Question #688791 on Yade changed:
https://answers.launchpad.net/yade/+question/688791
Status: Answered => Solved
Leonard confirmed that the question is solved:
Thanks rcaulk and jduriez,
Sorry for getting back late.
I met this problem by:
###
Firstly run script1 to generate sample and save it:
O.save('sample.yade.gz')
Then using script2 to reload the sample: O.load('sample.yade.gz'),
Then, carrying out triaxial test in script2.
In script2, when I define the O.engines as follow, it shows error:
###Following engines shows error###
O.engines=[
ForceResetter(),
InsertionSortCollider([Bo1_Sphere_Aabb(),Bo1_Box_Aabb()]),
InteractionLoop(
[Ig2_Sphere_Sphere_ScGeom6D(),Ig2_Box_Sphere_ScGeom()],
[Ip2_CohFrictMat_CohFrictMat_CohFrictPhys(),
Ip2_FrictMat_FrictMat_FrictPhys()],
[Law2_ScGeom6D_CohFrictPhys_CohesionMoment(),Law2_ScGeom_FrictPhys_CundallStrack()]
),
GlobalStiffnessTimeStepper(active=1,timeStepUpdateInterval=100,timestepSafetyCoefficient=0.8),
triax,
TriaxialStateRecorder(iterPeriod=100,file='WallStresses'),
PyRunner(command='stopIfDamaged()',iterPeriod=1000),
NewtonIntegrator(damping=0.4),
]
When I change the engines into the following one, it works well. The
difference between the error one and good one is the position of
NewtonIntegrator(damping=0.4).
##Following O.engines works well###
O.engines=[
ForceResetter(),
InsertionSortCollider([Bo1_Sphere_Aabb(),Bo1_Box_Aabb()]),
InteractionLoop(
[Ig2_Sphere_Sphere_ScGeom6D(),Ig2_Box_Sphere_ScGeom()],
[Ip2_CohFrictMat_CohFrictMat_CohFrictPhys(),
Ip2_FrictMat_FrictMat_FrictPhys()],
[Law2_ScGeom6D_CohFrictPhys_CohesionMoment(),Law2_ScGeom_FrictPhys_CundallStrack()]
),
GlobalStiffnessTimeStepper(active=1,timeStepUpdateInterval=100,timestepSafetyCoefficient=0.8),
triax,
TriaxialStateRecorder(iterPeriod=100,file='WallStresses'),
NewtonIntegrator(damping=0.4),
PyRunner(command='stopIfDamaged()',iterPeriod=1000),
]
I don't know why but it works.
Cheers,
Leonard
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