Re: [Yade-users] [Question #663441]: some modules fail to be loaded when i call a class from a python file

2018-01-24 Thread Bruno Chareyre
Question #663441 on Yade changed: https://answers.launchpad.net/yade/+question/663441 Status: Open => Answered Bruno Chareyre proposed the following answer: Could you please narrow down the problem by yourself (it may explain why you don't have much replies)? For instance, is the prob

Re: [Yade-users] [Question #663143]: Grid connections error/bug?

2018-01-19 Thread Bruno Chareyre
Question #663143 on Yade changed: https://answers.launchpad.net/yade/+question/663143 Bruno Chareyre proposed the following answer: Here is the list of initial interactions (iteration 0, ), * for the x-aligned beam: Yade [1]: for i in O.interactions: print i.id1,i.id2,i.phys.normalForce

Re: [Yade-users] [Question #662276]: yade --check

2018-01-19 Thread Bruno Chareyre
Question #662276 on Yade changed: https://answers.launchpad.net/yade/+question/662276 Bruno Chareyre proposed the following answer: Back to the original statement: "Qin= -7.87821707663e-07 Qout= 7.87395513513e-07.>>>>> Qin is not completely equal to Qout.???" T

Re: [Yade-users] [Question #662276]: yade --check

2018-01-19 Thread Bruno Chareyre
Question #662276 on Yade changed: https://answers.launchpad.net/yade/+question/662276 Bruno Chareyre proposed the following answer: Hi, I can reproduce #14. It is odd: if I run manually the same script used for the --check, with the command yadedaily DEM-PFV-check.py then it gives the expected

Re: [Yade-users] [Question #663129]: Minus one TesselationWrapper.volume ?

2018-01-19 Thread Bruno Chareyre
Question #663129 on Yade changed: https://answers.launchpad.net/yade/+question/663129 Bruno Chareyre posted a new comment: Maybe, but I think the sequence appears relatively clearly in the example. What would be worth typing would be to triangulate automatically the current scene when

Re: [Yade-users] [Question #663129]: Minus one TesselationWrapper.volume ?

2018-01-18 Thread Bruno Chareyre
Question #663129 on Yade changed: https://answers.launchpad.net/yade/+question/663129 Status: Open => Answered Bruno Chareyre proposed the following answer: Hi Jérôme, hopefully it will work if you keep the sequence as it is in the original MWE, i.e. TW=TesselationWrapper() TW.triangul

Re: [Yade-users] [Question #663143]: Grid connections error/bug?

2018-01-18 Thread Bruno Chareyre
Question #663143 on Yade changed: https://answers.launchpad.net/yade/+question/663143 Bruno Chareyre proposed the following answer: Hi Klaus, Does it mean a regression or the existing examples work as usual? B -- You received this question notification because your team yade-users is an answer

Re: [Yade-users] [Question #662105]: simulation explodes as soon as flow engine is activated

2018-01-11 Thread Bruno Chareyre
Question #662105 on Yade changed: https://answers.launchpad.net/yade/+question/662105 Bruno Chareyre posted a new comment: Hi, You are right and the reason for that is that a periodic problem has no boundary, hence no boundary condition. bndCondIsPressure=[X,X,0,0,X,X] is ok but you need

Re: [Yade-users] [Question #662105]: simulation explodes as soon as flow engine is activated

2018-01-10 Thread Bruno Chareyre
Question #662105 on Yade changed: https://answers.launchpad.net/yade/+question/662105 Bruno Chareyre posted a new comment: Hi Luc, First, the pressure gradient is not "along periodic boundary conditions". It is just the pressure gradient, a vector. Second, what made

Re: [Yade-users] [Question #661926]: REFD method with clumps, but maintaining the proportion of clumps

2017-12-21 Thread Bruno Chareyre
Question #661926 on Yade changed: https://answers.launchpad.net/yade/+question/661926 Bruno Chareyre proposed the following answer: Ok... growParticles() is changing positions instantaneously, however some positions stored internally in the clump data are not updated and they are used

Re: [Yade-users] [Question #661926]: REFD method with clumps, but maintaining the proportion of clumps

2017-12-21 Thread Bruno Chareyre
Question #661926 on Yade changed: https://answers.launchpad.net/yade/+question/661926 Bruno Chareyre proposed the following answer: I just found that the the particles were not clumped at all after sp.toSimulation(). The changing overlap is not because they grow, it is because the individual

Re: [Yade-users] [Question #661926]: REFD method with clumps, but maintaining the proportion of clumps

2017-12-20 Thread Bruno Chareyre
Question #661926 on Yade changed: https://answers.launchpad.net/yade/+question/661926 Status: Open => Answered Bruno Chareyre proposed the following answer: Thank you for shortening the script. It seems you found a bug but I don't understand what happens in details, yet. If you comment

Re: [Yade-users] [Question #661824]: PyQt4 issue on a Cray

2017-12-20 Thread Bruno Chareyre
Question #661824 on Yade changed: https://answers.launchpad.net/yade/+question/661824 Bruno Chareyre proposed the following answer: Hi Garry, cmake output has this strange line: > Found unsuitable Qt version "5.9.3" from > /p/home/gpekmezi/apps/qt5/build/bin/qmake I wonder why.

Re: [Yade-users] [Question #661926]: REFD method with clumps, but maintaining the proportion of clumps

2017-12-18 Thread Bruno Chareyre
Question #661926 on Yade changed: https://answers.launchpad.net/yade/+question/661926 Status: Open => Answered Bruno Chareyre proposed the following answer: Hi Marcus, Is there a reason why you think "maintaining the proportion of clumps" is a problem? Did you find it was

Re: [Yade-users] [Question #661630]: maximum or mean velocity

2017-12-13 Thread Bruno Chareyre
Question #661630 on Yade changed: https://answers.launchpad.net/yade/+question/661630 Bruno Chareyre proposed the following answer: > the mean velocity of the previous step is already calculated as a part of the YADE scheme. Is there a way to access this variable? Hi, In Jan's #1 ans

Re: [Yade-users] [Question #661683]: Python script execution in PFC

2017-12-13 Thread Bruno Chareyre
Question #661683 on Yade changed: https://answers.launchpad.net/yade/+question/661683 Status: Open => Answered Bruno Chareyre proposed the following answer: Dear Shiva, I would suggest to ask such question on the PFC forums since this one is mainly related to another software called y

Re: [Yade-users] [Question #661626]: add Van der Waals force into the Hertz-Mindlin model

2017-12-13 Thread Bruno Chareyre
Question #661626 on Yade changed: https://answers.launchpad.net/yade/+question/661626 Bruno Chareyre proposed the following answer: Where should we start? :) Did you read the documentation? If so what about jumping on an existing contact model and experimenting how to play/modify it to your

Re: [Yade-users] [Question #661573]: Shear force calculation

2017-12-11 Thread Bruno Chareyre
Question #661573 on Yade changed: https://answers.launchpad.net/yade/+question/661573 Bruno Chareyre posted a new comment: I would suggest the part of the documentation dealing with interactions: https://yade-dem.org/doc/formulation.html#creating-interaction-between-particles Bruno -- You

Re: [Yade-users] [Question #661573]: Shear force calculation

2017-12-11 Thread Bruno Chareyre
Question #661573 on Yade changed: https://answers.launchpad.net/yade/+question/661573 Status: Open => Answered Bruno Chareyre proposed the following answer: Hi there are two main reasons. 1- The normal direction is uniquely defined, the shear direction is not (it is a pl

Re: [Yade-users] [Question #661501]: Isotropic compaction and radius expansion

2017-12-08 Thread Bruno Chareyre
Question #661501 on Yade changed: https://answers.launchpad.net/yade/+question/661501 Status: Open => Answered Bruno Chareyre proposed the following answer: What is the difference with https://answers.launchpad.net/yade/+question/661406? -- You received this question notification beca

Re: [Yade-users] [Question #661406]: Sample preparation

2017-12-06 Thread Bruno Chareyre
Question #661406 on Yade changed: https://answers.launchpad.net/yade/+question/661406 Status: Open => Answered Bruno Chareyre proposed the following answer: Hi, you could check [1]. It shows what you are asking I think. [1] https://github.com/yade/trunk/blob/master/examples/triax-tutor

Re: [Yade-users] [Question #661262]: How to record the rotation angle of polyhedra?

2017-11-30 Thread Bruno Chareyre
Question #661262 on Yade changed: https://answers.launchpad.net/yade/+question/661262 Status: Open => Answered Bruno Chareyre proposed the following answer: Yade [3]: q=O.bodies[200].state.ori Yade [4]: q. +TAB q.conjugate q.norm q.Rotate q.toAxisAn

Re: [Yade-users] [Question #661159]: Bug while installing Yade from source code

2017-11-29 Thread Bruno Chareyre
Question #661159 on Yade changed: https://answers.launchpad.net/yade/+question/661159 Status: Open => Answered Bruno Chareyre proposed the following answer: Hi, It sounds like the Qt4/Qt5 problem on 14.04. You may try to compile with -DUSE_QT5=OFF (or maybe install additional/updated

Re: [Yade-users] [Question #660585]: Why avoid reseting particle positions in DFNFlow?

2017-11-28 Thread Bruno Chareyre
Question #660585 on Yade changed: https://answers.launchpad.net/yade/+question/660585 Bruno Chareyre posted a new comment: On 11/27/2017 07:32 PM, Robert Caulk wrote: > > Trial and error show that there is indeed a stability threshold > associated with the remesh interval.

Re: [Yade-users] [Question #660590]: Loading and manipulating a saving file

2017-11-27 Thread Bruno Chareyre
Question #660590 on Yade changed: https://answers.launchpad.net/yade/+question/660590 Status: Open => Answered Bruno Chareyre proposed the following answer: >Does it mean that users has to always apply "O.reset()" when they have "erase" and "clear" in the

Re: [Yade-users] [Question #660585]: Why avoid reseting particle positions in DFNFlow?

2017-11-16 Thread Bruno Chareyre
Question #660585 on Yade changed: https://answers.launchpad.net/yade/+question/660585 Bruno Chareyre proposed the following answer: >I don't think the DFNFlow scheme is truly poroelastic No, no, that's fine. We are only speaking of re-meshing here. The volume changes are still calcula

Re: [Yade-users] [Question #660585]: Why avoid reseting particle positions in DFNFlow?

2017-11-15 Thread Bruno Chareyre
Question #660585 on Yade changed: https://answers.launchpad.net/yade/+question/660585 Status: Open => Answered Bruno Chareyre proposed the following answer: Hi, What justified the existence of a specific function was the need to make it do nothing... There was probably a better way t

Re: [Yade-users] [Question #660522]: can walls be excluded from particles cloud creation?

2017-11-09 Thread Bruno Chareyre
Question #660522 on Yade changed: https://answers.launchpad.net/yade/+question/660522 Bruno Chareyre posted a new comment: For future reference, the correct code in #2 should read: sp.makeCloud((0,0,3),(20,20,15),rMean=0.5) for x,r in sp: if (is inside): O.bodies.append(sphere(x,r

Re: [Yade-users] [Question #660522]: can walls be excluded from particles cloud creation?

2017-11-09 Thread Bruno Chareyre
Question #660522 on Yade changed: https://answers.launchpad.net/yade/+question/660522 Status: Needs information => Answered Bruno Chareyre proposed the following answer: Hi John, A question here is what is 'file.stl'. If it comes from an analytical description of the sh

Re: [Yade-users] [Question #659557]: Flow engine working randomly with CHOLMOD

2017-11-08 Thread Bruno Chareyre
Question #659557 on Yade changed: https://answers.launchpad.net/yade/+question/659557 Bruno Chareyre posted a new comment: @Robert I tried to identify the commits which touched relevant code, but I could not spot anything wrong precisely. Bruno -- You received this question notification

Re: [Yade-users] [Question #659557]: Flow engine working randomly with CHOLMOD

2017-11-08 Thread Bruno Chareyre
Question #659557 on Yade changed: https://answers.launchpad.net/yade/+question/659557 Bruno Chareyre proposed the following answer: @Luc Yes, let's have a bug. B -- You received this question notification because your team yade-users is an answer contact for Yade

Re: [Yade-users] [Question #659557]: Flow engine working randomly with CHOLMOD

2017-11-08 Thread Bruno Chareyre
Question #659557 on Yade changed: https://answers.launchpad.net/yade/+question/659557 Bruno Chareyre proposed the following answer: Hi, As far as I understand DFN is not the question, I agree with Robert. Third party libraries may also not be to blame in the end, if a previous revision is ok (I

Re: [Yade-users] [Question #659557]: Flow engine working randomly with CHOLMOD

2017-11-08 Thread Bruno Chareyre
Question #659557 on Yade changed: https://answers.launchpad.net/yade/+question/659557 Bruno Chareyre posted a new comment: I spotted these: https://github.com/yade/trunk/commit/d63293b5d6397c8d956e9d533f33ce4077667c0a https://github.com/yade/trunk/commit/f6970362d9e6e866e8adbc8cbea18e54f677f785 B

Re: [Yade-users] [Question #659557]: Flow engine working randomly with CHOLMOD

2017-11-08 Thread Bruno Chareyre
I spotted these: https://github.com/yade/trunk/commit/d63293b5d6397c8d956e9d533f33ce4077667c0a https://github.com/yade/trunk/commit/f6970362d9e6e866e8adbc8cbea18e54f677f785 B ___ Mailing list: https://launchpad.net/~yade-users Post to :

Re: [Yade-users] [Question #660314]: ahout the pressure built-up on loose seabed

2017-11-03 Thread Bruno Chareyre
Question #660314 on Yade changed: https://answers.launchpad.net/yade/+question/660314 Status: Open => Answered Bruno Chareyre proposed the following answer: I would suggest to first take paper and pen and evaluate - for the parameters you use - consolidation time vs. elastic time (e.g. t

Re: [Yade-users] [Question #660289]: how to simulate a rigid body when use gtsPfacet and CohFrictMat

2017-11-03 Thread Bruno Chareyre
Question #660289 on Yade changed: https://answers.launchpad.net/yade/+question/660289 Status: Open => Answered Bruno Chareyre proposed the following answer: > by using O.bodies.appendClumped()? I guess so. Give it a try? B -- You received this question notification because your tea

Re: [Yade-users] [Question #660289]: how to simulate a rigid body when use gtsPfacet and CohFrictMat

2017-11-03 Thread Bruno Chareyre
Question #660289 on Yade changed: https://answers.launchpad.net/yade/+question/660289 Status: Open => Answered Bruno Chareyre proposed the following answer: Hi, The results your report sound correct. If the falling object is very flexible it is deforming a lot. If it less flexible (

Re: [Yade-users] [Question #659557]: Flow engine working randomly with CHOLMOD

2017-10-31 Thread Bruno Chareyre
Question #659557 on Yade changed: https://answers.launchpad.net/yade/+question/659557 Bruno Chareyre posted a new comment: Hi Luc, Lingran, Did you check if some older versions (that "were" working) would work for you? I'd like to be sure that it is not a problem introduced recently i

Re: [Yade-users] [Question #660155]: Final velocity

2017-10-31 Thread Bruno Chareyre
Question #660155 on Yade changed: https://answers.launchpad.net/yade/+question/660155 Bruno Chareyre proposed the following answer: It seems a question is "does DragEngine support clumps?". I don't know (I guess not), but you can probably check the code to see how the

Re: [Yade-users] [Question #660090]: can't open yade when I have already opened 64 yade

2017-10-31 Thread Bruno Chareyre
Question #660090 on Yade changed: https://answers.launchpad.net/yade/+question/660090 Bruno Chareyre posted a new comment: That's what I suspected. Although I like to see this approach from an experimentalist point of view I must say I don't think it will work very well. How will you pass

Re: [Yade-users] [Question #660024]: Chunksize use and compilation errors

2017-10-30 Thread Bruno Chareyre
Question #660024 on Yade changed: https://answers.launchpad.net/yade/+question/660024 Status: Open => Answered Bruno Chareyre proposed the following answer: Is it again for the "Polyhedra" code? It could be that this particular file introduced a problem. Can you compile without

Re: [Yade-users] [Question #660024]: Chunksize use and compilation errors

2017-10-30 Thread Bruno Chareyre
Question #660024 on Yade changed: https://answers.launchpad.net/yade/+question/660024 Status: Open => Needs information Bruno Chareyre requested more information: After building with chunksize=4 you made another independent fresh build for chunksize=8, correct? B -- You recei

Re: [Yade-users] [Question #660090]: can't open yade when I have already opened 64 yade

2017-10-30 Thread Bruno Chareyre
Question #660090 on Yade changed: https://answers.launchpad.net/yade/+question/660090 Bruno Chareyre proposed the following answer: >without display [...] xterm is also increasing the the number of clients Mmmmh... I see (I think). So I would say the real problem was to use xterm in the fi

Re: [Yade-users] [Question #660090]: can't open yade when I have already opened 64 yade

2017-10-30 Thread Bruno Chareyre
Question #660090 on Yade changed: https://answers.launchpad.net/yade/+question/660090 Status: Open => Answered Bruno Chareyre proposed the following answer: >how to increase xclients limit to 512 and how to run Yade without $DISPLAY See Jan's extra answer. Actually it is "incr

Re: [Yade-users] [Question #660090]: can't open yade when I have already opened 64 yade

2017-10-30 Thread Bruno Chareyre
Question #660090 on Yade changed: https://answers.launchpad.net/yade/+question/660090 Status: Needs information => Answered Bruno Chareyre proposed the following answer: >Can't open display: :0 Sounds like you are trying to get 64+ graphical renderings... any "qt&quo

Re: [Yade-users] [Question #659557]: Flow engine working randomly with CHOLMOD

2017-10-27 Thread Bruno Chareyre
Question #659557 on Yade changed: https://answers.launchpad.net/yade/+question/659557 Bruno Chareyre posted a new comment: The total force is entirely defined by the fluid boundary conditions (not from an algorithmic point of view, but mathematically it is the case). For instance the total

Re: [Yade-users] [Question #659557]: Flow engine working randomly with CHOLMOD

2017-10-27 Thread Bruno Chareyre
Question #659557 on Yade changed: https://answers.launchpad.net/yade/+question/659557 Bruno Chareyre posted a new comment: @Lingran, Thank you very much for reporting. Further, you could compile with a replacement of openblas (atlas, or legacy blas) since I suspect openblas could be the problem

Re: [Yade-users] [Question #659888]: 'PyRunner' module is unable to call self-defined function

2017-10-27 Thread Bruno Chareyre
Question #659888 on Yade changed: https://answers.launchpad.net/yade/+question/659888 Bruno Chareyre posted a new comment: Hi, execfile("XXX.py") should be ok. There are differences between "run" and "execfile" (mainly in namespaces I think) but I can't expla

Re: [Yade-users] [Question #659949]: how to calculate the unbalanced force

2017-10-27 Thread Bruno Chareyre
Question #659949 on Yade changed: https://answers.launchpad.net/yade/+question/659949 Status: Open => Answered Bruno Chareyre proposed the following answer: >the sum of the forces of every element in one 2-sphere clump is not the same as the force got directly from the clump C

Re: [Yade-users] [Question #659557]: Flow engine working randomly with CHOLMOD

2017-10-26 Thread Bruno Chareyre
Question #659557 on Yade changed: https://answers.launchpad.net/yade/+question/659557 Bruno Chareyre posted a new comment: I'm confident in the fact that something random occurs. This is consistently reported by you (Luc) and Lingran (thanks for detailed report). This is most likely unrelated

Re: [Yade-users] [Question #659949]: how to calculate the unbalanced force

2017-10-25 Thread Bruno Chareyre
Question #659949 on Yade changed: https://answers.launchpad.net/yade/+question/659949 Status: Open => Answered Bruno Chareyre proposed the following answer: >Is this correct? No. (f1 + f2 + f3 + ...) / (contact_f1 + contact_f2 + contact_f3 +...) is the sum of body forces magnitude d

Re: [Yade-users] [Question #659557]: Flow engine working randomly with CHOLMOD

2017-10-25 Thread Bruno Chareyre
Question #659557 on Yade changed: https://answers.launchpad.net/yade/+question/659557 Status: Open => Answered Bruno Chareyre proposed the following answer: > for the boundaryUseMaxMin=[1,1,1,1,1,1] . I misunderstood the doc. Or the doc is not clear... feel free to improve when yo

Re: [Yade-users] [Question #659557]: Flow engine working randomly with CHOLMOD

2017-10-24 Thread Bruno Chareyre
Question #659557 on Yade changed: https://answers.launchpad.net/yade/+question/659557 Status: Open => Answered Bruno Chareyre proposed the following answer: > boundaryUseMaxMin=[1,1,1,1,1,1] It means that instead of walls positions it will use static positions defined by max/min (the

Re: [Yade-users] [Question #659737]: questions about boundary condition of PFV model

2017-10-23 Thread Bruno Chareyre
Question #659737 on Yade changed: https://answers.launchpad.net/yade/+question/659737 Status: Open => Answered Bruno Chareyre proposed the following answer: >I want to simulate a test of in-site or experiment, but its area is too large so that I have to select a part of area to si

Re: [Yade-users] [Question #659737]: questions about boundary condition of PFV model

2017-10-23 Thread Bruno Chareyre
Question #659737 on Yade changed: https://answers.launchpad.net/yade/+question/659737 Status: Open => Answered Bruno Chareyre proposed the following answer: Hello, The current code will not handle flexible boundaries for the fluid part. For periodicity the question is a bit uncl

Re: [Yade-users] [Question #659647]: Problem with the Peri triaxial test in example script

2017-10-20 Thread Bruno Chareyre
Question #659647 on Yade changed: https://answers.launchpad.net/yade/+question/659647 Bruno Chareyre posted a new comment: >Well, for that matter, I posted the entire script above The entire script does not tell us what you changed wrt the original example. This is a crucial pi

Re: [Yade-users] [Question #659557]: Flow engine working randomly with CHOLMOD

2017-10-20 Thread Bruno Chareyre
Question #659557 on Yade changed: https://answers.launchpad.net/yade/+question/659557 Status: Open => Answered Bruno Chareyre proposed the following answer: >FlowEngine requires the walls to be appended in the simulation before the spheres, right? Not at all. But you have to s

Re: [Yade-users] [Question #658938]: Modeling presence of water( a degree of saturation) in consolidation test

2017-10-20 Thread Bruno Chareyre
Question #658938 on Yade changed: https://answers.launchpad.net/yade/+question/658938 Bruno Chareyre proposed the following answer: 1) > it either results in the expulsion of air As I told you it is not expulsing any fluid when growing because the change of size is not reflected in the fl

Re: [Yade-users] [Question #659647]: Problem with the Peri triaxial test in example script

2017-10-20 Thread Bruno Chareyre
Question #659647 on Yade changed: https://answers.launchpad.net/yade/+question/659647 Bruno Chareyre posted a new comment: >after slightly modifying How informative is this? Why not telling us what you changed? B -- You received this question notification because your team yade-us

Re: [Yade-users] [Question #652968]: Implementing Local Damping

2017-10-18 Thread Bruno Chareyre
Question #652968 on Yade changed: https://answers.launchpad.net/yade/+question/652968 Status: Open => Answered Bruno Chareyre proposed the following answer: 1- Is your question "how can I calculate porosity?". I would think it is trivial if the volume is defined by facets

Re: [Yade-users] [Question #659557]: Flow engine working randomly with CHOLMOD

2017-10-18 Thread Bruno Chareyre
Question #659557 on Yade changed: https://answers.launchpad.net/yade/+question/659557 Bruno Chareyre posted a new comment: >CMake Warning: Manually-specified variables were not used by the project: DFNFLOW Syntax problem. DFNFLOW is a flag for gcc, not for cmake. Consequently you h

Re: [Yade-users] [Question #659557]: Flow engine working randomly with CHOLMOD

2017-10-17 Thread Bruno Chareyre
Question #659557 on Yade changed: https://answers.launchpad.net/yade/+question/659557 Status: Open => Needs information Bruno Chareyre requested more information: Hi Luc, I've heard the same story from different sides in the last months. It seems the linear solver has issues. Can you s

Re: [Yade-users] [Question #658938]: Modeling presence of water( a degree of saturation) in consolidation test

2017-10-16 Thread Bruno Chareyre
Question #658938 on Yade changed: https://answers.launchpad.net/yade/+question/658938 Bruno Chareyre proposed the following answer: > I can see the spheres growing in size. They grow in size because you request so (internalCompaction=True). In the original script you started with this is tur

Re: [Yade-users] [Question #658938]: Modeling presence of water( a degree of saturation) in consolidation test

2017-10-12 Thread Bruno Chareyre
Question #658938 on Yade changed: https://answers.launchpad.net/yade/+question/658938 Bruno Chareyre proposed the following answer: 1)>"What is a bitmask, huh?!" I can recognize my prose. Thank you for calling it useful. :) Any suggestion on how/where it should be explained is w

Re: [Yade-users] [Question #659281]: Two different EnlargeFactors within a simulation

2017-10-12 Thread Bruno Chareyre
Question #659281 on Yade changed: https://answers.launchpad.net/yade/+question/659281 Status: Open => Answered Bruno Chareyre proposed the following answer: Hi, EnlargeFactors are used to generate more virtual interactions, in the end it is (should be) the set Ig2/Ip2/Law2 which will dec

Re: [Yade-users] [Question #658938]: Modeling presence of water( a degree of saturation) in consolidation test

2017-10-11 Thread Bruno Chareyre
Question #658938 on Yade changed: https://answers.launchpad.net/yade/+question/658938 Bruno Chareyre proposed the following answer: 2) The short answer is "keep it =3". If =0 you will use a less efficient strategy for solving. Other numbers will not work. Misleading, I agree. 3) Th

Re: [Yade-users] [Question #658629]: Oedometric consolidation test

2017-10-05 Thread Bruno Chareyre
Question #658629 on Yade changed: https://answers.launchpad.net/yade/+question/658629 Bruno Chareyre proposed the following answer: I must point out (sorry to enter this discussion late) that you seem to make your life complex for no good, for the sole reason that you want a circular cross

Re: [Yade-users] [Question #658692]: Effective parameters in Triaxial test

2017-09-27 Thread Bruno Chareyre
Question #658692 on Yade changed: https://answers.launchpad.net/yade/+question/658692 Bruno Chareyre proposed the following answer: > looks same with some ignorable changings Not at all. I can visually distinguish clear differences between the plots. I then see nothing wrong in your resu

Re: [Yade-users] [Question #658692]: Effective parameters in Triaxial test

2017-09-27 Thread Bruno Chareyre
Question #658692 on Yade changed: https://answers.launchpad.net/yade/+question/658692 Status: Open => Answered Bruno Chareyre proposed the following answer: Hello, Do you mean that the results are _exactly_ the same? If so my guess is that you forgot to save the file after chang

Re: [Yade-users] [Question #658673]: Learning time

2017-09-26 Thread Bruno Chareyre
Question #658673 on Yade changed: https://answers.launchpad.net/yade/+question/658673 Status: Open => Answered Bruno Chareyre proposed the following answer: >Actually I dont have a previous programming experience Not even matlab or something? Well... it may be difficult. I'd s

Re: [Yade-users] [Question #658673]: Learning time

2017-09-26 Thread Bruno Chareyre
Question #658673 on Yade changed: https://answers.launchpad.net/yade/+question/658673 Status: Open => Answered Bruno Chareyre proposed the following answer: Hello, it is very difficult to estimate but my guess is that it can take between a few weeks and a few months, depending mainly on

Re: [Yade-users] [Question #658491]: variable properties

2017-09-22 Thread Bruno Chareyre
Question #658491 on Yade changed: https://answers.launchpad.net/yade/+question/658491 Bruno Chareyre proposed the following answer: Hi, Contact stiffness must be scaled proportionally to material stiffness. I would add that the python loop on interactions may take too much time if it is applied

Re: [Yade-users] [Question #658232]: Using Triangulation Data in a Yade Script

2017-09-19 Thread Bruno Chareyre
Question #658232 on Yade changed: https://answers.launchpad.net/yade/+question/658232 Status: Open => Answered Bruno Chareyre proposed the following answer: Hello Gary, At the bottom level of the triangulation code there is CGAL library. On the top of CGAL, Yade has mainly C++ funct

Re: [Yade-users] [Question #658070]: from start: Segmentation fault (core dumped)

2017-09-18 Thread Bruno Chareyre
Question #658070 on Yade changed: https://answers.launchpad.net/yade/+question/658070 Status: Open => Answered Bruno Chareyre proposed the following answer: You can maybe get more than "segfault" if you run the program with "gdb" [1] (to at least know which li

Re: [Yade-users] [Question #657063]: unconsolidated undrained triaxial test

2017-09-18 Thread Bruno Chareyre
Question #657063 on Yade changed: https://answers.launchpad.net/yade/+question/657063 Status: Open => Answered Bruno Chareyre proposed the following answer: Hi, I would suggest to get confirmation by your own validations, based on the output (e.g. is volume constant when suppo

Re: [Yade-users] [Question #658037]: Incorporating Multiple Interaction Physics on Bodies

2017-09-15 Thread Bruno Chareyre
Question #658037 on Yade changed: https://answers.launchpad.net/yade/+question/658037 Bruno Chareyre proposed the following answer: >would the interaction loop look as follows? Exactly. >So, is there a way to add only adhesion between the particles using Hertz-Mindlin contact? Yes. Move

Re: [Yade-users] [Question #658070]: from start: Segmentation fault (core dumped)

2017-09-15 Thread Bruno Chareyre
Question #658070 on Yade changed: https://answers.launchpad.net/yade/+question/658070 Status: Open => Answered Bruno Chareyre proposed the following answer: Hello, It is unusual that a debug build just segfaults. Could you please make sure you are really running a debug build? E.g. do

Re: [Yade-users] [Question #658037]: Incorporating Multiple Interaction Physics on Bodies

2017-09-15 Thread Bruno Chareyre
Question #658037 on Yade changed: https://answers.launchpad.net/yade/+question/658037 Status: Open => Answered Bruno Chareyre proposed the following answer: Hi, The short answer is "no", there is no trivial solution. Yade handles this problem gracefully only if the materi

Re: [Yade-users] [Question #657968]: Micro-stress Tesselation

2017-09-13 Thread Bruno Chareyre
Question #657968 on Yade changed: https://answers.launchpad.net/yade/+question/657968 Status: Open => Answered Bruno Chareyre proposed the following answer: Hi Gary. thank you for clear question. I wonder why you believe that "doing so after triangulation gives volumes that are

Re: [Yade-users] [Question #647570]: Viscoelastic material

2017-09-13 Thread Bruno Chareyre
Question #647570 on Yade changed: https://answers.launchpad.net/yade/+question/647570 Bruno Chareyre posted a new comment: My mistake: the second in the list is actually a Maxwell type [1] (i.e. continuous creep under constant load). The third one is still SLS extended to non-linear viscosity. B

Re: [Yade-users] [Question #647570]: Viscoelastic material

2017-09-13 Thread Bruno Chareyre
Question #647570 on Yade changed: https://answers.launchpad.net/yade/+question/647570 Status: Open => Answered Bruno Chareyre proposed the following answer: Hi, could specify what kind of visco-elasticity you are looking for (not an expert of asphalt myself)? Yade has (at le

Re: [Yade-users] [Question #657893]: Creating an animation of interactions using VTKExporter and Paraview

2017-09-12 Thread Bruno Chareyre
Question #657893 on Yade changed: https://answers.launchpad.net/yade/+question/657893 Bruno Chareyre posted a new comment: >I am also planning to animate polyhedra with the created method, where only VTKExporter can be used You could also use both, Exporter for the polyhedra, Recor

Re: [Yade-users] [Question #657677]: How to export and import a irregular shape particles model.

2017-09-11 Thread Bruno Chareyre
Question #657677 on Yade changed: https://answers.launchpad.net/yade/+question/657677 Bruno Chareyre posted a new comment: @Jan, I think the LOG_ERROR was blocking (isn't it, in general?) @Kun Zeng Set verletDist=0 if you don't want to think about the appropriate value. Else update yade version

Re: [Yade-users] [Question #657677]: How to export and import a irregular shape particles model.

2017-09-11 Thread Bruno Chareyre
Question #657677 on Yade changed: https://answers.launchpad.net/yade/+question/657677 Bruno Chareyre proposed the following answer: Hi, Comment #3 is not very clear to me, but the error message is rather clear about how to fix the issue: "consider setting a positive verletDist in your s

Re: [Yade-users] [Question #657677]: How to export and import a irregular shape particles model.

2017-09-07 Thread Bruno Chareyre
Question #657677 on Yade changed: https://answers.launchpad.net/yade/+question/657677 Bruno Chareyre proposed the following answer: Hi, Exporting/importing is the source of much troubles. I would suggest to NOT split the problem in two different scripts for a start. A single script can do

Re: [Yade-users] [Question #657063]: unconsolidated undrained triaxial test

2017-09-07 Thread Bruno Chareyre
Question #657063 on Yade changed: https://answers.launchpad.net/yade/+question/657063 Status: Open => Answered Bruno Chareyre proposed the following answer: For CU, see #1 by Amiya. For UU, again, there is nothing to do. Just as textbooks (should) tell you, conducting UU te

Re: [Yade-users] [Question #657564]: continuous creation and destruction of bodies

2017-09-06 Thread Bruno Chareyre
Question #657564 on Yade changed: https://answers.launchpad.net/yade/+question/657564 Bruno Chareyre proposed the following answer: Hi, I would suggest to check examples/spheresFactory.py which combines the engines DomainLimiter and BoxFactory to delete/insert particles. It will be more

Re: [Yade-users] [Question #657126]: Performing a penetration test

2017-09-05 Thread Bruno Chareyre
Question #657126 on Yade changed: https://answers.launchpad.net/yade/+question/657126 Bruno Chareyre posted a new comment: Hi, just a note (we are going off topic...): it is not bad sometimes to also realize that simple things are also possible; you don't "have to" use the most advan

Re: [Yade-users] [Question #657063]: unconsolidated undrained triaxial test

2017-09-04 Thread Bruno Chareyre
Question #657063 on Yade changed: https://answers.launchpad.net/yade/+question/657063 Status: Open => Answered Bruno Chareyre proposed the following answer: The consolidation stage is supposed to be isotropic. If it is isotropic + constant volume then there is really nothing happen

Re: [Yade-users] [Question #657216]: Smooth joint Model and Love-Weber stress calculation

2017-09-04 Thread Bruno Chareyre
Question #657216 on Yade changed: https://answers.launchpad.net/yade/+question/657216 Bruno Chareyre posted a new comment: @Luc >"Particles interacting through the smooth joint contact logic have a contact orientation that is different from the one computed from the normal int

Re: [Yade-users] [Question #657225]: Intraction between particles

2017-09-01 Thread Bruno Chareyre
Question #657225 on Yade changed: https://answers.launchpad.net/yade/+question/657225 Status: Open => Answered Bruno Chareyre proposed the following answer: >my Max load result is just 6N but I need to increase it to 60 or more Increase material strength by 10 ore more? B -- You re

Re: [Yade-users] [Question #657216]: Smooth joint Model and Love-Weber stress calculation

2017-09-01 Thread Bruno Chareyre
Question #657216 on Yade changed: https://answers.launchpad.net/yade/+question/657216 Status: Open => Answered Bruno Chareyre proposed the following answer: Hello, Love-Weber is only assuming that the interaction between two bodies can be described by a force. Hence if I don't m

Re: [Yade-users] [Question #657227]: Triaxial (CU)

2017-09-01 Thread Bruno Chareyre
Question #657227 on Yade changed: https://answers.launchpad.net/yade/+question/657227 Bruno Chareyre posted a new comment: Please, please, dedicate a bit more efforts to editing your questions. Do we really have to read something like this (below) to understand your problem? OTOH, what would

Re: [Yade-users] [Question #657115]: Stress/strain probe?

2017-08-30 Thread Bruno Chareyre
Question #657115 on Yade changed: https://answers.launchpad.net/yade/+question/657115 Status: Open => Answered Bruno Chareyre proposed the following answer: Hello Luc, Triangulation is the best way I know to define average strain in subdomains. Why not using it? Bruno -- You recei

Re: [Yade-users] [Question #657063]: unconsolidated undrained triaxial test

2017-08-28 Thread Bruno Chareyre
Question #657063 on Yade changed: https://answers.launchpad.net/yade/+question/657063 Status: Open => Answered Bruno Chareyre proposed the following answer: Hi, I don't see a need to distinguish CD/CU/UU here. The real question is if one step can be "U" and as Amiya replied: ye

Re: [Yade-users] [Question #656214]: problem replacing TriaxialStressController with PeriTriaxController

2017-08-24 Thread Bruno Chareyre
Question #656214 on Yade changed: https://answers.launchpad.net/yade/+question/656214 Bruno Chareyre posted a new comment: >I had to increase the maxstrainrate to 1e10 and run 500,000 steps but it compresses! I'm sure there is a simple reason for that. Is the maxstrainrate value really reac

Re: [Yade-users] [Question #655490]: Is this program suitable for a problem of impact of rigid rock against elastis-plastic wall with hardening?

2017-08-21 Thread Bruno Chareyre
Question #655490 on Yade changed: https://answers.launchpad.net/yade/+question/655490 Bruno Chareyre proposed the following answer: >'seeing "heating" in your question' Or maybe it was just "hitting"? Still, elasto-plasticity with hardening as in textbooks is not somethin

Re: [Yade-users] [Question #655490]: Is this program suitable for a problem of impact of rigid rock against elastis-plastic wall with hardening?

2017-08-21 Thread Bruno Chareyre
Question #655490 on Yade changed: https://answers.launchpad.net/yade/+question/655490 Bruno Chareyre proposed the following answer: Wait a minute... sorry for prev. message. The question reads: "erosion wear (plastic deformation) ". Are you 100% sure that elastoplasticity is really t

Re: [Yade-users] [Question #655422]: On shearing loads

2017-08-08 Thread Bruno Chareyre
Question #655422 on Yade changed: https://answers.launchpad.net/yade/+question/655422 Bruno Chareyre posted a new comment: Could you clarify the boundary conditions?! "two rigid walls that move oppositely" are moving toward each other or parallel to each other? Also, what is the

Re: [Yade-users] [Question #655422]: On shearing loads

2017-08-07 Thread Bruno Chareyre
Question #655422 on Yade changed: https://answers.launchpad.net/yade/+question/655422 Bruno Chareyre proposed the following answer: Hi, "Shearing load" is quite vague. Do you mean pure shear? simple shear? mixed stress-strain conditions with imposed normal stress? In the two lat

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