Question #701731 on Yade changed: https://answers.launchpad.net/yade/+question/701731
Description changed to: Hi all, I'm working on my cylinder particle case, however, when I start running my script below, the cylinder particles are segmented and the whole cylinder particle extends over time. I do not know why... Additionally, the script points out a ValueError: cannot convert float Nan to integer After I create the walls via aabbWalls(), only 3 walls are shown in the 3D view, why is it not showing all 6 walls? Finally, I checked my script and there is no code to create the yellow box shown in the 3D view... So, why the 3D view show this yellow Box? May someone have experience for this error? ### Scripts ### from __future__ import print_function from yade.gridpfacet import * from yade import pack, plot,qt import gts, os.path, locale from numpy import arange O.periodic=True #### Parameters #### # radius of cylinder cyl_R=0.1 # length of cylinder cyl_L=0.2 # friction angle phi=30.0 # Young's modulus E=1e6 idSteel=O.materials.append(FrictMat(young=210e9,poisson=.25,frictionAngle=.8,density=7.85e3,label='steel')) # wallMask=31 >> +/-x, +/-y, -z #O.bodies.append(geom.facetBox((0,0,0),(2.5,2.5,1),wallMask=63,material="steel" )) ## create walls walls=aabbWalls([(0,0,0),(5,5,2)],thickness=0.0,material='steel') wallIds=O.bodies.append(walls) ### periodic boundary for facetBox ### #O.cell.setBox(2.5,20.0,20.0) ### set the velocity for facet ### #for id in range(6): # b = O.bodies[id] # b.state.vel = (0,0,0.5) ### create materials ### # gridConnections material gridConMat= O.materials.append(CohFrictMat(young=E, poisson=0.5, density=1500, frictionAngle=radians(phi), normalCohesion=1e10, shearCohesion=1e10, momentRotationLaw=True, label='gcMat')) # general interactions cylMat= O.materials.append(FrictMat(young=E, poisson=0.5, density=1500, frictionAngle=radians(phi), label='cMat')) ### create particles/packing: cylinders ### nodesIds=[] cylIds=[] dx=0.5 dy=0.5 nx=5 ny=5 nz=1 dz=0 for i in range(0,nx): x=0+i*dx for j in range(0,ny): y=0+j*dy for k in range(0,nz): z=0+k*dz cylinder((x,y+cyl_L,z),(x,y,z),radius=cyl_R,nodesIds=nodesIds,cylIds=cylIds, color=[1,0,0],fixed=False,intMaterial='gcMat',extMaterial='cMat') #O.bodies.appendClumped() move = TranslationEngine(translationAxis=[0,0,1],velocity=0.1,ids=[0,1]) ### Engines ### O.engines = [ ForceResetter(), InsertionSortCollider([Bo1_GridConnection_Aabb(),Bo1_PFacet_Aabb(), Bo1_Wall_Aabb()]), InteractionLoop([ Ig2_GridNode_GridNode_GridNodeGeom6D(), Ig2_GridConnection_GridConnection_GridCoGridCoGeom(), Ig2_Wall_Sphere_ScGeom(), Ig2_Sphere_Sphere_ScGeom(), Ig2_Sphere_GridConnection_ScGridCoGeom(), Ig2_GridConnection_PFacet_ScGeom(), ], [ # internal cylinder physics Ip2_CohFrictMat_CohFrictMat_CohFrictPhys(setCohesionNow=True,setCohesionOnNewContacts=False), # physics for external interactions, i.e., cylinder-cylinder Ip2_FrictMat_FrictMat_FrictPhys() ], [ Law2_ScGeom6D_CohFrictPhys_CohesionMoment(), # contact law for "internal" cylinder forces Law2_GridCoGridCoGeom_FrictPhys_CundallStrack(), # contact law for cylinder-cylinder interaction Law2_ScGeom_FrictPhys_CundallStrack(), Law2_ScGridCoGeom_FrictPhys_CundallStrack() ] ), GlobalStiffnessTimeStepper(timestepSafetyCoefficient=0.5), NewtonIntegrator(gravity=(0., 0., -9.81), damping=0.5, label='newton'), move #TranslationEngine(translationAxis=[1,0,0],velocity=0.5,ids=[0,1,2,3,4,5]) #PyRunner(iterPeriod=1e-3,command="") ] O.dt=0.5*PWaveTimeStep() ### Define Functions ### #### For viewing #### qt.View() #### Allows to reload the simulation #### O.saveTmp() -- You received this question notification because your team yade-users is an answer contact for Yade. _______________________________________________ Mailing list: https://launchpad.net/~yade-users Post to : yade-users@lists.launchpad.net Unsubscribe : https://launchpad.net/~yade-users More help : https://help.launchpad.net/ListHelp