rad,gap=.15,.02 #Add material O.materials.append(FrictMat(young=10e9,poisson=.25,frictionAngle=0.5,density=1e3)) #Parameters, which will be passed into spheres and facets creators kw={'material':0} kwBoxes={'color':[1,0,0],'wire':False,'dynamic':False,'material':0} kwMeshes={'color':[1,1,0],'wire':True,'dynamic':False,'material':0} O.bodies.append( pack.regularHexa( (pack.inSphere((0,0,4),2)-pack.inSphere((0,-2,5),2)) & pack.notInNotch(centerPoint=(0,0,4),edge=(0,1,0),normal=(-1,1,-1),aperture=.2) ,radius=rad,gap=gap,color=(0,1,0),material=0) # head +[utils.sphere((.8,1.9,5),radius=.2,color=(.6,.6,.6),material=0),utils.sphere((-.8,1.9,5),radius=.2,color=(.6,.6,.6),material=0),utils.sphere((0,2.4,4),radius=.4,color=(1,0,0),material=0)] # eyes and nose +pack.regularHexa(pack.inCylinder((-1,2.2,3.3),(1,2.2,3.3),2*rad),radius=rad,gap=gap/3,color=(0.929,0.412,0.412),material=0) #mouth ) groundId=O.bodies.append(utils.facet([(12,0,-6),(0,12,-6,),(-12,-12,-6)],dynamic=False)) # ground for part in [ pack.regularHexa ( pack.inAlignedBox((-2,-2,-2),(2,2,2))-pack.inCylinder((0,-2,0),(0,2,0),1), radius=1.5*rad,gap=2*gap,color=(1,0,1),**kw), # body, pack.regularOrtho(pack.inEllipsoid((-1,0,-4),(1,1,2)),radius=rad,gap=0,color=(0,1,1),**kw), # left leg pack.regularHexa (pack.inCylinder((+1,1,-2.5),(0,3,-5),1),radius=rad,gap=gap,color=(0,1,1),**kw), # right leg pack.regularHexa (pack.inHyperboloid((+2,0,1),(+6,0,0),1,.5),radius=rad,gap=gap,color=(0,0,1),**kw), # right hand pack.regularOrtho(pack.inCylinder((-2,0,2),(-5,0,4),1),radius=rad,gap=gap,color=(0,0,1),**kw) # left hand ]: O.bodies.appendClumped(part) # Example of geom.facetBox usage
O.bodies.append( pack.regularHexa((pack.inSphere((0, 0, 4), 2) - pack.inSphere( (0, -2, 5), 2)) & pack.notInNotch(centerPoint=(0, 0, 4), edge=(0, 1, 0), normal=(-1, 1, -1), aperture=.2), radius=rad, gap=gap, color=(0, 1, 0), material=0) # head + [ utils.sphere((.8, 1.9, 5), radius=.2, color=(.6, .6, .6), material=0), utils.sphere((-.8, 1.9, 5), radius=.2, color=(.6, .6, .6), material=0), utils.sphere((0, 2.4, 4), radius=.4, color=(1, 0, 0), material=0) ] # eyes and nose + pack.regularHexa(pack.inCylinder((-1, 2.2, 3.3), (1, 2.2, 3.3), 2 * rad), radius=rad, gap=gap / 3, color=(0.929, 0.412, 0.412), material=0) #mouth ) groundId = O.bodies.append( utils.facet([(12, 0, -6), ( 0, 12, -6, ), (-12, -12, -6)], dynamic=False)) # ground for part in [ pack.regularHexa(pack.inAlignedBox( (-2, -2, -2), (2, 2, 2)) - pack.inCylinder((0, -2, 0),
runInGui = True, ) from yade.params.table import * assert testType in ['cyl','cube'] # materials concMat = O.materials.append(CpmMat( young=young,frictionAngle=frictionAngle,poisson=poisson,sigmaT=sigmaT, epsCrackOnset=epsCrackOnset,relDuctility=relDuctility )) frictMat = O.materials.append(FrictMat( young=young,poisson=poisson,frictionAngle=frictionAngle )) # spheres pred = pack.inCylinder((0,0,0),(0,0,height),.5*width) if testType=='cyl' else pack.inAlignedBox((-.5*width,-.5*width,0),(.5*width,.5*width,height)) if testType=='cube' else None sp=SpherePack() sp = pack.randomDensePack(pred,spheresInCell=2000,radius=rParticle,memoizeDb='/tmp/triaxTestOnCylinder.sqlite',returnSpherePack=True) spheres=sp.toSimulation(color=(0,1,1),material=concMat) # bottom and top of specimen. Will have prescribed velocity bot = [O.bodies[s] for s in spheres if O.bodies[s].state.pos[2]<rParticle*bcCoeff] top = [O.bodies[s] for s in spheres if O.bodies[s].state.pos[2]>height-rParticle*bcCoeff] vel = strainRate*(height-rParticle*2*bcCoeff) for s in bot: s.shape.color = (1,0,0) s.state.blockedDOFs = 'xyzXYZ' s.state.vel = (0,0,-vel) for s in top: s.shape.color = Vector3(0,1,0) s.state.blockedDOFs = 'xyzXYZ'
assert testType in ['cyl', 'cube'] # materials concMat = O.materials.append( CpmMat(young=young, frictionAngle=frictionAngle, poisson=poisson, sigmaT=sigmaT, epsCrackOnset=epsCrackOnset, relDuctility=relDuctility)) frictMat = O.materials.append( FrictMat(young=young, poisson=poisson, frictionAngle=frictionAngle)) # spheres pred = pack.inCylinder( (0, 0, 0), (0, 0, height), .5 * width) if testType == 'cyl' else pack.inAlignedBox( (-.5 * width, -.5 * width, 0), (.5 * width, .5 * width, height)) if testType == 'cube' else None sp = SpherePack() sp = pack.randomDensePack(pred, spheresInCell=2000, radius=rParticle, memoizeDb='/tmp/triaxTestOnCylinder.sqlite', returnSpherePack=True) spheres = sp.toSimulation(color=(0, 1, 1), material=concMat) # bottom and top of specimen. Will have prescribed velocity bot = [ O.bodies[s] for s in spheres if O.bodies[s].state.pos[2] < rParticle * bcCoeff
rad,gap=.15,.02 #Add material O.materials.append(FrictMat(young=10e9,poisson=.25,frictionAngle=0.5,density=1e3)) #Parameters, which will be passed into spheres and facets creators kw={'material':0} kwBoxes={'color':[1,0,0],'wire':False,'dynamic':False,'material':0} kwMeshes={'color':[1,1,0],'wire':True,'dynamic':False,'material':0} O.bodies.append( pack.regularHexa( (pack.inSphere((0,0,4),2)-pack.inSphere((0,-2,5),2)) & pack.notInNotch(centerPoint=(0,0,4),edge=(0,1,0),normal=(-1,1,-1),aperture=.2) ,radius=rad,gap=gap,color=(0,1,0),material=0) # head +[sphere((.8,1.9,5),radius=.2,color=(.6,.6,.6),material=0),sphere((-.8,1.9,5),radius=.2,color=(.6,.6,.6),material=0),sphere((0,2.4,4),radius=.4,color=(1,0,0),material=0)] # eyes and nose +pack.regularHexa(pack.inCylinder((-1,2.2,3.3),(1,2.2,3.3),2*rad),radius=rad,gap=gap/3,color=(0.929,0.412,0.412),material=0) #mouth ) groundId=O.bodies.append(facet([(12,0,-6),(0,12,-6,),(-12,-12,-6)],dynamic=False)) # ground for part in [ pack.regularHexa ( pack.inAlignedBox((-2,-2,-2),(2,2,2))-pack.inCylinder((0,-2,0),(0,2,0),1), radius=1.5*rad,gap=2*gap,color=(1,0,1),**kw), # body, pack.regularOrtho(pack.inEllipsoid((-1,0,-4),(1,1,2)),radius=rad,gap=0,color=(0,1,1),**kw), # left leg pack.regularHexa (pack.inCylinder((+1,1,-2.5),(0,3,-5),1),radius=rad,gap=gap,color=(0,1,1),**kw), # right leg pack.regularHexa (pack.inHyperboloid((+2,0,1),(+6,0,0),1,.5),radius=rad,gap=gap,color=(0,0,1),**kw), # right hand pack.regularOrtho(pack.inCylinder((-2,0,2),(-5,0,4),1),radius=rad,gap=gap,color=(0,0,1),**kw) # left hand ]: O.bodies.appendClumped(part) # Example of geom.facetBox usage
) from yade.params.table import * # material concreteId = O.materials.append( CpmMat( young=young, poisson=poisson, frictionAngle=frictionAngle, epsCrackOnset=epsCrackOnset, relDuctility=relDuctility, sigmaT=sigmaT, )) # spheres sp = pack.randomDensePack(pack.inCylinder((0, 0, 0), (specimenLength, 0, 0), specimenRadius), radius=sphereRadius, spheresInCell=500, memoizeDb='/tmp/packing-brazilian.db', returnSpherePack=True) sp.toSimulation() # walls zMin, zMax = [pt[2] for pt in aabbExtrema()] wallIDs = O.bodies.append([wall((0, 0, z), 2) for z in (zMin, zMax)]) walls = wallMin, wallMax = [O.bodies[i] for i in wallIDs] v = strainRate * 2 * specimenRadius wallMin.state.vel = (0, 0, +v) wallMax.state.vel = (0, 0, -v) # engines
from yade import pack """Simple script to create tunnel with random dense packing of spheres. The tunnel is difference between an axis-aligned box and cylinder, or which axis is going through the bottom wall (-z) of the box. The tunnel hole is oriented along +y, the face is in the xz plane. The first you run this scipt, a few minutes is neede to generate the packing. It is saved in /tmp/triaxPackCache.sqlite and at next time it will be only loaded (fast). """ # set some geometry parameters: domain box size, tunnel radius, radius of particles boxSize=Vector3(5,8,5) tunnelRad=2 rSphere=.1 # construct spatial predicate as difference of box and cylinder: # (see scripts/test/pack-predicates.py for details) # # http://beta.arcig.cz/~eudoxos/yade/epydoc/yade._packPredicates.inAlignedBox-class.html # http://beta.arcig.cz/~eudoxos/yade/epydoc/yade._packPredicates.inCylinder-class.html pred=pack.inAlignedBox((-.5*boxSize[0],-.5*boxSize[1],0),(.5*boxSize[0],.5*boxSize[1],boxSize[2])) - pack.inCylinder((-.5*boxSize[0],0,0),(.5*boxSize[0],0,0),tunnelRad) # Use the predicate to generate sphere packing inside # # http://beta.arcig.cz/~eudoxos/yade/epydoc/yade.pack-module.html#randomDensePack O.bodies.append(pack.randomDensePack(pred,radius=rSphere,rRelFuzz=.3,memoizeDb='/tmp/triaxPackCache.sqlite',spheresInCell=3000)) from yade import qt qt.Controller() qt.View()