Re: [Yade-users] [Question #685539]: shape orientation for Potential Block
Question #685539 on Yade changed: https://answers.launchpad.net/yade/+question/685539 Status: Open => Expired Launchpad Janitor expired the question: This question was expired because it remained in the 'Open' state without activity for the last 15 days. -- 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
Re: [Yade-users] [Question #685539]: shape orientation for Potential Block
Question #685539 on Yade changed: https://answers.launchpad.net/yade/+question/685539 Status: Expired => Open Ali Rafiee is still having a problem: Hi Vasileios, I looked at this code in C ++, but I do not have much experience in C ++. but I think, there is no problem on finding vertex coordinates, but there is a problem on the rotation operation. I'm counting on you as soon as you find time to try to fix this problem. Thank you very much Best regards Ali -- 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
Re: [Yade-users] [Question #685539]: shape orientation for Potential Block
Question #685539 on Yade changed: https://answers.launchpad.net/yade/+question/685539 Status: Open => Expired Launchpad Janitor expired the question: This question was expired because it remained in the 'Open' state without activity for the last 15 days. -- 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
Re: [Yade-users] [Question #685539]: shape orientation for Potential Block
Question #685539 on Yade changed: https://answers.launchpad.net/yade/+question/685539 Vasileios Angelidakis posted a new comment: Hi Ali, Sorry for the late reply. I have checked your MWS and I agree the orientation is not calculated properly in this example. Thanks for bringing this to my attention. I will keep you posted when I find the time to track the problem and fix it. If you feel like having a look in the source code [1], two minds are better than one :) All the best, Vasileios [1] https://gitlab.com/yade- dev/trunk/blob/master/pkg/dem/PotentialBlock.cpp -- 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
Re: [Yade-users] [Question #685539]: shape orientation for Potential Block
Question #685539 on Yade changed: https://answers.launchpad.net/yade/+question/685539 Ali Rafiee posted a new comment: Hi Vasileios, I see that apparently you have not had time to look at this example. if you need another example I can do it. but this problem of orientation is not always solved. Thanks a lot Best regards Ali -- 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
Re: [Yade-users] [Question #685539]: shape orientation for Potential Block
Question #685539 on Yade changed: https://answers.launchpad.net/yade/+question/685539 Ali Rafiee gave more information on the question: Here is a simple example with a single polyhedron. Thanks again Ali ## simple code from yade import polyhedra_utils from yade import export, ymport from yade import plot from yade import qt import itertools import numpy as np import math import random gravel = PolyhedraMat() gravel.IsSplitable = False gravel.strength = 7.9e6 gravel.density = 2678#kg/m^3 gravel.young = 5.98e7 #Pa gravel.poisson =0.3 gravel.frictionAngle = 0.5 #rad inputfil="poly-1" inputfiln=inputfil+".txt" O.materials.append(FrictMat(young=1e10,poisson=0.25,frictionAngle=radians(0.0),density=2500,label='frictionless')) ##" O.engines=[ ForceResetter(), InsertionSortCollider([PotentialBlock2AABB()],verletDist=0.01), InteractionLoop( [Ig2_PB_PB_ScGeom(twoDimension=False, unitWidth2D=1.0)], [Ip2_FrictMat_FrictMat_KnKsPBPhys(kn_i=1e8, ks_i=1e7, Knormal=1e8, Kshear=1e7, useFaceProperties=False, calJointLength=False, viscousDamping=0.2)], [Law2_SCG_KnKsPBPhys_KnKsPBLaw(label='law',neverErase=False, allowViscousAttraction=True, traceEnergy=False)] ), #GlobalStiffnessTimeStepper(), NewtonIntegrator(damping=0.0,exactAsphericalRot=True,gravity=[0,0,-9.81]), #PotentialBlockVTKRecorder(fileName='./vtk/Arch-1',iterPeriod=1,twoDimension=False,sampleX=50,sampleY=50,sampleZ=50,maxDimension=0.2,label='vtkRecorder') ] ### chosenR=0.0001 bbb=Body() wire=False color=[0,0.5,1] highlight=False bbb.shape=PotentialBlock(k=0.0, r=chosenR, R=0.0, a=[0.4233422835886639,-0.0,-1.0,-0.0,-0.0,-0.2544435504552162,-0.0,0.2256157225428006,0.7071067811865475], b=[-0.4658182304526213,-1.0,0.0,1.0,-0.0,-0.0,0.2924660204513265,-0.5965652970583126,-0.0], c=[-0.4658182304526213,0.0,-0.0,-0.0,1.0,-0.8250734563293101,-0.12273156061799324,-0.4512314450856012,-0.0], d=[0.9630391247904834,1.20623023977275,1.83734355291125,0.79356976022725,1.1039638685226245,1.2066387820121347,0.3419810759564882,0.7092731583297133,1.5290583284351422], id=0) utils._commonBodySetup(bbb, bbb.shape.volume, bbb.shape.inertia,material='frictionless', pos=[0,0,0], fixed=False) bbb.state.pos =[0.6733279600737498,3.79366976022725,6.1040638685226245] bbb.state.ori=bbb.shape.orientation #bbb.state.ori=Quaternion((0,1,0),pi) O.bodies.append(bbb) #create a polyhedron O.bodies.append(yade.ymport.textPolyhedra(inputfiln, material=gravel, shift=Vector3(0,0,0), scale=1.0)) end of Yade code poly-1.txt file 1 8 9 -1.489228487015 3.0 5.0 -1.489228487015 3.0 7.0 -1.489228487015 5.0 5.0 -0.188776910305 3.349358081818 7.832510948181 2.510771512985 3.0 5.0 2.510771512985 3.0 7.0 2.510771512985 5.0 5.0 2.510771512985 5.0 7.0 1 3 2 7 6 2 7 5 4 6 5 1 0 4 0 2 6 4 5 7 3 1 5 3 3 7 2 0 1 2 -- 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
Re: [Yade-users] [Question #685539]: shape orientation for Potential Block
Question #685539 on Yade changed: https://answers.launchpad.net/yade/+question/685539 Status: Needs information => Open Ali Rafiee gave more information on the question: Hi Vasileios, I just tested this simple example with Yade 20191104-2651 bionic version, but this orientation problem persists still. I try to send you a simple MWS. I have the orientation problem with polyhedron such this one having orthogonal and oblique faces: # 9 ## Number of facets 0.6733279600737498 3.79366976022725 6.1040638685226245 # center of block 0.4233422835886639 -0.0 -1.0 -0.0 -0.0 -0.2544435504552162 -0.0 0.2256157225428006 0.7071067811865475 # a -0.4658182304526213 -1.0 0.0 1.0 -0.0 -0.0 0.2924660204513265 -0.5965652970583126 -0.0# b -0.4658182304526213 0.0 -0.0 -0.0 1.0 -0.8250734563293101 -0.12273156061799324 -0.4512314450856012 -0.0 # c 0.9630391247904834 1.20623023977275 1.83734355291125 0.79356976022725 1.1039638685226245 1.2066387820121347 0.3419810759564882 0.7092731583297133 1.5290583284351422 # d Thanks a lot Best regards Ali -- 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
Re: [Yade-users] [Question #685539]: shape orientation for Potential Block
Question #685539 on Yade changed: https://answers.launchpad.net/yade/+question/685539 Status: Open => Needs information Vasileios Angelidakis requested more information: Hi Ali, Last week we made some improvements in the code, including fixing a bug related to the particle orientation. Can you please compile the latest trunk and let us know if the problem persists? If the matter is not resolved, please send over a Minimal Working Script (MWS) where you define a PB with oblique faces, along with the vertices you used to construct this PB in the first place, so I can compare. Kind regards, Vasileios -- 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
[Yade-users] [Question #685539]: shape orientation for Potential Block
New question #685539 on Yade: https://answers.launchpad.net/yade/+question/685539 Hi everyone, I can't understand the logic of the orientation standards for Potential Block, in particular for blocks with oblique facets. I respected all the explanations from the answers to this question: https://answers.launchpad.net/yade/+question/685375 but I see some problems specially for blocks having oblique facets as for third blocks in the simple example, below. for converting a convex block to PB, I do in this way: 1-compute center of block 2-calculate new vertex coordinates with local center 3-calculate a,b,c,d for all faces 4-(d-chosenR) for all d s what gives me the output data same as below example, but when I try to create PB, it works without problem for (straight) block, but for blocks with oblique faces, they are misdirected. I don't know why? Thanks a lot Best regards Ali a simple example chosenR=0.0001 PB parts #Number of facets # center of block # aax+by+cz+d=0 # b # c # d 6 0.0 3.0 0.0 1.0 -0.0 -1.0 -0.0 -0.0 -0.0 0.0 -1.0 0.0 1.0 -0.0 -0.0 0.0 -0.0 -0.0 -0.0 1.0 -1.0 0. 1. 0. 1. 0. 0. 6 0.0 4.0 3.0 1.0 -0.0 -1.0 -0.0 -0.0 -0.0 0.0 -1.0 0.0 1.0 -0.0 -0.0 0.0 -0.0 -0.0 -0.0 1.0 -1.0 0. 0. 0. 0. 1. 1. 9 0.6733279600737498 3.79366976022725 6.1040638685226245 0.4233422835886639 -0.0 -1.0 -0.0 -0.0 -0.2544435504552162 -0.0 0.2256157225428006 0.7071067811865475 -0.4658182304526213 -1.0 0.0 1.0 -0.0 -0.0 0.2924660204513265 -0.5965652970583126 -0.0 -0.4658182304526213 0.0 -0.0 -0.0 1.0 -0.8250734563293101 -0.12273156061799324 -0.4512314450856012 -0.0 0.9630391247904834 1.20623023977275 1.83734355291125 0.79356976022725 1.1039638685226245 1.2066387820121347 0.3419810759564882 0.7092731583297133 1.5290583284351422 6 0.0 0.0 0.0 1.0 -0.0 -1.0 -0.0 -0.0 -0.0 0.0 -1.0 0.0 1.0 -0.0 -0.0 0.0 -0.0 -0.0 -0.0 1.0 -1.0 1. 0. 1. 0. 0. 0. ### -- 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
