Question #701750 on Yade changed: https://answers.launchpad.net/yade/+question/701750
Status: Needs information => Open enki gave more information on the question: Thanks Jan, 1) The parameter translationAxis=[0,0,1] means that all index wallIds will move in the z direction >> What if we would like to apply specific direction for each wall? i.e. y direction for top and bottom wall, x direction for left and right wall, z direction for front and back It seems that the above code, can only control one direction for 6 walls at one time 2) Example MWE script is shown as below: #### 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([(-2.5,-2.5,-2.5),(2.5,2.5,2.5)],thickness=0.0,material='steel') wallIds=O.bodies.append(walls) ### periodic boundary for wall ### #O.periodic=True #O.cell.hSize=Matrix3(0.8,0,0,0,1,0,0,0,0.8) ### 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=2 ny=2 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=1,ids=[0,1,2,3,4,5]) ### 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() #### 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