[Yade-users] [Question #403695]: RotationEngine can't work
New question #403695 on Yade: https://answers.launchpad.net/yade/+question/403695 I am trying to model a rigid body consisted by particles which are clumped. And when I try to use RotationEngine to make it rotate, I get a problem. The script is like this: bodylist=[] bodylist.append(O.bodies.append(sphere([0,0,0],1))) for ix in range(0,10): bodylist.append(O.bodies.append(sphere([0.5+ix,0,0],0.5))) bodylist.append(O.bodies.append(sphere([-0.5-ix,0,0],0.5))) for iy in range(0,10): bodylist.append(O.bodies.append(sphere([0,0.5+iy,0],0.5))) bodylist.append(O.bodies.append(sphere([0,-0.5-iy,0],0.5))) idclump=O.bodies.clump(bodylist) q=O.bodies[len(O.bodies)-1] globals()['q']=locals()['q'] O.engines=[ ForceResetter(), InsertionSortCollider([Bo1_Sphere_Aabb(),Bo1_Facet_Aabb()]), InteractionLoop( [Ig2_Sphere_Sphere_L3Geom(),Ig2_Facet_Sphere_L3Geom()], [Ip2_FrictMat_FrictMat_FrictPhys()], [Law2_L3Geom_FrictPhys_ElPerfPl()] ), NewtonIntegrator(gravity=(0,0,-9.8),damping=0.4), RotationEngine(ids=q.id, angularVelocity=1, rotationAxis=(1,1,0), rotateAroundZero=1, zeroPoint=(1,1,1)) ] O.dt=0.05*PWaveTimeStep() When I type the script, the termination notice me a problem before the O.dt. It tells me that : --- TypeError Traceback (most recent call last) /home/dj/yade/install/bin/yade in () 12 rotationAxis=(1,1,0), 13 rotateAroundZero=1, ---> 14 zeroPoint=(1,1,1)) 15 ] TypeError: No registered converter was able to produce a C++ rvalue of type std::vector > from this Python object of type int I type it following the information in your website, and I try some ways but all failed.Can you tell me how to use RotationEngine correctly? Thanks for any suggestions xjin -- 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 #372295]: specific number of spheres in randomDennsePack
Question #372295 on Yade changed: https://answers.launchpad.net/yade/+question/372295 Status: Open => Answered Jérôme Duriez proposed the following answer: Hi, In case you're still facing issues (have you tried this above script and see what it gives ?), you may now refer to https://answers.launchpad.net/yade/+question/403663 Jerome -- 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 #403684]: Access to the global coordinates of polyhedra vertices
Question #403684 on Yade changed: https://answers.launchpad.net/yade/+question/403684 Status: Answered => Solved Ákos Orosz confirmed that the question is solved: Thanks Jan Stránský, that solved my question. -- 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 #403684]: Access to the global coordinates of polyhedra vertices
Question #403684 on Yade changed: https://answers.launchpad.net/yade/+question/403684 Status: Open => Answered Jan Stránský proposed the following answer: Hi Ákos, for single body, you have to multiply the vertex by orientation and add position. It is then easy to do it in a loop. ## b = somePolyhedron pos = b.state.pos ori = b.state.ori for vLocal in b.shape.v: vGlobal = pos + ori*vLocal ### cheers Jan 2016-10-31 21:33 GMT+01:00 Ákos Orosz : > New question #403684 on Yade: > https://answers.launchpad.net/yade/+question/403684 > > Hi all, > > I’m trying to create an oedometric test (yadedaily (2016.06a)), similar to > the tutorial [1] with polyhedral particles. After gravitational deposition, > to put the top plate exactly on the top of the pile, I have to access to > the global coordinates of all vertices of polyhedral particles (and then > find the highest). For this, I used: > > ver=[i.shape.v for i in O.bodies if isinstance(i.shape,Polyhedra)] > > It seems, it returns with local coordinates, instead of globals (as stated > in the docs [2]). Can you help, how to get the global ones? > > Thanks in advance, > Ákos > > [1] https://yade-dem.org/doc/tutorial-examples.html#oedometric-test > [2] https://yade-dem.org/doc/yade.wrapper.html?highlight=v#yade. > wrapper.Polyhedra.v > > > -- > 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 > -- 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 #403684]: Access to the global coordinates of polyhedra vertices
New question #403684 on Yade: https://answers.launchpad.net/yade/+question/403684 Hi all, I’m trying to create an oedometric test (yadedaily (2016.06a)), similar to the tutorial [1] with polyhedral particles. After gravitational deposition, to put the top plate exactly on the top of the pile, I have to access to the global coordinates of all vertices of polyhedral particles (and then find the highest). For this, I used: ver=[i.shape.v for i in O.bodies if isinstance(i.shape,Polyhedra)] It seems, it returns with local coordinates, instead of globals (as stated in the docs [2]). Can you help, how to get the global ones? Thanks in advance, Ákos [1] https://yade-dem.org/doc/tutorial-examples.html#oedometric-test [2] https://yade-dem.org/doc/yade.wrapper.html?highlight=v#yade.wrapper.Polyhedra.v -- 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 #403669]: Uniaxial compression simulation disappeared suddenly in Yade
Question #403669 on Yade changed: https://answers.launchpad.net/yade/+question/403669 Status: Open => Answered Jérôme Duriez proposed the following answer: Hello, Your first error: ** TranslationEngine(translationAxis=(0,0,-1),velocity=(0,0,0.005),id=20), TypeError: No registered converter was able to produce a C++ rvalue of type double from this Python object of type tuple ** is because velocity attribute of TranslationEngine should be a scalar (it's true it's quite surprising and not in the doc). The right syntax is: TranslationEngine(translationAxis=(0,0,-1),velocity=0.005,ids=[20]) # note the list for "ids" attribute (and not id) Anyway, I recommend to follow the method described here: https://yade-dem.org/doc/user.html#imposing-conditions to impose controlled motions, rather than engines such as TranslationEngine You have a second error InsertionSortCollider::spatialOverlapPeri(Body::id_t, Body::id_t, Scene*, Vector3i&) const: Assertion `maxima[3*id2+axis]-minima[3*id2+axis]<.99*dim' failed. * but let's go step by step. Also, it is possible the crash you get in the end: ** Aborted (core dumped) *** comes from another issue. For instance, it is weird you include "Ip2_FrictMat_FrictMat_FrictPhys()" in your InteractionLoop in addition to "Ip2_CohFrictMat_CohFrictMat_CohFrictPhys(..}", even though you do not have any "FrictMat" material properties in your simulation... I'd strongly recommend you closely read https://yade-dem.org/doc/user.html#base-engines (at least..) to understand how to correctly define your engines list. Since you're a beginner and you're facing several issues here (which is normal for a beginner) reading closely the whole "User's manual" part of the doc would obviously be very beneficial. Jerome -- 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 #403663]: Modeling 2 materilas by CPM model
Question #403663 on Yade changed: https://answers.launchpad.net/yade/+question/403663 Seti posted a new comment: Thanks heaps Jan, it is working quite well. -- 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 #403663]: Modeling 2 materilas by CPM model
Question #403663 on Yade changed: https://answers.launchpad.net/yade/+question/403663 Status: Answered => Solved Seti confirmed that the question is solved: Thanks Jan Stránský, that solved my question. -- 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 #403669]: Uniaxial compression simulation disappeared suddenly in Yade
New question #403669 on Yade: https://answers.launchpad.net/yade/+question/403669 Hi, I am a beginning learner of Yade, I performed a uniaxial compression in Yade, but this simulation disappeared suddenly. Can you help me to solve this peoblem? Thanks in advance. My codes is as followings: from yade import pack O.periodic=True O.cell.refSize=(0.05,0.05,0.15) #specify materials for wall & particles spheres=O.materials.append(CohFrictMat(young=5.98e7,density=2.7e3,poisson=0.3,frictionAngle=0.6)) wallMat=O.materials.append(CohFrictMat(young=2.06e17,density=7.9e3,poisson=0.29,frictionAngle=0.8)) O.bodies.append( pack.regularHexa(pack.inAlignedBox((0,0,0),(0.05,0.05,0.15)),radius=0.001,gap=0,color=(0,1,0),material=spheres) ) #creat upper & lower platens from yade import utils O.bodies.append(utils.geom.facetBox((0.025,0.025,0.15),(0.055,0.055,0),wallMask=20,material=wallMat,color=(1,0,1),dynamic=1)) O.bodies.append(utils.geom.facetBox((0.025,0.025,0),(0.055,0.055,0),wallMask=21,material=wallMat,color=(0,0,1),dynamic=0,fixed=1)) #Engines O.engines=[ ForceResetter(), InsertionSortCollider([Bo1_Sphere_Aabb(),Bo1_Box_Aabb()]), InteractionLoop( [Ig2_Sphere_Sphere_ScGeom6D(),Ig2_Box_Sphere_ScGeom6D()], [Ip2_CohFrictMat_CohFrictMat_CohFrictPhys(setCohesionNow=True,setCohesionOnNewContacts=False),Ip2_FrictMat_FrictMat_FrictPhys()], [Law2_ScGeom6D_CohFrictPhys_CohesionMoment()] ), TranslationEngine(translationAxis=(0,0,-1),velocity=(0,0,0.005),id=20), NewtonIntegrator(damping=0.2,gravity=[0,0,-9.81]), VTKRecorder(fileName='post/comp-',recorders=['all'],iterPeriod=100) ] #set a suitable timestep for this simulation O.dt=0.01*PWaveTimeStep() #3D view & controller from yade import qt qt.View() qt.Controller() O.run() And here is the error: huihuang@huihuang-Presario-CQ42-Notebook-PC:~$ cd Desktop/test huihuang@huihuang-Presario-CQ42-Notebook-PC:~/Desktop/test$ yade compression_test.py Welcome to Yade 1.20.0 TCP python prompt on localhost:9002, auth cookie `ykasde' XMLRPC info provider on http://localhost:21002 XmbTextListToTextProperty result code -2 XmbTextListToTextProperty result code -2 XmbTextListToTextProperty result code -2 Running script compression_test.py WARN /build/yade-KKgSmd/yade-1.20.0/core/Cell.hpp:115 setRefSize: Setting Cell.refSize is deprecated, use Cell.setBox(...) instead. Traceback (most recent call last): File "/usr/bin/yade", line 182, in runScript execfile(script,globals()) File "compression_test.py", line 31, in TranslationEngine(translationAxis=(0,0,-1),velocity=(0,0,0.005),id=20), TypeError: No registered converter was able to produce a C++ rvalue of type double from this Python object of type tuple [[ ^L clears screen, ^U kills line. F12 controller, F11 3d view (use h-key for showing help), F10 both, F9 generator, F8 plot. ]] [0;34mYade [[1;34m1[0;34m]: [0mXmbTextListToTextProperty result code -2 XmbTextListToTextProperty result code -2 XmbTextListToTextProperty result code -2 python: /build/yade-KKgSmd/yade-1.20.0/pkg/common/InsertionSortCollider.cpp:493: bool InsertionSortCollider::spatialOverlapPeri(Body::id_t, Body::id_t, Scene*, Vector3i&) const: Assertion `maxima[3*id2+axis]-minima[3*id2+axis]<.99*dim' failed. Aborted (core dumped) -- 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 #403663]: Modeling 2 materilas by CPM model
Question #403663 on Yade changed: https://answers.launchpad.net/yade/+question/403663 Status: Open => Answered Jan Stránský proposed the following answer: Hi Seti, random.random() returns uniform distribution random number in the range (0,1), so random.random()<0.2 means that 0.2=20/100=20% of spheres will have mat1, the rest 80% mat2. You can use of course any other value than 0.2. The indentation error comes from your script, probably from copy-paste process. I will rewrite the code with only spaces (I used tabs originally) co copy-paste again should work. Please try it and let us know. ## from yade import pack import random mat1 = CpmMat() # ... mat2 = CpmMat() # ... sp = pack.randomDensePack(pack.inAlignedBox((0,0,0),(1,1,1)), radius=.05,spheresInCell=500,returnSpherePack=True) sp.toSimulation() for b in O.bodies: if random.random() < 0.2: b.mat = mat1 b.shape.color = (1,0,0) else: b.mat = mat2 b.shape.color = (0,1,1) ## cheers Jan 2016-10-31 13:23 GMT+01:00 Seti : > Question #403663 on Yade changed: > https://answers.launchpad.net/yade/+question/403663 > > Status: Answered => Open > > Seti is still having a problem: > Hi Jan, > > Thanks so much for your reply, would you please let me know what is > meaning of " if random.random() < 0.2:" commend in your example? > > I have tried to do a quick test based on your recommendation, below > error will be pop up related to "if random.random() < 0.2:" line > > "IndentationError: expected an indented block" > > > Cheers, > Seti > > -- > 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 > -- 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 #403663]: Modeling 2 materilas by CPM model
Question #403663 on Yade changed: https://answers.launchpad.net/yade/+question/403663 Status: Answered => Open Seti is still having a problem: Hi Jan, Thanks so much for your reply, would you please let me know what is meaning of " if random.random() < 0.2:" commend in your example? I have tried to do a quick test based on your recommendation, below error will be pop up related to "if random.random() < 0.2:" line "IndentationError: expected an indented block" Cheers, Seti -- 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 #403663]: Modeling 2 materilas by CPM model
Question #403663 on Yade changed: https://answers.launchpad.net/yade/+question/403663 Status: Open => Answered Jan Stránský proposed the following answer: Hi Seti, something like this? ## from yade import pack import random mat1 = CpmMat() # ... mat2 = CpmMat() # ... sp = pack.randomDensePack(pack.inAlignedBox((0,0,0),(1,1,1)),radius=.05,spheresInCell=500,returnSpherePack=True) sp.toSimulation() for b in O.bodies: if random.random() < 0.2: b.mat = mat1 b.shape.color = (1,0,0) else: b.mat = mat2 b.shape.color = (0,1,1) ## cheers Jan 2016-10-31 12:14 GMT+01:00 Seti : > New question #403663 on Yade: > https://answers.launchpad.net/yade/+question/403663 > > Hi All, > > I have the same question which has been asked in Q # 372295. I really > need to know how I can control the percentage of spheres when I am > modelling different materials through CPM model. > > Can you please shed some lights on this issue? > > > Cheers, > Seti > > -- > 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 > -- 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 #403663]: Modeling 2 materilas by CPM model
New question #403663 on Yade: https://answers.launchpad.net/yade/+question/403663 Hi All, I have the same question which has been asked in Q # 372295. I really need to know how I can control the percentage of spheres when I am modelling different materials through CPM model. Can you please shed some lights on this issue? Cheers, Seti -- 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 #403385]: Micro and Macro relation in CPM pararmeters
Question #403385 on Yade changed: https://answers.launchpad.net/yade/+question/403385 Status: Answered => Solved mohsen confirmed that the question is solved: Thanks Jan Stránský, that solved my question. -- 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
