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[Akm <question687294@xxxxxxxxxxxxxxxxxxxxx>]

New question #687294 on Yade:
https://answers.launchpad.net/yade/+question/687294

I am trying to apply a permanent force on a sphere with the help of a utils box(only one side as a plate). But when I apply a permanent force on the plate, the plate passes through the sphere as if there is no interaction instead of moving the sphere. Kindly help me with this issue. 

Yade 20191217-2900~6d5e1cb~xenial1 
Using python version: 3.5.2 

Here is the Minimal working script:

from yade import pack, qt, export, ymport, plot

O.reset()

concrete_material=CpmMat(
	young = 1e10,
    density=1400, 
	poisson = 0.25,
	frictionAngle = radians(40),
	epsCrackOnset = 1e-4,
	relDuctility = 10,
	sigmaT = 1e18,
    	label='concrete_mat'
)
mat1=O.materials.append(concrete_material)

#O.materials.append(FrictMat(frictionAngle=0,density=0,label='walls'))

O.bodies.append([
	sphere(center=(0,0,0),radius=.5,fixed=False,material='concrete_mat'),
])

O.engines=[
    ForceResetter(),
    InsertionSortCollider([Bo1_Sphere_Aabb(aabbEnlargeFactor=1,label='bo1s'),Bo1_Facet_Aabb(),Bo1_Wall_Aabb(),Bo1_Box_Aabb()]),
    InteractionLoop(
		[Ig2_Sphere_Sphere_ScGeom(interactionDetectionFactor=1,label='ig2s'),Ig2_Facet_Sphere_ScGeom(),Ig2_Wall_Sphere_ScGeom(),Ig2_Box_Sphere_ScGeom()],
		[Ip2_CpmMat_CpmMat_CpmPhys(cohesiveThresholdIter=1)],
		[Law2_ScGeom_CpmPhys_Cpm()] 
	),
    NewtonIntegrator(gravity=(0,0,0),damping=0.5),    
    GlobalStiffnessTimeStepper(active=True,timeStepUpdateInterval=1,timestepSafetyCoefficient=0.8),
]

O.step()


U_box= utils.box((.5,1,-.5),(1,0,.5),fixed=False,wire=False,color=(1,0,0))
O.bodies.append(U_box)


U_box.state.mass=10

O.forces.setPermF(U_box.id,(0,-20,0))

yade.qt.View()

O.saveTmp()






####
Thanks in advance
Arun


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