[Yade-users] [Question #683542]: How does Yade run the script?

New question #683542 on Yade: https://answers.launchpad.net/yade/+question/683542 Hello I am trying to run the script but I am little confused on how yade run it. Is the command in the "O.engine" part looped and the other part of the script just run for 1 time? Thank you very much for

[Yade-users] [Question #683543]: Undrained triaxial test servo control

New question #683543 on Yade: https://answers.launchpad.net/yade/+question/683543 Hello, I want to run the undrained triaxial test and I have tried two servo control mechanism. One control mechanism works but the other doesn't. So I want to ask why one works but the other doesn't while they

Re: [Yade-users] [Question #683542]: How does Yade run the script?

Question #683542 on Yade changed: https://answers.launchpad.net/yade/+question/683542 Status: Answered => Solved Yuxuan Wen confirmed that the question is solved: Thanks Robert Caulk, that solved my question. -- You received this question notification because your team yade-us

Re: [Yade-users] [Question #235934]: Reference for coeff of restitution in Hertz-Mindlin with non-linear damping

Question #235934 on Yade changed: https://answers.launchpad.net/yade/+question/235934 Yuxuan Wen posted a new comment: Hello Guys, I just checked the source file of Hertz-Mindlin model and found that the shear stiffness ks is a little different with that in Tsuji's paper (1992

Re: [Yade-users] [Question #691980]: How to generate the particle-wall in the shear flow

Question #691980 on Yade changed: https://answers.launchpad.net/yade/+question/691980 Status: Answered => Open Yuxuan Wen is still having a problem: Hello Jan, I am thinking to use clump so that particles can be linked and become a wall. Do you think this path can work? Thank you! Yux

Re: [Yade-users] [Question #683543]: Undrained triaxial test servo control

Question #683543 on Yade changed: https://answers.launchpad.net/yade/+question/683543 Status: Answered => Solved Yuxuan Wen confirmed that the question is solved: Thank you Robert, the problem is solved! Best Regards, Yuxuan -- You received this question notification because your t

Re: [Yade-users] [Question #691980]: How to generate the particle-wall in the shear flow

Question #691980 on Yade changed: https://answers.launchpad.net/yade/+question/691980 Yuxuan Wen posted a new comment: Hello Jan, Thank you for your answering! > But I am stuck on generating the particle-wall > what is the problem? What have you tried and why/how it did not work? I am

[Yade-users] [Question #691980]: How to generate the particle-wall in the shear flow

New question #691980 on Yade: https://answers.launchpad.net/yade/+question/691980 Hello, I am trying to build a shear flow simulation with the upper and bottom wall consists of sphere particles, and in the horizontal directions the periodic boundaries are applied. The shear flow is like the

Re: [Yade-users] [Question #692122]: how to add cohesion between box and spheres

Question #692122 on Yade changed: https://answers.launchpad.net/yade/+question/692122 Status: Answered => Solved Yuxuan Wen confirmed that the question is solved: Thanks Jérôme Duriez, that solved my question. -- You received this question notification because your team yade-us

[Yade-users] [Question #692122]: how to add cohesion between box and spheres

New question #692122 on Yade: https://answers.launchpad.net/yade/+question/692122 Dear YADE users, I am simulating the spheres falling down to a box plate under gravity. When the spheres touching the box plate, I want to add strong cohesive force between the spheres and box plate, so that

Re: [Yade-users] [Question #692067]: Sphere particles pass through the walls or facets under gravity

Question #692067 on Yade changed: https://answers.launchpad.net/yade/+question/692067 Yuxuan Wen posted a new comment: Thank you for your instruction, Jan! -- You received this question notification because your team yade-users is an answer contact for Yade

[Yade-users] [Question #692092]: Spheres don't move in periodicsandpile example if using wall

New question #692092 on Yade: https://answers.launchpad.net/yade/+question/692092 Hello, I have run the periodicSandPile.py example in https://gitlab.com/yade-dev/trunk/-/blob/master/examples/PeriodicBoundaries/periodicSandPile.py, which uses the box instead of wall or facet to be the plate

Re: [Yade-users] [Question #677858]: Periodic boundaries in one direction and load-controlled walls in the others

Question #677858 on Yade changed: https://answers.launchpad.net/yade/+question/677858 Yuxuan Wen posted a new comment: Hello Bruno, I am reading your paper that mentioned above and trying to formulate the same shear flow which is shown in your paper. I read your periodicSandPile.py code and take

Re: [Yade-users] [Question #691980]: How to generate the particle-wall in the shear flow

Question #691980 on Yade changed: https://answers.launchpad.net/yade/+question/691980 Status: Open => Solved Yuxuan Wen confirmed that the question is solved: Thank you Jan, that helps me a lot! -- You received this question notification because your team yade-users is an answer cont

Re: [Yade-users] [Question #677858]: Periodic boundaries in one direction and load-controlled walls in the others

Question #677858 on Yade changed: https://answers.launchpad.net/yade/+question/677858 Yuxuan Wen posted a new comment: Hello Jan, I am sorry... Next time I will open a new question. And thank you for your replying. Yes, in other examples there are always sp.toSimulation, it is my fault that I

Re: [Yade-users] [Question #692122]: how to add cohesion between box and spheres

Question #692122 on Yade changed: https://answers.launchpad.net/yade/+question/692122 Yuxuan Wen posted a new comment: Hello Jérôme, 1) Doing so, you're not adding anything, you're modifying something which has already been computed by YADE. Thank you for replying, now I understand

[Yade-users] [Question #692067]: Sphere particles pass through the walls or facets under gravity

New question #692067 on Yade: https://answers.launchpad.net/yade/+question/692067 Hello everyone, I run the scripts periodicSandPile.py as shown in: https://gitlab.com/yade-dev/trunk/blob/master/examples/PeriodicBoundaries/periodicSandPile.py where the bottom plate is made by box instead of wall

Re: [Yade-users] [Question #692067]: Sphere particles pass through the walls or facets under gravity

Question #692067 on Yade changed: https://answers.launchpad.net/yade/+question/692067 Status: Open => Solved Yuxuan Wen confirmed that the question is solved: Sorry I made a mistake, I will update a new problem. -- You received this question notification because your team yade-us

Re: [Yade-users] [Question #694110]: Interaction between the particles in a clump

Question #694110 on Yade changed: https://answers.launchpad.net/yade/+question/694110 Yuxuan Wen posted a new comment: Got it!! Thank you Jan and have a nice weekend!! Yuxuan Wen -- You received this question notification because your team yade-users is an answer contact for Yade

[Yade-users] [Question #694574]: ViscoEl contact normal stiffness kn in the source file is not consistent with that in the documentation

n*(dl1+dl2)=kn*(2*dl)=2*kn*dl=2*kn1*kn2/(kn1+kn2)*dl, and the new kn = 2*kn1*kn2/(kn1+kn2), that is exactly the kn expression in documentation. However, in the source file, this factor 2 is missing. Am I thinking correctly? Would you please help me? Thank you! Kind Rrgards, Yuxuan Wen --

Re: [Yade-users] [Question #692092]: Spheres don't move in periodicsandpile example if using wall

Question #692092 on Yade changed: https://answers.launchpad.net/yade/+question/692092 Status: Answered => Solved Yuxuan Wen confirmed that the question is solved: Thanks Jan Stránský, that solved my question. -- You received this question notification because your team yade-us

[Yade-users] [Question #694110]: Interaction between the particles in a clump

, instead, these interactions will be in a constant state. Am I thinking correctly? I will be much appreciated if anyone could help me, thank you! Regards, Yuxuan Wen -- You received this question notification because your team yade-users is an answer contact for Yade. _

Re: [Yade-users] [Question #694110]: Interaction between the particles in a clump

Question #694110 on Yade changed: https://answers.launchpad.net/yade/+question/694110 Status: Needs information => Open Yuxuan Wen gave more information on the question: Hello Jan, thank you for your reply! The example code is in the OP: Example ** O.bodies.append(sph

Re: [Yade-users] [Question #694110]: Interaction between the particles in a clump

Question #694110 on Yade changed: https://answers.launchpad.net/yade/+question/694110 Status: Needs information => Open Yuxuan Wen gave more information on the question: Hello Jan, thank you for your answer! - do you run in "clean" terminal? Can you try using a script file? Y

Re: [Yade-users] [Question #694110]: Interaction between the particles in a clump

Question #694110 on Yade changed: https://answers.launchpad.net/yade/+question/694110 Yuxuan Wen posted a new comment: Hello Jan, Thank you for your answer! It really helps! I think I need to update the YADE to the latest version. Kind Regards, Yuxuan -- You received this question

Re: [Yade-users] [Question #694110]: Interaction between the particles in a clump

Question #694110 on Yade changed: https://answers.launchpad.net/yade/+question/694110 Status: Answered => Solved Yuxuan Wen confirmed that the question is solved: Thanks Jan Stránský, that solved my question. -- You received this question notification because your team yade-us

Re: [Yade-users] [Question #697763]: The equation in documentation and the source code is not consistent

Question #697763 on Yade changed: https://answers.launchpad.net/yade/+question/697763 Status: Open => Solved Yuxuan Wen confirmed that the question is solved: Hello, This question is answered in https://answers.launchpad.net/yade/+question/694574. Thanks Yuxuan -- You recei

[Yade-users] [Question #697763]: The equation in documentation and the source code is not consistent

New question #697763 on Yade: https://answers.launchpad.net/yade/+question/697763 Hello, I am trying to use a viscoelastic contact model to do the simulation. In the documentation, it shows there are 4 options to assign the parameters and I choose to used the 3rd option, where kn1, ks1, kn2,

Re: [Yade-users] [Question #695935]: Floating point exception (core dumped)

Question #695935 on Yade changed: https://answers.launchpad.net/yade/+question/695935 Yuxuan Wen posted a new comment: Hello Dr. Chareyre, Thank you so much for your answer and your time on the debugging! I am sorry that I didn't reproduce a single script and reply to you last week. I am

Re: [Yade-users] [Question #695935]: Floating point exception (core dumped)

Question #695935 on Yade changed: https://answers.launchpad.net/yade/+question/695935 Status: Answered => Open Yuxuan Wen is still having a problem: Hello Robert and Jan, Thank you so much for the reply!!! Now I have make a MWE version, I delete all irrelevant and post-process comma

Re: [Yade-users] [Question #695935]: Floating point exception (core dumped)

Question #695935 on Yade changed: https://answers.launchpad.net/yade/+question/695935 Yuxuan Wen posted a new comment: Hello Jan, The code can be run in Yade 2020.1a, but can not be run correctly in Yadedaily. I wonder if it is possible that you could help me to take a look on Yadedaily

Re: [Yade-users] [Question #695935]: Floating point exception (core dumped)

Question #695935 on Yade changed: https://answers.launchpad.net/yade/+question/695935 Status: Open => Solved Yuxuan Wen confirmed that the question is solved: Thank you so much Jan!! Your comment has strengthen my confidence on Yadedaily. I am using Yadedaily in Ubuntu 20

Re: [Yade-users] [Question #695880]: When close the primary view, the simulation aborted and the terminal shows "Segmentation fault (core dumped)"

Question #695880 on Yade changed: https://answers.launchpad.net/yade/+question/695880 Status: Answered => Open Yuxuan Wen is still having a problem: Thank you so much Klaus!!! I am going to install YADE daily as you said. And may I ask you another question, that is how to uninstall the y

Re: [Yade-users] [Question #695880]: When close the primary view, the simulation aborted and the terminal shows "Segmentation fault (core dumped)"

Question #695880 on Yade changed: https://answers.launchpad.net/yade/+question/695880 Yuxuan Wen gave more information on the question: Is it "sudo apt-get remove yade" ?? Regards, Yuxuan -- You received this question notification because your team yade-users is an answer contac

Re: [Yade-users] [Question #695880]: When close the primary view, the simulation aborted and the terminal shows "Segmentation fault (core dumped)"

Question #695880 on Yade changed: https://answers.launchpad.net/yade/+question/695880 Status: Answered => Solved Yuxuan Wen confirmed that the question is solved: Thanks Klaus Thoeni, that solved my question. -- You received this question notification because your team yade-us

[Yade-users] [Question #695935]: Floating point exception (core dumped)

New question #695935 on Yade: https://answers.launchpad.net/yade/+question/695935 Hello, I was using Ubuntu 18.04 and Yade 2018.02b and the code was running good last year. But several days ago my Ubuntu updated to 20.04 automatically and Yade was also updated to 2020.01a version. Then I found

Re: [Yade-users] [Question #695935]: Floating point exception (core dumped)

Question #695935 on Yade changed: https://answers.launchpad.net/yade/+question/695935 Yuxuan Wen gave more information on the question: I run this file first: #- ## length (m), time (s), mass (1kg

Re: [Yade-users] [Question #695935]: Floating point exception (core dumped)

Question #695935 on Yade changed: https://answers.launchpad.net/yade/+question/695935 Yuxuan Wen gave more information on the question: And then I run the second file. The " Floating point exception (core dumped)" error will show when running

[Yade-users] [Question #695880]: When close the primary view, the simulation aborted and the terminal shows "Segmentation fault (core dumped)"

New question #695880 on Yade: https://answers.launchpad.net/yade/+question/695880 Hello, I am using Yade 2020.01a to do a simulation. I met a problem that when I click the "show 3D" to see the evolution of the simulation and then close the primary view directly, the simulation will be aborted

Re: [Yade-users] [Question #698392]: I calculated the kinetic energy by E=0.5mv^2+0.5Iw^2 but it is not equal to kineticEnergy() when O.cell.velGrad is set

Question #698392 on Yade changed: https://answers.launchpad.net/yade/+question/698392 Status: Answered => Open Yuxuan Wen is still having a problem: Hello Jan, Thank you for you help and sending me the position of the source code! I am much appreciated! But I am still a little confu

Re: [Yade-users] [Question #698392]: I calculated the kinetic energy by E=0.5mv^2+0.5Iw^2 but it is not equal to kineticEnergy() when O.cell.velGrad is set

Question #698392 on Yade changed: https://answers.launchpad.net/yade/+question/698392 Yuxuan Wen gave more information on the question: Hello Jan, Thanks for your suggestion, now I have created an issue on gitlab pages of the project [3]. Because I am still confused with the definition

[Yade-users] [Question #698392]: I calculated the kinetic energy by E=0.5mv^2+0.5Iw^2 but it is not equal to kineticEnergy() when O.cell.velGrad is set

New question #698392 on Yade: https://answers.launchpad.net/yade/+question/698392 Dear YADE developers and users, I am conducting a simulation where the energy results are important for the study. So I want to study how the kinetic energy is calculated in YADE. In the documentation it shows

Re: [Yade-users] [Question #698392]: I calculated the kinetic energy by E=0.5mv^2+0.5Iw^2 but it is not equal to kineticEnergy() when O.cell.velGrad is set

Question #698392 on Yade changed: https://answers.launchpad.net/yade/+question/698392 Status: Needs information => Open Yuxuan Wen gave more information on the question: Thank you Robert for your reply! Yes, I set the velGrad in the format as shown in the documentation: O.cell.velG

Re: [Yade-users] [Question #698392]: I calculated the kinetic energy by E=0.5mv^2+0.5Iw^2 but it is not equal to kineticEnergy() when O.cell.velGrad is set

Question #698392 on Yade changed: https://answers.launchpad.net/yade/+question/698392 Status: Answered => Solved Yuxuan Wen confirmed that the question is solved: Thank you so much Jan!! Now I understand the definition of fluctuation velocity and why it is chosen in Yade! Thanks ag

[Yade-users] [Question #698173]: The incremental contact shearforce is "-" in HertzMindlin and "+" in Viscoelastic models, which is opposite with each other.

ity; which can be found in line 125 of https://gitlab.com/yade-dev/trunk/-/blob/master/pkg/dem/ViscoelasticPM.cpp Best Regards, Yuxuan Wen -- You received this question notification because your team yade-users is an answer contact for Yade.