New question #645503 on Yade: https://answers.launchpad.net/yade/+question/645503
Hi There, I am working on generating a compressed packing of aggregates. I am currently using /examples/agglomerate as a basis. I am using makeClumpCloud to fill a cuboid with clumps which I generated. Then I would like to run them through /examples/agglomerate/compress.py and generate a dense packing of these aggregates. I would like the method to work for just a few aggregates as well as for a larger number. The result using just a few looks like http://pasteall.org/pic/index.php?id=116817 (When I generate a larger number of particles things look better http://pasteall.org/pic/index.php?id=116816) As you see from the first image, there are fewer particles left after the compression. Why is this the case? Does this have something to do with periodicity? Am I only seeing some of the particles? If so, how do I export all particles within my volume. In case I am going about this wrong, how should I generate the packing of aggregates and then compress them such that I end up with a cuboid of packed aggregates (when the total number of particles is ~200) many thanks in advance! Jesse the compress code is shown below. from yade import export,ymport import random random.seed(1) # add walls first #dim = (15,15,15) dim = (1e-6,1e-6,1e-6) walls = aabbWalls(((0,0,0),(dim))) wallIds = O.bodies.append(walls) # load spheres from file, including information of their agglomerates ids attrs = [] sp = ymport.textExt('/tmp/divided.txt',format='x_y_z_r_attrs',attrs=attrs) n = max(int(a[0]) for a in attrs)+1 colors = [randomColor() for _ in xrange(n)] agglomerates = [[] for _ in xrange(n)] for s,a in zip(sp,attrs): aa = int(a[0]) s.agglomerate = aa s.shape.color = colors[aa] agglomerates[aa].append(s) for a in agglomerates: O.bodies.appendClumped(a) #getClumpInfo() O.engines = [ ForceResetter(), InsertionSortCollider([Bo1_Sphere_Aabb(),Bo1_Box_Aabb()]), InteractionLoop( [Ig2_Sphere_Sphere_ScGeom(),Ig2_Box_Sphere_ScGeom()], [Ip2_FrictMat_FrictMat_FrictPhys()], [Law2_ScGeom_FrictPhys_CundallStrack()] ), TriaxialStressController( thickness = 0, stressMask = 7, internalCompaction = False, label = 'compressor', ), NewtonIntegrator(damping=.6), ] O.dt = PWaveTimeStep() # compress the sample compressor.goal1 = compressor.goal2 = compressor.goal3 = -1e-7 #compressor.goal1 = compressor.goal2 = compressor.goal3 = 1e-10 O.run(50000,True) #compressor.goal1 = compressor.goal2 = compressor.goal3 = -1e-5 #O.run(30000,True) # save the result, including information of agglomerates which the particle belongs to export.textExt('/tmp/compressed.txt','x_y_z_r_attrs',attrs=['b.agglomerate']) -- 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 : [email protected] Unsubscribe : https://launchpad.net/~yade-users More help : https://help.launchpad.net/ListHelp
