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[Yor1 <question269486@xxxxxxxxxxxxxxxxxxxxx>]

Question #269486 on Yade changed:
https://answers.launchpad.net/yade/+question/269486

    Status: Answered => Solved

Yor1 confirmed that the question is solved:
Thanks for your advices, it is my first time that i use the mailing list.
I'm trying to model 3-points pending test. I am beginner in YADE.
these are my engines:

##### simulation piston's movement
O.engines=[
ForceResetter(),
	InsertionSortCollider([Bo1_Box_Aabb(),Bo1_Sphere_Aabb(aabbEnlargeFactor=intR,label='Saabb')]),
	InteractionLoop(
		[Ig2_Sphere_Sphere_ScGeom(interactionDetectionFactor=intR,label='SSgeom'),Ig2_Box_Sphere_ScGeom()],
		[Ip2_JCFpmMat_JCFpmMat_JCFpmPhys(cohesiveTresholdIteration=1,label='interactionPhys')],
		[Law2_ScGeom_JCFpmPhys_JointedCohesiveFrictionalPM(recordCracks=True,Key=OUT,label='interactionLaw')]
	),
	TranslationEngine(translationAxis=[0,-5,0],velocity=0.5,ids=piston), # piston motion
	GlobalStiffnessTimeStepper(active=1,timeStepUpdateInterval=10,timestepSafetyCoefficient=0.4, defaultDt=0.1*utils.PWaveTimeStep()),
        NewtonIntegrator(damping=0,gravity=[0,0,-9.8],label="newton"),
	VTKRecorder(iterPeriod=int(saveVTK),fileName=OUT+'-',recorders=['spheres','facets','jcfpm'])

##### simulation  beam's grains  movement 
O.engines=[
        ForceResetter(),
        InsertionSortCollider([Bo1_Box_Aabb(),Bo1_Sphere_Aabb(aabbEnlargeFactor=intR,label='Saabb')]),
	InteractionLoop(
		[Ig2_Sphere_Sphere_ScGeom(interactionDetectionFactor=intR,label='SSgeom'),Ig2_Box_Sphere_ScGeom()],
		[Ip2_JCFpmMat_JCFpmMat_JCFpmPhys(cohesiveTresholdIteration=1,label='interactionPhys')],
		[Law2_ScGeom_JCFpmPhys_JointedCohesiveFrictionalPM(recordCracks=True,Key=OUT,label='interactionLaw')]
	),

        TriaxialStressController(internalCompaction=False,label='triax'),
        GlobalStiffnessTimeStepper(active=1,timeStepUpdateInterval=10,timestepSafetyCoefficient=0.4, defaultDt=0.1*utils.PWaveTimeStep()),
        NewtonIntegrator(damping=DAMP,label="newton"),
        PyRunner(iterPeriod=int(saveData),initRun=True,command='recorder()',label='data'),
        VTKRecorder(iterPeriod=int(saveVTK),initRun=True,fileName=OUT+'-',recorders=['spheres','jcfpm','cracks'],Key=OUT,label='vtk')

When i use the twice, the piston don't move.

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