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[Robert Caulk <question683687@xxxxxxxxxxxxxxxxxxxxx>]

Question #683687 on Yade changed:
https://answers.launchpad.net/yade/+question/683687

    Status: Answered => Open

Robert Caulk is still having a problem:
Hmmm, your example doesn't include a triangulation. Maybe it is a
triangulation serialization problem since CGAL is involved? If we
consider the least special case that includes a triangulation it still
doesnt work:

from __future__ import print_function
from builtins import range
from yade import pack

num_spheres=1000# number of spheres
young=1e6
compFricDegree = 3 # initial contact friction during the confining phase
finalFricDegree = 30 # contact friction during the deviatoric loading
mn,mx=Vector3(0,0,0),Vector3(1,1,1) # corners of the initial packing

O.materials.append(FrictMat(young=young,poisson=0.5,frictionAngle=radians(compFricDegree),density=2600,label='spheres'))
O.materials.append(FrictMat(young=young,poisson=0.5,frictionAngle=0,density=0,label='walls'))
walls=aabbWalls([mn,mx],thickness=0,material='walls')
wallIds=O.bodies.append(walls)

import os.path
savedState = os.path.exists('oedometer_state.yade.gz')

if not savedState:

	sp=pack.SpherePack()
	sp.makeCloud(mn,mx,-1,0.3333,num_spheres,False, 0.95,seed=1) #"seed" make the "random" generation always the same
	sp.toSimulation(material='spheres')

	O.engines=[
		ForceResetter(),
		InsertionSortCollider([Bo1_Sphere_Aabb(),Bo1_Box_Aabb()]),
		InteractionLoop(
			[Ig2_Sphere_Sphere_ScGeom(),Ig2_Box_Sphere_ScGeom()],
			[Ip2_FrictMat_FrictMat_FrictPhys()],
			[Law2_ScGeom_FrictPhys_CundallStrack()],label="iloop"
		),
		FlowEngine(dead=1,label="flow"),	GlobalStiffnessTimeStepper(active=1,timeStepUpdateInterval=100,timestepSafetyCoefficient=0.8),
		NewtonIntegrator(damping=0.2,label='newton')
	]

if not savedState:
	#B. Activate flow engine and set boundary conditions in order to get permeability
	flow.dead=0
	flow.defTolerance=-1
	flow.meshUpdateInterval=-1
	flow.useSolver=3
	flow.permeabilityFactor=1
	flow.viscosity=10
	flow.bndCondIsPressure=[0,0,1,1,0,0]
	flow.bndCondValue=[0,0,1,0,0,0]
	flow.boundaryUseMaxMin=[0,0,0,0,0,0]
	O.dt=0.1e-3
	O.dynDt=False
	newton.damping=0
	
	O.run(1000,1)
	print('saving oedometer state with pore pressure at',flow.getPorePressure((0.5,0.5,0.5)))
	O.save('oedometer_state.yade.gz')
else:
	O.load('oedometer_state.yade.gz')
	print('loaded oedometer state with pore pressure at',flow.getPorePressure((0.5,0.5,0.5)))
	O.run(100,1)


from yade import plot

def history():
	plot.addData(t=O.time,p=flow.getPorePressure((0.5,0.5,0.5)))

O.engines=O.engines+[PyRunner(iterPeriod=200,command='history()',label='recorder')]

from yade import plot

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