Re: [Yade-users] [Question #452513]: overlapping particle/particle and particle/wall

2017-02-08 Thread Bruno Chareyre
Question #452513 on Yade changed: https://answers.launchpad.net/yade/+question/452513 Bruno Chareyre proposed the following answer: >"is there a way to minimize the overlap?" You can decrease confining pressure or increase material stiffness. The result will be the same both ways:

Re: [Yade-users] [Question #452513]: overlapping particle/particle and particle/wall

2017-02-08 Thread Bruno Chareyre
Question #452513 on Yade changed: https://answers.launchpad.net/yade/+question/452513 Bruno Chareyre proposed the following answer: "decrease confining pressure" should be "decrease gravitational acceleration" in this particular case. I just realized. B -- You re

Re: [Yade-users] [Question #452501]: Status of DFNflow

2017-02-08 Thread Bruno Chareyre
Question #452501 on Yade changed: https://answers.launchpad.net/yade/+question/452501 Status: Open => Answered Bruno Chareyre proposed the following answer: Hello, it is now implemented and functional. This is maybe why it looks like "stopped". I would suggest improve

Re: [Yade-users] [Question #449025]: Capillary model

2017-02-01 Thread Bruno Chareyre
Question #449025 on Yade changed: https://answers.launchpad.net/yade/+question/449025 Bruno Chareyre proposed the following answer: Hi, What Jerôme suggests can be done in a script actually, i.e. adapting the deformation rate to the current stress (with user defined stress calculated

Re: [Yade-users] [Question #446267]: Energy tracking of a two-sphere contact

2017-01-25 Thread Bruno Chareyre
Question #446267 on Yade changed: https://answers.launchpad.net/yade/+question/446267 Status: Open => Answered Bruno Chareyre proposed the following answer: Hi Tijan, I would think 1) is as expected. When adhesion disappears there is still frictional resistance, the elastic force in exc

Re: [Yade-users] [Question #432848]: yade compiled installation in a redhat cluster

2017-01-23 Thread Bruno Chareyre
Question #432848 on Yade changed: https://answers.launchpad.net/yade/+question/432848 Status: Open => Answered Bruno Chareyre proposed the following answer: Hi, You are probably not running the debug build if you don't see more output. Bruno -- You received this question notificat

Re: [Yade-users] [Question #439162]: KeyError: "Unknown energy name 'kineticParticle'

2017-01-17 Thread Bruno Chareyre
Question #439162 on Yade changed: https://answers.launchpad.net/yade/+question/439162 Bruno Chareyre posted a new comment: If I understand the above correctly you are copy/pasting lines selectively from one version to another. Then you end-up with a version that only you have. Good for you

Re: [Yade-users] [Question #429604]: Cylinder and periodic boundary conditions

2017-01-16 Thread Bruno Chareyre
Question #429604 on Yade changed: https://answers.launchpad.net/yade/+question/429604 Status: Open => Answered Bruno Chareyre proposed the following answer: > How do you get the normal component of the relative velocity? Something like this (it would need another term from the ve

Re: [Yade-users] [Question #434659]: the displacement diagram using periodic boundary

2017-01-12 Thread Bruno Chareyre
Question #434659 on Yade changed: https://answers.launchpad.net/yade/+question/434659 Status: Open => Answered Bruno Chareyre proposed the following answer: >how does the periodic boundary apply load in yade By changing the geometry of the periodic space. Arrange a long (infinite)

Re: [Yade-users] [Question #429604]: Cylinder and periodic boundary conditions

2017-01-11 Thread Bruno Chareyre
Question #429604 on Yade changed: https://answers.launchpad.net/yade/+question/429604 Status: Open => Answered Bruno Chareyre proposed the following answer: > I also want the normal one Very easy to find. Will you really waste cpu time in calculating the incident shear twice wh

Re: [Yade-users] [Question #434659]: the displacement diagram using periodic boundary

2017-01-11 Thread Bruno Chareyre
Question #434659 on Yade changed: https://answers.launchpad.net/yade/+question/434659 Status: Open => Answered Bruno Chareyre proposed the following answer: >coordinate as (0,0,0) and use the maximum coordinate as (1,1,1), even if the values of minimum coordiante and maximum >c

Re: [Yade-users] [Question #434659]: the displacement diagram using periodic boundary

2017-01-11 Thread Bruno Chareyre
Question #434659 on Yade changed: https://answers.launchpad.net/yade/+question/434659 Status: Open => Answered Bruno Chareyre proposed the following answer: Hi, I don't think you need evidence about that for writting a paper: the problem you are pointing out simply does not exist, so

Re: [Yade-users] [Question #429604]: Cylinder and periodic boundary conditions

2017-01-05 Thread Bruno Chareyre
Question #429604 on Yade changed: https://answers.launchpad.net/yade/+question/429604 Status: Open => Answered Bruno Chareyre proposed the following answer: My Christmas gift below. :) The cylinders are ok in periodic boundary conditions overall. It has been applied to sheared fi

Re: [Yade-users] [Question #406523]: Cylinders and law2_ScGeom_ViscElPhys_Basic

2017-01-05 Thread Bruno Chareyre
Question #406523 on Yade changed: https://answers.launchpad.net/yade/+question/406523 Bruno Chareyre posted a new comment: Sounds good. :) -- You received this question notification because your team yade-users is an answer contact for Yade

Re: [Yade-users] [Question #406523]: Cylinders and law2_ScGeom_ViscElPhys_Basic

2017-01-04 Thread Bruno Chareyre
Question #406523 on Yade changed: https://answers.launchpad.net/yade/+question/406523 Status: Open => Answered Bruno Chareyre proposed the following answer: I did not mean that a cylinder was "made of" spheres, a cylinder IS a sphere. Lets define a sphere as something which

Re: [Yade-users] [Question #406523]: Cylinders and law2_ScGeom_ViscElPhys_Basic

2017-01-03 Thread Bruno Chareyre
Question #406523 on Yade changed: https://answers.launchpad.net/yade/+question/406523 Bruno Chareyre posted a new comment: Hi Raphael, Quick answer to your last point: it is not a problem to "evaluate the kn, ks, cn and cs from the young, poisson, en and es" between spheres and cylind

Re: [Yade-users] [Question #406523]: Cylinders and law2_ScGeom_ViscElPhys_Basic

2016-12-19 Thread Bruno Chareyre
Question #406523 on Yade changed: https://answers.launchpad.net/yade/+question/406523 Status: Open => Answered Bruno Chareyre proposed the following answer: A cause of the trouble is that the function cylinder(begin = (0,0,0),...) is by itself creating an interaction between the node

Re: [Yade-users] [Question #406523]: Cylinders and law2_ScGeom_ViscElPhys_Basic

2016-12-09 Thread Bruno Chareyre
Question #406523 on Yade changed: https://answers.launchpad.net/yade/+question/406523 Status: Open => Needs information Bruno Chareyre requested more information: Very strange... Yade [2]: for b in O.bodies: ...: print b.material ...: Did you find which obj

Re: [Yade-users] [Question #406578]: TesselationWrapper for 2d case

2016-12-09 Thread Bruno Chareyre
Question #406578 on Yade changed: https://answers.launchpad.net/yade/+question/406578 Status: Open => Answered Bruno Chareyre proposed the following answer: Hi Jiaying, I never tried that specifically but I don't anticipate special difficulties. Did you find a problem? Bruno --

Re: [Yade-users] [Question #406523]: Cylinders and law2_ScGeom_ViscElPhys_Basic

2016-12-08 Thread Bruno Chareyre
Question #406523 on Yade changed: https://answers.launchpad.net/yade/+question/406523 Status: Open => Answered Bruno Chareyre proposed the following answer: >Am I right if I say that cylinders are not independant objects and are made of gridConnection and gridNode ? If yes, is there a

Re: [Yade-users] [Question #404520]: hollow glass sphere modeling using pfacet as a filler in cement paste

2016-12-01 Thread Bruno Chareyre
Question #404520 on Yade changed: https://answers.launchpad.net/yade/+question/404520 Status: Open => Answered Bruno Chareyre proposed the following answer: Hi, [1] is along the line I was mentioning, yes. Getting the total force on the indenter will just need to sum the forces on ev

Re: [Yade-users] [Question #404550]: import particles to another script

2016-12-01 Thread Bruno Chareyre
Question #404550 on Yade changed: https://answers.launchpad.net/yade/+question/404550 Status: Open => Answered Bruno Chareyre proposed the following answer: Hello, the easiest solution is to not import. Why do you need to switch to another script instead of just one? I see plenty us

Re: [Yade-users] [Question #404534]: Control edge length in Tesselation Wrapper?

2016-12-01 Thread Bruno Chareyre
Question #404534 on Yade changed: https://answers.launchpad.net/yade/+question/404534 Status: Open => Answered Bruno Chareyre proposed the following answer: Hi Luc, The cure to this disease is called "alpha shape", I have work in progress about that [1] but it is still

Re: [Yade-users] [Question #404513]: Is there any possibility that GPU be apllied in the calculation of YADE?

2016-11-30 Thread Bruno Chareyre
Question #404513 on Yade changed: https://answers.launchpad.net/yade/+question/404513 Bruno Chareyre proposed the following answer: > GPU implementation is almost impossible for YADE Not sure what it really means. If someone was going for GPU he would have to be prepared for big chan

Re: [Yade-users] [Question #404513]: Is there any possibility that GPU be apllied in the calculation of YADE?

2016-11-30 Thread Bruno Chareyre
Question #404513 on Yade changed: https://answers.launchpad.net/yade/+question/404513 Status: Open => Answered Bruno Chareyre proposed the following answer: Hello, To the first question the answer is of course "yes". Unfortunately it is difficult (for me at least) to answer t

Re: [Yade-users] [Question #404455]: damping in ViscElMat

2016-11-29 Thread Bruno Chareyre
Question #404455 on Yade changed: https://answers.launchpad.net/yade/+question/404455 Bruno Chareyre proposed the following answer: The porosity at equilibrium is not single valued, it is a range of possible porosities. Which one is reached along a particular loading path depends on every

Re: [Yade-users] [Question #404363]: porosity calculation for clumps

2016-11-24 Thread Bruno Chareyre
Question #404363 on Yade changed: https://answers.launchpad.net/yade/+question/404363 Status: Open => Answered Bruno Chareyre proposed the following answer: Hi Bettina, You find out that the volume(or mass) of the clump is calculated correctly (your third value). The poros

Re: [Yade-users] [Question #404328]: contact position at the end of the simulation

2016-11-24 Thread Bruno Chareyre
Question #404328 on Yade changed: https://answers.launchpad.net/yade/+question/404328 Bruno Chareyre proposed the following answer: Hi, Another quick comment. Using a PyRunner is a bit overkill for this particular need. If you want to run 5000 then export (Jan suggested that already but it you

Re: [Yade-users] [Question #404135]: intRadius(aabbenlargefactor) doesn't work

2016-11-17 Thread Bruno Chareyre
Question #404135 on Yade changed: https://answers.launchpad.net/yade/+question/404135 Bruno Chareyre posted a new comment: >"YADE graphical user interface offers a sub-step option (just check the corresponding box) that may allow you to check if the distant interaction exists at some poin

Re: [Yade-users] [Question #404135]: intRadius(aabbenlargefactor) doesn't work

2016-11-17 Thread Bruno Chareyre
Question #404135 on Yade changed: https://answers.launchpad.net/yade/+question/404135 Status: Open => Answered Bruno Chareyre proposed the following answer: Hi, > 1. Why is contact detection rely on mechanical behavior(In this case different normalCohesion value affect interaction

Re: [Yade-users] [Question #404135]: intRadius(aabbenlargefactor) doesn't work

2016-11-17 Thread Bruno Chareyre
Question #404135 on Yade changed: https://answers.launchpad.net/yade/+question/404135 Bruno Chareyre posted a new comment: >Thus one possible trick is to set high cohesion to create the ints, then set the relevant interaction->adhesion at the next step within a loop. I forgot to add

Re: [Yade-users] Yade installation questions

2016-11-15 Thread Bruno Chareyre
Dear David, Please use launchpad questions next time, instead of plain emails (*). On 11/15/2016 03:45 PM, Baker D.J. wrote: Gl1_Sphere attribute/command. Is that because I build Yade with GUI=OFF? Yes. "Gl" refers to openGL, hence graphical environment. It should be removed on users side.

Re: [Yade-users] [Question #403713]: friction damping under different contact law

2016-11-14 Thread Bruno Chareyre
Question #403713 on Yade changed: https://answers.launchpad.net/yade/+question/403713 Bruno Chareyre proposed the following answer: Newton::damping should not be used at all if you are interested in granular flow (that is, not just quasistatic evolutions). hence no need to think about

Re: [Yade-users] [Question #403901]: Sample of pre-defined shaped particles

2016-11-09 Thread Bruno Chareyre
Question #403901 on Yade changed: https://answers.launchpad.net/yade/+question/403901 Bruno Chareyre proposed the following answer: Hi Bruna, Alternatively, it is possible is to place the particles one by one https://github.com/yade/trunk/blob/master/examples/triax-tutorial/script-session1.py

Re: [Yade-users] [Question #403764]: How to stop YADE from exiting automatically on PBS?

2016-11-03 Thread Bruno Chareyre
Question #403764 on Yade changed: https://answers.launchpad.net/yade/+question/403764 Bruno Chareyre proposed the following answer: Note that for the same reason your script is weird - at least unpredictable - independently of PBS: O.run() def addData(): [...] O.saveTmp() If you are lucky

Re: [Yade-users] [Question #403764]: How to stop YADE from exiting automatically on PBS?

2016-11-03 Thread Bruno Chareyre
Question #403764 on Yade changed: https://answers.launchpad.net/yade/+question/403764 Bruno Chareyre proposed the following answer: As Jerome guessed, O.run() was the problem. "O.run()" means to python, almost, "spawn an independant process running DEM in the background and r

Re: [Yade-users] [Question #403744]: Cohesive and viscous-elastic contact law

2016-11-03 Thread Bruno Chareyre
Question #403744 on Yade changed: https://answers.launchpad.net/yade/+question/403744 Status: Open => Answered Bruno Chareyre proposed the following answer: Hi, No, as far as I know. There is no law functor combining adhesion with this type of viscous damping. Bruno -- You recei

Re: [Yade-users] [Question #403426]: how to compute the shear strain

2016-10-26 Thread Bruno Chareyre
Question #403426 on Yade changed: https://answers.launchpad.net/yade/+question/403426 Status: Open => Answered Bruno Chareyre proposed the following answer: Not sure about the sign problem you see. The 0.5 is because the normal contact spin is obtained by averaging bodies spin. Br

Re: [Yade-users] [Question #403469]: How to set the damping coefficient of a crowd of powders

2016-10-26 Thread Bruno Chareyre
Question #403469 on Yade changed: https://answers.launchpad.net/yade/+question/403469 Status: Open => Answered Bruno Chareyre proposed the following answer: >"your meaning that there is no physical damping" I meant that NewtonIntegrator::damping is a numerical trick to slow

Re: [Yade-users] [Question #403385]: Micro and Macro relation in CPM pararmeters

2016-10-25 Thread Bruno Chareyre
Question #403385 on Yade changed: https://answers.launchpad.net/yade/+question/403385 Bruno Chareyre proposed the following answer: Actually no, the micro-macro relations can always be put in a way such that they do NOT depend on particle sizes. In Yade, at least, it is the case

Re: [Yade-users] [Question #403469]: How to set the damping coefficient of a crowd of powders

2016-10-25 Thread Bruno Chareyre
Question #403469 on Yade changed: https://answers.launchpad.net/yade/+question/403469 Bruno Chareyre posted a new comment: I meant to make damping zero after the initial deposit is stable. If yo umake it zero from the beginning the gravitational deposition will take ages. -- You received

Re: [Yade-users] [Question #403469]: How to set the damping coefficient of a crowd of powders

2016-10-25 Thread Bruno Chareyre
Question #403469 on Yade changed: https://answers.launchpad.net/yade/+question/403469 Status: Open => Answered Bruno Chareyre proposed the following answer: Hi, I would suggest to make Newton's damping 0 in such case, since it is not a physical damping. The question is if you need damp

Re: [Yade-users] [Question #403426]: how to compute the shear strain

2016-10-25 Thread Bruno Chareyre
Question #403426 on Yade changed: https://answers.launchpad.net/yade/+question/403426 Bruno Chareyre posted a new comment: I forgot a multiplication by △t in the above equations. Let "v" be the rotation increment equal to spin times △t and the equations are correct. -- Yo

Re: [Yade-users] [Question #403385]: Micro and Macro relation in CPM pararmeters

2016-10-25 Thread Bruno Chareyre
Question #403385 on Yade changed: https://answers.launchpad.net/yade/+question/403385 Bruno Chareyre proposed the following answer: Hi, Short answer: There is indeed no simple relationship between ks/kn and the material parameter called Poisson, but a dependency does exist (with both the solid

Re: [Yade-users] [Question #403426]: how to compute the shear strain

2016-10-25 Thread Bruno Chareyre
Question #403426 on Yade changed: https://answers.launchpad.net/yade/+question/403426 Status: Open => Answered Bruno Chareyre proposed the following answer: Hi, I understand the meaning my not be immediate but it is actually relatively simple. Let w be the spin vector of the grain p

Re: [Yade-users] [Question #403204]: position of spheres in periodic cell

2016-10-21 Thread Bruno Chareyre
Question #403204 on Yade changed: https://answers.launchpad.net/yade/+question/403204 Status: Open => Answered Bruno Chareyre proposed the following answer: PBC are a bit complicated to explain. Please make sure to read the documentation on PBC and if something is still not clear be speci

Re: [Yade-users] [Question #403166]: Code availability of Yuan2016, Sweijen2016

2016-10-20 Thread Bruno Chareyre
Question #403166 on Yade changed: https://answers.launchpad.net/yade/+question/403166 Status: Open => Answered Bruno Chareyre proposed the following answer: Hi, The code is available, yes. I think it will be available in a more user-friendly shape in less than a year when both d

Re: [Yade-users] [Question #403204]: position of spheres in periodic cell

2016-10-20 Thread Bruno Chareyre
Question #403204 on Yade changed: https://answers.launchpad.net/yade/+question/403204 Status: Open => Answered Bruno Chareyre proposed the following answer: Hi, 1) gives the absolute position as it is memory, it can be anywhere in unbounded infinite 3D space 2) gives for each particle

Re: [Yade-users] [Question #402989]: exporting the file of properties of spheres in simulation

2016-10-14 Thread Bruno Chareyre
Question #402989 on Yade changed: https://answers.launchpad.net/yade/+question/402989 Status: Open => Answered Bruno Chareyre proposed the following answer: Thanks for details Hien. > My other advice is to save anyway the full model (xml.gz) Sorry but... the "xml.gz" pa

Re: [Yade-users] [Question #402989]: exporting the file of properties of spheres in simulation

2016-10-13 Thread Bruno Chareyre
Question #402989 on Yade changed: https://answers.launchpad.net/yade/+question/402989 Status: Open => Answered Bruno Chareyre proposed the following answer: There are plenty ways to do that, yes. I suggest to first clarify which data you need, and for instance to write a loop to pr

Re: [Yade-users] [Question #402893]: Ids order in O.interactions

2016-10-11 Thread Bruno Chareyre
Question #402893 on Yade changed: https://answers.launchpad.net/yade/+question/402893 Bruno Chareyre proposed the following answer: The force is always applied by i.id1 on i.id2. No need to use the normal. Does it answer your question? -- You received this question notification because your

Re: [Yade-users] [Question #402893]: Ids order in O.interactions

2016-10-10 Thread Bruno Chareyre
Question #402893 on Yade changed: https://answers.launchpad.net/yade/+question/402893 Status: Open => Answered Bruno Chareyre proposed the following answer: Hi Nejib, there is no convention. The fact that O.interactions[x,y] is the same as O.interactions[y,x] is a desirable feature, is

Re: [Yade-users] [Question #402828]: Control the normal stress fluctuation in the direct shear box modeling

2016-10-07 Thread Bruno Chareyre
Question #402828 on Yade changed: https://answers.launchpad.net/yade/+question/402828 Status: Open => Answered Bruno Chareyre proposed the following answer: One possible strategy is to simply impose a force on the top plate and let it equilibrate (it needs to have a mass). Is is sim

Re: [Yade-users] [Question #402752]: Geometry law between a sphere and a wall for the cohesive frictional law

2016-10-06 Thread Bruno Chareyre
Question #402752 on Yade changed: https://answers.launchpad.net/yade/+question/402752 Status: Open => Answered Bruno Chareyre proposed the following answer: Ok. So, first of all, I think Walls are not very commonly used and not all families of functors may handle them. namely, ScGeom6D d

Re: [Yade-users] [Question #402752]: Geometry law between a sphere and a wall for the cohesive frictional law

2016-10-06 Thread Bruno Chareyre
Question #402752 on Yade changed: https://answers.launchpad.net/yade/+question/402752 Status: Open => Needs information Bruno Chareyre requested more information: Hi, Your question is about walls but your script introduces facets. Could you clarify the question? -- You recei

Re: [Yade-users] [Question #402655]: How many digits is the significant figure of the position?

2016-10-01 Thread Bruno Chareyre
Question #402655 on Yade changed: https://answers.launchpad.net/yade/+question/402655 Status: Open => Answered Bruno Chareyre proposed the following answer: Approximately 16 (more precisely 15.95) digits for double precision format. Bruno -- You received this question notification beca

Re: [Yade-users] [Question #402426]: fill a box with polyhedra with size distribution (psdSizes, psdCumm )

2016-09-29 Thread Bruno Chareyre
Question #402426 on Yade changed: https://answers.launchpad.net/yade/+question/402426 Status: Open => Answered Bruno Chareyre proposed the following answer: Hi, If you mean a makeCloud function specialized for polyhedra I would say no. But actually you can use makeCloud to generate a sph

Re: [Yade-users] [Question #372306]: Stability of PFV

2016-09-14 Thread Bruno Chareyre
Question #372306 on Yade changed: https://answers.launchpad.net/yade/+question/372306 Bruno Chareyre posted a new comment: Hi Benoit, The stability problem is explained in E. Catalano PhD, where an expression of the stability condition is derived. The time step depends linearly (iirc

Re: [Yade-users] [Question #384899]: VoxelPorosity

2016-09-08 Thread Bruno Chareyre
Question #384899 on Yade changed: https://answers.launchpad.net/yade/+question/384899 Status: Open => Answered Bruno Chareyre proposed the following answer: Did you make basic checks like: how many spheres remain after removal? where are they located? what is their radius? Most lik

Re: [Yade-users] [Question #239596]: FlowEngine is not defined in yade-daily - On Ubuntu 13.10

2016-09-06 Thread Bruno Chareyre
Question #239596 on Yade changed: https://answers.launchpad.net/yade/+question/239596 Bruno Chareyre posted a new comment: Hi Son, Modifying the source code to escape a compile error is the best starting point for big troubles. If you have compile errors please fill a bug report (this problem

Re: [Yade-users] [Question #314841]: Cannot figure out how to use 2D TriaxialStressController

2016-08-02 Thread Bruno Chareyre
Question #314841 on Yade changed: https://answers.launchpad.net/yade/+question/314841 Bruno Chareyre proposed the following answer: Hi, Imposing zero stress can be a problem when the sample-boundary contacts have no tensile strength (the typical case). This is because no contact at all satisfy

Re: [Yade-users] [Question #313437]: The relationship between stress tensor and stress vector

2016-07-31 Thread Bruno Chareyre
Question #313437 on Yade changed: https://answers.launchpad.net/yade/+question/313437 Status: Open => Answered Bruno Chareyre proposed the following answer: Hi, getStress gives an ordinary 3x3 tensor, not 6x6. Bruno -- You received this question notification because your team yade-us

Re: [Yade-users] [Question #309164]: Plan with no interactions

2016-07-29 Thread Bruno Chareyre
Question #309164 on Yade changed: https://answers.launchpad.net/yade/+question/309164 Status: Open => Answered Bruno Chareyre proposed the following answer: Hi Bruna, You could always add a plane, get force, then reload the state before adding the plane and continue. But overall it does

Re: [Yade-users] [Question #298001]: Input Kn and Ks directly

2016-07-20 Thread Bruno Chareyre
Question #298001 on Yade changed: https://answers.launchpad.net/yade/+question/298001 Bruno Chareyre posted a new comment: > Is there any paper/thesis/publication that discusses this advantage of YADE's formulation? It is mentioned in many of our papers but it is never the main topic; I do

Re: [Yade-users] [Question #295810]: CPM contact parameters (stiffness & friction angle)

2016-06-30 Thread Bruno Chareyre
Question #295810 on Yade changed: https://answers.launchpad.net/yade/+question/295810 Status: Open => Answered Bruno Chareyre proposed the following answer: Hello, MatchMakers are definitely the answer to your question. It is not possible to hardcode in the source code, in advance, ev

Re: [Yade-users] [Question #295814]: MatchTracker for Cohesion

2016-06-30 Thread Bruno Chareyre
Question #295814 on Yade changed: https://answers.launchpad.net/yade/+question/295814 Status: Open => Answered Bruno Chareyre proposed the following answer: Hi Seti, I suggest having a look at those guidelines, especially points 2,3 and 6: https://yade-dem.org/wiki/Howtoask Bruno --

Re: [Yade-users] [Question #295745]: Do bending or twisting moment contribute to cohesive bond breakage ?

2016-06-30 Thread Bruno Chareyre
Question #295745 on Yade changed: https://answers.launchpad.net/yade/+question/295745 Bruno Chareyre proposed the following answer: Yes. -- You received this question notification because your team yade-users is an answer contact for Yade

Re: [Yade-users] [Question #295745]: Do bending or twisting moment contribute to cohesive bond breakage ?

2016-06-29 Thread Bruno Chareyre
Question #295745 on Yade changed: https://answers.launchpad.net/yade/+question/295745 Status: Open => Answered Bruno Chareyre proposed the following answer: Hi, The contact moments can have upper bounds (strength) but for the moment the upper bound can only take the form Mmax=a*Fn wh

Re: [Yade-users] [Question #295685]: the difference between ScGeom and L3Geom

2016-06-27 Thread Bruno Chareyre
Question #295685 on Yade changed: https://answers.launchpad.net/yade/+question/295685 Status: Open => Answered Bruno Chareyre proposed the following answer: Hi, L3Geom is unmaintained and it has known bugs. Better don't use it. That is the first and main difference. Bruno -- You recei

Re: [Yade-users] [Question #295666]: dense sample/triaxial test

2016-06-27 Thread Bruno Chareyre
Question #295666 on Yade changed: https://answers.launchpad.net/yade/+question/295666 Status: Open => Answered Bruno Chareyre proposed the following answer: I suggest a look at the triax tutorial. It is doing what you ask in a better way (the exact density can be prescribed). Bruno ht

Re: [Yade-users] [Question #295587]: Box Free Oscillation

2016-06-24 Thread Bruno Chareyre
Question #295587 on Yade changed: https://answers.launchpad.net/yade/+question/295587 Bruno Chareyre proposed the following answer: Yes, in fact the "Box" class is practically handling thick planes, not boxes, in the sense that they can't contain anything. Sphere inside box is an a

Re: [Yade-users] [Question #295592]: Problems for allowBiggerThanPeriod

2016-06-24 Thread Bruno Chareyre
Question #295592 on Yade changed: https://answers.launchpad.net/yade/+question/295592 Bruno Chareyre proposed the following answer: > is there any possible for applying large deformation? I mean shear a sample without ceasing. I assume you refer to true 3-periodic boundary conditi

Re: [Yade-users] [Question #295521]: contact-normal in Yade

2016-06-23 Thread Bruno Chareyre
Question #295521 on Yade changed: https://answers.launchpad.net/yade/+question/295521 Status: Open => Answered Bruno Chareyre proposed the following answer: >I am afraid that this method may get fabric tensor calculation into trouble. Fabric tensor is based on squared normal, so the p

Re: [Yade-users] [Question #295592]: Problems for allowBiggerThanPeriod

2016-06-23 Thread Bruno Chareyre
Question #295592 on Yade changed: https://answers.launchpad.net/yade/+question/295592 Status: Open => Answered Bruno Chareyre proposed the following answer: Hi, > allowBiggerThanPeriod can be used for large deformation Absolutely not, as you find. This is for large bodies, not

Re: [Yade-users] [Question #295520]: Exception occured: std::bad_alloc

2016-06-21 Thread Bruno Chareyre
Question #295520 on Yade changed: https://answers.launchpad.net/yade/+question/295520 Bruno Chareyre proposed the following answer: There should not be any memory cost for this function. Why is there an indentation before "O" in: ### add top box O.bodies.append(utils.box(ce

Re: [Yade-users] [Question #295218]: Can't load the Launchpad of Yade

2016-06-13 Thread Bruno Chareyre
Question #295218 on Yade changed: https://answers.launchpad.net/yade/+question/295218 Bruno Chareyre proposed the following answer: It was down for a few hours indeed, then fixed before Jérôme tested it. B -- You received this question notification because your team yade-users is an answer

Re: [Yade-users] [Question #295158]: Can we create a rigid body using only particles, rather than importing a gts surface.

2016-06-13 Thread Bruno Chareyre
Question #295158 on Yade changed: https://answers.launchpad.net/yade/+question/295158 Bruno Chareyre proposed the following answer: > A ball made up of spheres, bouncing in a box, which is also made of spheres. Bullet made up of spheres hitting a concrete wall composed of spheres. Yes of cou

Re: [Yade-users] [Question #295035]: Use of i.phys.unp to get null forces initially

2016-06-09 Thread Bruno Chareyre
Question #295035 on Yade changed: https://answers.launchpad.net/yade/+question/295035 Bruno Chareyre proposed the following answer: >So should unp be changed after few iterations, to get more accurate normal contact force Certainly not. Why would it be "more accurate"?! B --

Re: [Yade-users] [Question #295035]: Use of i.phys.unp to get null forces initially

2016-06-08 Thread Bruno Chareyre
Question #295035 on Yade changed: https://answers.launchpad.net/yade/+question/295035 Status: Open => Answered Bruno Chareyre proposed the following answer: Hi, I just updated the doc but it is not visible in the online pages yet. The normal force in the first equation of the documentat

Re: [Yade-users] [Question #294519]: Forcing InsertionSortCollider execution

2016-06-07 Thread Bruno Chareyre
Question #294519 on Yade changed: https://answers.launchpad.net/yade/+question/294519 Bruno Chareyre posted a new comment: >it is not possible to actually update verletDist during the simulation It is possible of course. The main problem is that the collider is smart: if the grains do not m

Re: [Yade-users] [Question #294958]: meniscus fusion

2016-06-06 Thread Bruno Chareyre
Question #294958 on Yade changed: https://answers.launchpad.net/yade/+question/294958 Status: Open => Answered Bruno Chareyre proposed the following answer: Yes you are right. However, the maximum saturation is more around 5% if I remember correctly. Bruno -- You received this quest

Re: [Yade-users] [Question #294845]: Multicore Yade

2016-06-06 Thread Bruno Chareyre
Question #294845 on Yade changed: https://answers.launchpad.net/yade/+question/294845 Bruno Chareyre proposed the following answer: Hi Pavel, Yade has profiling features which should be useful in your case. Please see https://yade-dem.org/doc/prog.html#timing Until now I would follow Anton

Re: [Yade-users] [Question #293955]: How to generate dense packing of aggregates

2016-06-02 Thread Bruno Chareyre
Question #293955 on Yade changed: https://answers.launchpad.net/yade/+question/293955 Bruno Chareyre posted a new comment: Please, one question at a time. If this one is answered mark it closed. If you have other questions open them as new questions. Bruno -- You received this question

Re: [Yade-users] [Question #294529]: random orientation of chained cylinders

2016-05-30 Thread Bruno Chareyre
Question #294529 on Yade changed: https://answers.launchpad.net/yade/+question/294529 Bruno Chareyre requested more information: Hi, The initial properties of your fiber distribution should be defined more precisely before any concrete implementation can be conceived, seems to me. For instance

Re: [Yade-users] [Question #294519]: Forcing InsertionSortCollider execution

2016-05-27 Thread Bruno Chareyre
Question #294519 on Yade changed: https://answers.launchpad.net/yade/+question/294519 Bruno Chareyre posted a new comment: Hi Jérôme, Setting verletDist=0 will make the collider run at each iteration. Does it really do something with runEngine? I would expect the collider to just return

Re: [Yade-users] [Question #293758]: handling post-breakage rolling in a cohesive contact

2016-05-20 Thread Bruno Chareyre
Question #293758 on Yade changed: https://answers.launchpad.net/yade/+question/293758 Bruno Chareyre posted a new comment: "If you don't understand" -> "I don't understand" A weird auto-completion got me there. -- You received this question notification becau

Re: [Yade-users] [Question #293758]: handling post-breakage rolling in a cohesive contact

2016-05-20 Thread Bruno Chareyre
Question #293758 on Yade changed: https://answers.launchpad.net/yade/+question/293758 Status: Open => Answered Bruno Chareyre proposed the following answer: Hi, > if the shearForce.norm() > shearAdhesion, break the cohesion and now as the friction angle is bigger, the movemen

Re: [Yade-users] [Question #293445]: Polyhedra Elements, Infinite Loop.

2016-05-11 Thread Bruno Chareyre
Question #293445 on Yade changed: https://answers.launchpad.net/yade/+question/293445 Status: Open => Needs information Bruno Chareyre requested more information: Hi, Thanks for the script but in fact it does not show the bug, since you add "After calling O.step() for sever

Re: [Yade-users] [Question #293295]: Want to connect all the particles in an aggregate using cohesive bond

2016-05-11 Thread Bruno Chareyre
Question #293295 on Yade changed: https://answers.launchpad.net/yade/+question/293295 Bruno Chareyre proposed the following answer: Changing the adhesion of existing interactions is not a problem at all. After the first iteration: i.phys.normalAdhesion = something i.phys.shearAdhesion = another

Re: [Yade-users] [Question #293096]: incrememntal compression with engine

2016-05-03 Thread Bruno Chareyre
Question #293096 on Yade changed: https://answers.launchpad.net/yade/+question/293096 Status: Open => Answered Bruno Chareyre proposed the following answer: If I understand correctly you suggest that this loop is not doing anything: for i in range(0,int(-1e-6*stress_max)): if (

Re: [Yade-users] [Question #292663]: capillary pressure

2016-04-29 Thread Bruno Chareyre
Question #292663 on Yade changed: https://answers.launchpad.net/yade/+question/292663 Bruno Chareyre posted a new comment: Thanks Christian, useful answer for me to. We definitely need to consolidate this interpolation part and make it more self contained (dropping the data files download

Re: [Yade-users] [Question #290950]: Particles crossing the wall

2016-04-27 Thread Bruno Chareyre
Question #290950 on Yade changed: https://answers.launchpad.net/yade/+question/290950 Bruno Chareyre posted a new comment: @Jérôme: the workaround is to not have interactions with the large body at step 0 -- You received this question notification because your team yade-users is an answer

Re: [Yade-users] [Question #290950]: Particles crossing the wall

2016-04-25 Thread Bruno Chareyre
Question #290950 on Yade changed: https://answers.launchpad.net/yade/+question/290950 Status: Open => Answered Bruno Chareyre proposed the following answer: You found a known bug for large objects in periodic simulations. The bug seems to show up especially when some interactions ex

Re: [Yade-users] [Question #291538]: triaxial test:Law2_ScGeom_FrictPhys_CundallStrack

2016-04-21 Thread Bruno Chareyre
Question #291538 on Yade changed: https://answers.launchpad.net/yade/+question/291538 Bruno Chareyre posted a new comment: Please don't ask the same question multiple times (actually there is not even a question in this one ;) ). If you don't receive answers you may check (especially point 3

Re: [Yade-users] [Question #290070]: TesselationWrapper and porosity

2016-04-18 Thread Bruno Chareyre
Question #290070 on Yade changed: https://answers.launchpad.net/yade/+question/290070 Status: Open => Answered Bruno Chareyre proposed the following answer: b.volume=TW.volume(b.id) is not the same in terms of scope, and the problems you have are mainly scope problems. >"The ques

Re: [Yade-users] [Question #290070]: TesselationWrapper and porosity

2016-04-11 Thread Bruno Chareyre
Question #290070 on Yade changed: https://answers.launchpad.net/yade/+question/290070 Bruno Chareyre proposed the following answer: It must be a scope issue, try something around globals()["TW"].volume(id)? Else it should be possible to add the attribute: b.volume=TW.volume(b.id)

Re: [Yade-users] [Question #290070]: TesselationWrapper and porosity

2016-04-07 Thread Bruno Chareyre
Question #290070 on Yade changed: https://answers.launchpad.net/yade/+question/290070 Bruno Chareyre proposed the following answer: I am assuming that you know how to export any value attached to particles using VTK exporter (else please see the doc, this one is well documented). Then the only

Re: [Yade-users] [Question #289169]: How can I get local fluxes in flowEngine ?

2016-03-25 Thread Bruno Chareyre
Question #289169 on Yade changed: https://answers.launchpad.net/yade/+question/289169 Status: Open => Answered Bruno Chareyre proposed the following answer: There is a c++ function which assign the average velocity of each cell. FlowBoundingSphere.ipp:96 void FlowBoundingSph

Re: [Yade-users] [Question #288586]: Can Yade run on GPU?

2016-03-14 Thread Bruno Chareyre
Question #288586 on Yade changed: https://answers.launchpad.net/yade/+question/288586 Status: Open => Answered Bruno Chareyre proposed the following answer: Hello, No, there is no GPU support. Bruno -- You received this question notification because your team yade-users is an ans

Re: [Yade-users] [Question #288118]: What does the list returned by getConstrictionsFull() stands for in FlowEngine() ?

2016-03-10 Thread Bruno Chareyre
Question #288118 on Yade changed: https://answers.launchpad.net/yade/+question/288118 Bruno Chareyre proposed the following answer: My mistake, sorry. You can now update: cd trunk git pull cd [buildDir] make install -- You received this question notification because your team yade-users

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