Vector3(0.05,0,15),Vector3(0.05,18,30), rMean=0.05, rRelFuzz=0)
sp.toSimulation(material = SphereMat1)

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