Re: [Yade-users] [Question #700843]: Difference between the internal friction angle of material and the interparticle friction angle?

Question #700843 on Yade changed: https://answers.launchpad.net/yade/+question/700843 Status: Answered => Solved Chien-Cheng Hung confirmed that the question is solved: Thanks Jérôme Duriez, that solved my question. -- You received this question notification because your team yade-us

Re: [Yade-users] [Question #700843]: Difference between the internal friction angle of material and the interparticle friction angle?

Question #700843 on Yade changed: https://answers.launchpad.net/yade/+question/700843 Status: Needs information => Open Chien-Cheng Hung gave more information on the question: Hi Jan, Sorry, let me make it clear. As far as I know, the friction angle we assign or modify in [1] and

Re: [Yade-users] [Question #678523]: frictionAngle vs μ(interparticle friction coefficient)

Question #678523 on Yade changed: https://answers.launchpad.net/yade/+question/678523 Chien-Cheng Hung posted a new comment: Okay, I will open a new question. Thanks! Chien-Cheng -- You received this question notification because your team yade-users is an answer contact for Yade

[Yade-users] [Question #700843]: Difference between the internal friction angle of material and the interparticle friction angle?

New question #700843 on Yade: https://answers.launchpad.net/yade/+question/700843 Hi all, According to the comments in [1], Luc mentioned not to mix up the internal friction angle of a material and the interparticle friction angle. I was wondering what the differences are between these two

Re: [Yade-users] [Question #678523]: frictionAngle vs μ(interparticle friction coefficient)

Question #678523 on Yade changed: https://answers.launchpad.net/yade/+question/678523 Chien-Cheng Hung requested more information: Hi Luc, Could you give some comments on the main difference between the internal friction angle of material and the interparticle friction angle? I couldn't find

Re: [Yade-users] [Question #697600]: Contact (dilation) angle between particles

Question #697600 on Yade changed: https://answers.launchpad.net/yade/+question/697600 Chien-Cheng Hung gave more information on the question: Just for further clarification. In 2D, if there are two particles of the same size in contact with each other in the horizontal direction

Re: [Yade-users] [Question #697600]: Contact (dilation) angle between particles

Question #697600 on Yade changed: https://answers.launchpad.net/yade/+question/697600 Status: Needs information => Open Chien-Cheng Hung gave more information on the question: Hi, The contact angle using here means dilation angle (ψ). The value of ψ=0 corresponds to the vol

[Yade-users] [Question #697600]: Contact (dilation) angle between particles

New question #697600 on Yade: https://answers.launchpad.net/yade/+question/697600 Hi all, I am simulating the direct shear of a granular assemblage with different particle size distributions (PSD) (e.g., normal distribution and power-law distribution). I want to output the contact angle

Re: [Yade-users] [Question #696700]: Interparticle friction coefficient in Hertz-Mindlin contact law

Question #696700 on Yade changed: https://answers.launchpad.net/yade/+question/696700 Status: Open => Solved Chien-Cheng Hung confirmed that the question is solved: I figured it out according to the comments in [1]. Thanks. [1] https://answers.launchpad.net/yade/+question/225776 --

[Yade-users] [Question #696700]: Interparticle friction coefficient in Hertz-Mindlin contact law

New question #696700 on Yade: https://answers.launchpad.net/yade/+question/696700 Hello, If I want to simulate a simple shear with the Hertz-Mindlin contact law with an interparticle friction coefficient of 0.5, is it correct to just set the friction angle as 0.5 in the O.material [1] for each

Re: [Yade-users] [Question #696150]: Output specific bodies using TW.setState

Question #696150 on Yade changed: https://answers.launchpad.net/yade/+question/696150 Status: Answered => Solved Chien-Cheng Hung confirmed that the question is solved: Thanks Karol Brzezinski, that solved my question. -- You received this question notification because your team yade-us

Re: [Yade-users] [Question #696150]: Output specific bodies using TW.setState

Question #696150 on Yade changed: https://answers.launchpad.net/yade/+question/696150 Status: Answered => Open Chien-Cheng Hung is still having a problem: Hi Karol, Thanks for showing me an example. In your example, why do you add sp.fromSimulation() after shiftBodies(...)? I can

Re: [Yade-users] [Question #696150]: Output specific bodies using TW.setState

Question #696150 on Yade changed: https://answers.launchpad.net/yade/+question/696150 Status: Answered => Open Chien-Cheng Hung is still having a problem: Hi Karol, Thank you for your reply. Those comments are very helpful. >> You set something like "O.bodies[i].state.dynami

Re: [Yade-users] [Question #696150]: Output specific bodies using TW.setState

Question #696150 on Yade changed: https://answers.launchpad.net/yade/+question/696150 Status: Answered => Open Chien-Cheng Hung is still having a problem: Hi Bruno, Thanks for your quick reply. I've minimized my script as much as possible. I also tested it and the running time sho

[Yade-users] [Question #696150]: Output specific bodies using TW.setState

New question #696150 on Yade: https://answers.launchpad.net/yade/+question/696150 Hi all, Followed by my previous question [1], I found that the output micro-strain VTK plain text file from the TW.defToVtk [2] cannot be opened in the Paraview if the DOFs (degree of freedoms) of particles are

Re: [Yade-users] [Question #694988]: Use of the yade.utils.psd

Question #694988 on Yade changed: https://answers.launchpad.net/yade/+question/694988 Status: Answered => Solved Chien-Cheng Hung confirmed that the question is solved: Thanks Karol Brzezinski, that solved my question. -- You received this question notification because your team yade-us

Re: [Yade-users] [Question #695851]: VTKRecorder: Aborted (core dumped) due to "intr" in VTKRecorder

Question #695851 on Yade changed: https://answers.launchpad.net/yade/+question/695851 Status: Needs information => Open Chien-Cheng Hung gave more information on the question: Hi Janek, I've tried to simplify my script as possible as I can. The MWE is below. Thank you for your time. Che

Re: [Yade-users] [Question #695851]: VTKRecorder: Aborted (core dumped) due to "intr" in VTKRecorder

Question #695851 on Yade changed: https://answers.launchpad.net/yade/+question/695851 Status: Answered => Open Chien-Cheng Hung is still having a problem: Hi Janek, Thanks for your reply! But I don't understand why I have zero interaction. In this direct shear simulation, particles

[Yade-users] [Question #695851]: VTKRecorder: Aborted (core dumped) due to "intr" in VTKRecorder

New question #695851 on Yade: https://answers.launchpad.net/yade/+question/695851 Hi all, I found that the terminal shows me "python3.5: /build/vtk6-YpT4yb/vtk6-6.2.0+dfsg1/IO/XML/vtkXMLOffsetsManager.h:142: void OffsetsManagerGroup::Allocate(int, int): Assertion `numElements > 0' failed.

Re: [Yade-users] [Question #695272]: Weighted averages of micro-stress tensor

Question #695272 on Yade changed: https://answers.launchpad.net/yade/+question/695272 Chien-Cheng Hung confirmed that the question is solved: Thanks Karol Brzezinski, that solved my question. -- You received this question notification because your team yade-users is an answer contact for Yade

Re: [Yade-users] [Question #695272]: Weighted averages of micro-stress tensor

Question #695272 on Yade changed: https://answers.launchpad.net/yade/+question/695272 Status: Answered => Solved Chien-Cheng Hung confirmed that the question is solved: Hi Karol, Yes, you are right. Sorry I didn't read it carefully. Thanks for clearing that up! Chien-Cheng --

[Yade-users] [Question #695272]: Weighted averages of micro-stress tensor

New question #695272 on Yade: https://answers.launchpad.net/yade/+question/695272 Dear all, I am trying to plot the micro stress [1] as a function of particle position the same as figure 10 in Catalano et al. (2014) [2]. The thing I don't really understand is the micro stress obtained from [1]

[Yade-users] [Question #694988]: Use of the yade.utils.psd

New question #694988 on Yade: https://answers.launchpad.net/yade/+question/694988 Dear all, I am trying to create a packing with log-normal particle size distribution. I use yade.utils.psd [1] and [2] to check if the size distribution of the packing is consistent with the values I give. It

Re: [Yade-users] [Question #694556]: Imported spheres go through the walls

Question #694556 on Yade changed: https://answers.launchpad.net/yade/+question/694556 Status: Answered => Solved Chien-Cheng Hung confirmed that the question is solved: Hi Jan, Thanks for your detailed explanation, it works! Appreciate your help! Cheers, Chien-Cheng -- You recei

Re: [Yade-users] [Question #694556]: Imported spheres go through the walls

Question #694556 on Yade changed: https://answers.launchpad.net/yade/+question/694556 Chien-Cheng Hung confirmed that the question is solved: Thanks Jan Stránský, that solved my question. -- You received this question notification because your team yade-users is an answer contact for Yade

[Yade-users] [Question #694556]: Imported spheres go through the walls

New question #694556 on Yade: https://answers.launchpad.net/yade/+question/694556 Dear all, I find a question that is weird to me. This question is followed by my previous one [1]. I've created and saved a stress-free dense packing with a script (MWE 1) and then I load it with another script

Re: [Yade-users] [Question #694379]: How to freeze the particles in the imported dense granular packing

Question #694379 on Yade changed: https://answers.launchpad.net/yade/+question/694379 Status: Answered => Open Chien-Cheng Hung is still having a problem: Hi Jan, Thanks for your reply. > Basic dualism in mechanics, either you know/prescribe displacement (rotation,strain,...) or

[Yade-users] [Question #694379]: How to freeze the particles in the imported dense granular packing

New question #694379 on Yade: https://answers.launchpad.net/yade/+question/694379 Hi all, This question follows my previous one [1]. After successfully imported a dense packing with a specific range of size, I would like to further isotropically compress the cropped dense packing with

Re: [Yade-users] [Question #694288]: Crop a specific range of the imported packing and distribute it to a specific position

Question #694288 on Yade changed: https://answers.launchpad.net/yade/+question/694288 Status: Answered => Solved Chien-Cheng Hung 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 #694288]: Crop a specific range of the imported packing and distribute it to a specific position

Question #694288 on Yade changed: https://answers.launchpad.net/yade/+question/694288 Status: Needs information => Open Chien-Cheng Hung gave more information on the question: > Also, what is "particles", "a pack", ...? Sorry, it should be just "a packing

Re: [Yade-users] [Question #694288]: Crop a specific range of the imported packing and distribute it to a specific position

Question #694288 on Yade changed: https://answers.launchpad.net/yade/+question/694288 Status: Solved => Open Chien-Cheng Hung is still having a problem: Hi Jan, Is it possible that you could show me an example about how to move particles? For example, a pack of particles range from (0,

Re: [Yade-users] [Question #694288]: Crop a specific range of the imported packing and distribute it to a specific position

Question #694288 on Yade changed: https://answers.launchpad.net/yade/+question/694288 Status: Open => Solved Chien-Cheng Hung 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 #694288]: Crop a specific range of the imported packing and distribute it to a specific position

Question #694288 on Yade changed: https://answers.launchpad.net/yade/+question/694288 Status: Answered => Open Chien-Cheng Hung is still having a problem: Hi Jan, Thanks for your quick reply. > randomDensePack itself does not support psd input, but the code can be "copy-paste

[Yade-users] [Question #694288]: Crop a specific range of the imported packing and distribute it to a specific position

New question #694288 on Yade: https://answers.launchpad.net/yade/+question/694288 Dear all, I am trying to simulate a direct shear experiment on a dense packing with particle size distribution (PSD). For creating a dense packing with PSD, I use makeCloud to generate a loose packing first and

Re: [Yade-users] [Question #692823]: How to output a list throughout timestep

Question #692823 on Yade changed: https://answers.launchpad.net/yade/+question/692823 Chien-Cheng Hung posted a new comment: Hi Robert, Thanks for your answer. I use another way which is basically the same: np.savetxt(OUT+'-Force-%s' % O.iter,list_force, delimiter=',') Cheers, Chien-Cheng

Re: [Yade-users] [Question #692823]: How to output a list throughout timestep

Question #692823 on Yade changed: https://answers.launchpad.net/yade/+question/692823 Status: Open => Solved Chien-Cheng Hung confirmed that the question is solved: problem solved -- You received this question notification because your team yade-users is an answer contact for Y

[Yade-users] [Question #692823]: How to output a list throughout timestep

New question #692823 on Yade: https://answers.launchpad.net/yade/+question/692823 Hi all, I am simulating a direct shear experiment with a granular layer. I would like to see how the force in the X direction (O.force(b).[1]) transmit within the granular layer during initial shearing. I define a

Re: [Yade-users] [Question #691407]: Paraview crashes when pressing apply buttom of the micro-strain vtk file

Question #691407 on Yade changed: https://answers.launchpad.net/yade/+question/691407 Status: Open => Solved Chien-Cheng Hung confirmed that the question is solved: Hi Jan, I think I find the reason why the microstrain vtk file crashed. The vtk file can be applied in Paraview w

Re: [Yade-users] [Question #691407]: Paraview crashes when pressing apply buttom of the micro-strain vtk file

Question #691407 on Yade changed: https://answers.launchpad.net/yade/+question/691407 Chien-Cheng Hung posted a new comment: Hi Jan, Sorry for my inconsistency and thank you for your time. I will keep looking for other possibilities. Cheers, Chien-Cheng -- You received this question

Re: [Yade-users] [Question #691407]: Paraview crashes when pressing apply buttom of the micro-strain vtk file

Question #691407 on Yade changed: https://answers.launchpad.net/yade/+question/691407 Chien-Cheng Hung gave more information on the question: Hi Jan, Thanks for your email. I've tested your microstrain vtk file and it works with my Paraview. So I think the crash is not related to the Paraview

Re: [Yade-users] [Question #691407]: Paraview crashes when pressing apply buttom of the micro-strain vtk file

Question #691407 on Yade changed: https://answers.launchpad.net/yade/+question/691407 Chien-Cheng Hung gave more information on the question: Hi Jan, I've updated my Yade version to the latest one - 2020-06-23.git-f03a37c and reran the simulation to get a new microstrain file. But the Paraview

Re: [Yade-users] [Question #691407]: Paraview crashes when pressing apply buttom of the micro-strain vtk file

Question #691407 on Yade changed: https://answers.launchpad.net/yade/+question/691407 Status: Answered => Open Chien-Cheng Hung is still having a problem: Hi Jan, Thanks for helping me test the file. Would you suggest me to update the Yade version to 2020-04-26.git- 59c7045 and re

Re: [Yade-users] [Question #691407]: Paraview crashes when pressing apply buttom of the micro-strain vtk file

Question #691407 on Yade changed: https://answers.launchpad.net/yade/+question/691407 Status: Needs information => Open Chien-Cheng Hung gave more information on the question: Hi Jan, Thanks for your quick reply. > Are you using the script from [1], or something else? I am using th

[Yade-users] [Question #691407]: Paraview crashes when pressing apply buttom of the micro-strain vtk file

New question #691407 on Yade: https://answers.launchpad.net/yade/+question/691407 Dear all, I am not sure this question is suitable to be asked here but I really can't figure it out. I am simulating direct shear experiments and trying to visualize the micro-strain field after shearing by using

Re: [Yade-users] [Question #690948]: Making a sphere layer with certain orientation

Question #690948 on Yade changed: https://answers.launchpad.net/yade/+question/690948 Status: Answered => Solved Chien-Cheng Hung 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 #690948]: Making a sphere layer with certain orientation

Question #690948 on Yade changed: https://answers.launchpad.net/yade/+question/690948 Status: Answered => Open Chien-Cheng Hung is still having a problem: Hi Jan, Thanks for your information. It's very useful. I tried to apply the same trick to "sp.makeCloud()" because

Re: [Yade-users] [Question #690948]: Making a sphere layer with certain orientation

Question #690948 on Yade changed: https://answers.launchpad.net/yade/+question/690948 Status: Needs information => Open Chien-Cheng Hung gave more information on the question: Hi Jan, Thanks for your quick reply! > - what "sphere layer" is I should say a "gr

[Yade-users] [Question #690948]: Making a sphere layer with certain orientation

New question #690948 on Yade: https://answers.launchpad.net/yade/+question/690948 Dear all, I am trying to generating a sphere layer with a certain orientation. For example, I would like to generate a layer intersecting Z-axis with 45 degrees (taking X-axis as the front). Is it possible to do

Re: [Yade-users] [Question #689234]: How to export relative velocity of spheres to Paraview

Question #689234 on Yade changed: https://answers.launchpad.net/yade/+question/689234 Status: Answered => Solved Chien-Cheng Hung confirmed that the question is solved: Thanks, Jan. That's really helpful! -- You received this question notification because your team yade-users is an ans

Re: [Yade-users] [Question #689234]: How to export relative velocity of spheres to Paraview

Question #689234 on Yade changed: https://answers.launchpad.net/yade/+question/689234 Status: Solved => Open Chien-Cheng Hung is still having a problem: Hi Jan, In my "vtk.exportInteractions" command, I don't want to export the interactions that are related to O.bodies[0] a

Re: [Yade-users] [Question #689234]: How to export relative velocity of spheres to Paraview

Question #689234 on Yade changed: https://answers.launchpad.net/yade/+question/689234 Status: Answered => Solved Chien-Cheng Hung 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 #689234]: How to export relative velocity of spheres to Paraview

Question #689234 on Yade changed: https://answers.launchpad.net/yade/+question/689234 Status: Answered => Open Chien-Cheng Hung is still having a problem: Hi Jan, Thanks for your reply. I still get the same error message after following your instruction. The complete error mess

Re: [Yade-users] [Question #689234]: How to export relative velocity of spheres to Paraview

Question #689234 on Yade changed: https://answers.launchpad.net/yade/+question/689234 Chien-Cheng Hung gave more information on the question: Hi Jan, I would like to export the function in vtk files as below. I adjust the body of function unlike the above you showed me. But it shows me

Re: [Yade-users] [Question #689234]: How to export relative velocity of spheres to Paraview

Question #689234 on Yade changed: https://answers.launchpad.net/yade/+question/689234 Status: Solved => Open Chien-Cheng Hung is still having a problem: Hi Jan, I would like to export the function in vtk files as below. I adjust the body of function unlike the above you showed

Re: [Yade-users] [Question #690020]: Rolling friction coefficient in Hertz-Mindlin contact law

Question #690020 on Yade changed: https://answers.launchpad.net/yade/+question/690020 Status: Answered => Solved Chien-Cheng Hung 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 #690020]: Rolling friction coefficient in Hertz-Mindlin contact law

New question #690020 on Yade: https://answers.launchpad.net/yade/+question/690020 Dear all, I found from the previous question that the rolling resistance is implemented in Hertz-Mindlin contact law [1][2][3]. As far as I know, rolling resistance can be defined by the rolling stiffness (Krot)

Re: [Yade-users] [Question #689919]: Accumulation effect of heat over time steps

Question #689919 on Yade changed: https://answers.launchpad.net/yade/+question/689919 Status: Answered => Solved Chien-Cheng Hung confirmed that the question is solved: Hi Jan, My mistake... the iterPeriod value I input for "someCalculator.collect()" and "som

Re: [Yade-users] [Question #689919]: Accumulation effect of heat over time steps

Question #689919 on Yade changed: https://answers.launchpad.net/yade/+question/689919 Chien-Cheng Hung confirmed that the question is solved: Thanks Jan Stránský, that solved my question. -- You received this question notification because your team yade-users is an answer contact for Yade

Re: [Yade-users] [Question #689919]: Accumulation effect of heat over time steps

Question #689919 on Yade changed: https://answers.launchpad.net/yade/+question/689919 Status: Answered => Open Chien-Cheng Hung is still having a problem: Hi Jan, Thanks again for your reply and suggestion. I am still learning programming with Python and am also a beginner in Yade. I

Re: [Yade-users] [Question #689919]: Accumulation effect of heat over time steps

Question #689919 on Yade changed: https://answers.launchpad.net/yade/+question/689919 Status: Solved => Open Chien-Cheng Hung is still having a problem: Dear Jan, Sorry that I still have one more question... If I would like to further use the cumulative data to calculate other paramet

Re: [Yade-users] [Question #689919]: Accumulation effect of heat over time steps

Question #689919 on Yade changed: https://answers.launchpad.net/yade/+question/689919 Chien-Cheng Hung confirmed that the question is solved: Thanks Jan Stránský, that solved my question. -- You received this question notification because your team yade-users is an answer contact for Yade

Re: [Yade-users] [Question #689919]: Accumulation effect of heat over time steps

Question #689919 on Yade changed: https://answers.launchpad.net/yade/+question/689919 Status: Answered => Solved Chien-Cheng Hung confirmed that the question is solved: Thanks, Jan! This really solves my questions. Thanks again for your help! -- You received this question notificat

Re: [Yade-users] [Question #689919]: Accumulation effect of heat over time steps

Question #689919 on Yade changed: https://answers.launchpad.net/yade/+question/689919 Status: Needs information => Open Chien-Cheng Hung gave more information on the question: >is it possible to make it run shorter to demonstrate the error? Yes, I also adjusted other parameters t

Re: [Yade-users] [Question #689919]: Accumulation effect of heat over time steps

Question #689919 on Yade changed: https://answers.launchpad.net/yade/+question/689919 Status: Answered => Open Chien-Cheng Hung is still having a problem: Dear Jan, I simplified my script and hope that you could have a look. ### from __future__ import print_function import built

Re: [Yade-users] [Question #689919]: Accumulation effect of heat over time steps

Question #689919 on Yade changed: https://answers.launchpad.net/yade/+question/689919 Status: Answered => Open Chien-Cheng Hung is still having a problem: Hi Jan, Many thanks again! This time I got some errors as below. The cumulative data can still be printed out but the exported vtk f

Re: [Yade-users] [Question #689919]: Accumulation effect of heat over time steps

Question #689919 on Yade changed: https://answers.launchpad.net/yade/+question/689919 Status: Answered => Open Chien-Cheng Hung is still having a problem: Hi Jan, Thanks for your code and prompt reply! It works well. So if I want to export these accumulate values and visual

[Yade-users] [Question #689919]: Accumulation effect of heat over time steps

New question #689919 on Yade: https://answers.launchpad.net/yade/+question/689919 Dear all, I am trying to simulate the heat generation at the contacts of all interacting spheres over time steps. Considering generated heat at each time step can accumulate on the contact through time, how can I

Re: [Yade-users] [Question #689234]: How to export relative velocity of spheres to Paraview

Question #689234 on Yade changed: https://answers.launchpad.net/yade/+question/689234 Status: Answered => Solved Chien-Cheng Hung 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 #689439]: How to glue spheres to the box?

Question #689439 on Yade changed: https://answers.launchpad.net/yade/+question/689439 Status: Answered => Open Chien-Cheng Hung is still having a problem: Hi Jan, Thanks for your reply! > please be more specific. I have tried your code, and it seemed to work ok (the box and bo

[Yade-users] [Question #689439]: How to glue spheres to the box?

New question #689439 on Yade: https://answers.launchpad.net/yade/+question/689439 Dear all, I am trying to simulate direct shear experiments. In my simulation, the periodic boundary condition is applied and in addition, the top and bottom are confined by a box. To simulate a rough boundary

Re: [Yade-users] [Question #689234]: How to export relative velocity of spheres to Paraview

Question #689234 on Yade changed: https://answers.launchpad.net/yade/+question/689234 Status: Answered => Open Chien-Cheng Hung is still having a problem: Hi Jan, Thanks a lot! > you can write a function to it and call the function in exportInteractions / exportContact

Re: [Yade-users] [Question #689234]: How to export relative velocity of spheres to Paraview

Question #689234 on Yade changed: https://answers.launchpad.net/yade/+question/689234 Status: Answered => Open Chien-Cheng Hung is still having a problem: Hi Jan, Thanks for your quick reply! > relative velocity with respect to what? relative velocity of interacting bodies f

[Yade-users] [Question #689234]: How to export relative velocity of spheres to Paraview

New question #689234 on Yade: https://answers.launchpad.net/yade/+question/689234 Hi all, I am simulating direct shear experiments and I would like to visualize the relative velocity of all interacted spheres. I've tried to record the interaction of bodies using VTKRecorder but it seems there