yade-users team mailing list archive

[Robert Caulk <question656214@xxxxxxxxxxxxxxxxxxxxx>]

Question #656214 on Yade changed:
https://answers.launchpad.net/yade/+question/656214

    Status: Open => Answered

Robert Caulk proposed the following answer:
Hello Jesse,

>Since the clumps are still not being compressed, I believe the MWE I
posted before should still be valid.

Just because you believe it, does not make it true ;-) [1].

Here is a script that uses makeclumpcloud together with
periTriaxController.

from yade import pack,qt
O.periodic=True
O.cell.hSize=Matrix3(1, 0, 0,
		     0 ,1, 0,
		    0, 0, 1)	    
sp=pack.SpherePack()
sp=pack.SpherePack()
c1=pack.SpherePack([((0,0,0),.1),((.15,0,0),.05),((0,.1,0),.05)])
sp.makeClumpCloud(Vector3().Zero,O.cell.refSize,[c1],periodic=True)
sp.toSimulation()

O.engines=[
	ForceResetter(),
	InsertionSortCollider([Bo1_Sphere_Aabb()]),
	InteractionLoop(
		[Ig2_Sphere_Sphere_ScGeom()],
		[Ip2_FrictMat_FrictMat_FrictPhys()],
		[Law2_ScGeom_FrictPhys_CundallStrack()]
	),
	#PeriTriaxController(maxUnbalanced=0.01,relStressTol=0.02,goal=[-1e4,-1e4,0],stressMask=3,globUpdate=5,maxStrainRate=[1.,1.,1.],doneHook='triaxDone()',label='triax'),
	#using cell inertia
	PeriTriaxController(dynCell=True,mass=0.2,maxUnbalanced=0.01,relStressTol=0.02,goal=(-1e4,-1e4,0),stressMask=3,globUpdate=5,maxStrainRate=(1.,1.,1.),doneHook='triaxDone()',label='triax'),
	NewtonIntegrator(damping=.2),
]
O.dt=PWaveTimeStep()
O.run();
qt.View()

phase=0
def triaxDone():
	global phase
	if phase==0:
		print 'Here we are: stress',triax.stress,'strain',triax.strain,'stiffness',triax.stiff
		print 'Now εz will go from 0 to .2 while σx and σy will be kept the same.'
		triax.goal=(-1e4,-1e4,-0.2)
		phase+=1
	elif phase==1:
		print 'Here we are: stress',triax.stress,'strain',triax.strain,'stiffness',triax.stiff
		print 'Done, pausing now.'
		O.pause()

[1]https://yade-dem.org/wiki/Howtoask

-- 
You received this question notification because your team yade-users is
an answer contact for Yade.