Re: [Yade-users] [Question #697523]: When adding O.wait(), the graphical interface is black

2021-06-14 Thread Zhicheng Gao
Question #697523 on Yade changed: https://answers.launchpad.net/yade/+question/697523 Status: Answered => Solved Zhicheng Gao confirmed that the question is solved: Thanks, Jan. I just want to make a video about the process by capturing screen output. According to your answer, I will cha

[Yade-users] [Question #697526]: CHOLMOD warning: matrix not positive definite

2021-06-14 Thread Zhicheng Gao
New question #697526 on Yade: https://answers.launchpad.net/yade/+question/697526 Hello, I reinstalled Yade from the source code,the version is yade-2021-06-08.git-4852d56, and the version of Ubuntu is 18.04. I tried to delete the particles. There is no problem with the FlowEngine, but the

[Yade-users] [Question #697523]: When adding O.wait(), the graphical interface is black

2021-06-14 Thread Zhicheng Gao
New question #697523 on Yade: https://answers.launchpad.net/yade/+question/697523 I set a target porosity as a stop criterion and used O.run() to run simulation. In order to avoid the influence of the later Python code, I added O.wait(). However, after adding this command, the graphical

[Yade-users] [Question #697524]: When I run my code, MatplotlibDeprecationWarning appears

2021-06-14 Thread Zhicheng Gao
New question #697524 on Yade: https://answers.launchpad.net/yade/+question/697524 When I run my code, the following warning appears: /usr/lib/python3/dist-packages/matplotlib/__init__.py:831: MatplotlibDeprecationWarning: axes.color_cycle is deprecated and replaced with axes.prop_cycle; please

Re: [Yade-users] [Question #697432]: Why doesn't the strain equal to zero

2021-06-07 Thread Zhicheng Gao
Question #697432 on Yade changed: https://answers.launchpad.net/yade/+question/697432 Status: Answered => Solved Zhicheng Gao 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 #697433]: Instantiating a new FlowEngine after removing does not work

2021-06-07 Thread Zhicheng Gao
Question #697433 on Yade changed: https://answers.launchpad.net/yade/+question/697433 Status: Answered => Open Zhicheng Gao is still having a problem: The links are as follows: https://answers.launchpad.net/yade/+question/452277 https://answers.launchpad.net/yade/+question/670889 --

Re: [Yade-users] [Question #697433]: Instantiating a new FlowEngine after removing does not work

2021-06-12 Thread Zhicheng Gao
Question #697433 on Yade changed: https://answers.launchpad.net/yade/+question/697433 Status: Answered => Solved Zhicheng Gao confirmed that the question is solved: Thank you. I'll try your advice. It helps me a lot. Thank you very much -- You received this question notification beca

Re: [Yade-users] [Question #697433]: Instantiating a new FlowEngine after removing does not work

2021-06-10 Thread Zhicheng Gao
Question #697433 on Yade changed: https://answers.launchpad.net/yade/+question/697433 Status: Answered => Open Zhicheng Gao is still having a problem: Dear Robert, I'm doing erosion experiments, so I need to delete particles many times, maybe 1 times, maybe more. According to y

Re: [Yade-users] [Question #697526]: CHOLMOD warning: matrix not positive definite

2021-06-17 Thread Zhicheng Gao
Question #697526 on Yade changed: https://answers.launchpad.net/yade/+question/697526 Zhicheng Gao gave more information on the question: The paper[1] link is https://www.sciencedirect.com/science/article/pii/S0266352X17303087 -- You received this question notification because your team yade

Re: [Yade-users] [Question #697526]: CHOLMOD warning: matrix not positive definite

2021-06-17 Thread Zhicheng Gao
Question #697526 on Yade changed: https://answers.launchpad.net/yade/+question/697526 Status: Answered => Open Zhicheng Gao is still having a problem: Hello, Bruno. Thank you very much for your reply. I'm doing research similar to the paper " A discrete numerical model involving

Re: [Yade-users] [Question #697433]: Instantiating a new FlowEngine after removing does not work

2021-06-20 Thread Zhicheng Gao
Question #697433 on Yade changed: https://answers.launchpad.net/yade/+question/697433 Status: Open => Solved Zhicheng Gao 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 #697260]: are the vertices of the cell the center of the sphere

2021-06-20 Thread Zhicheng Gao
Question #697260 on Yade changed: https://answers.launchpad.net/yade/+question/697260 Zhicheng Gao confirmed that the question is solved: Thanks Robert Caulk, that solved my question. -- You received this question notification because your team yade-users is an answer contact for Yade

Re: [Yade-users] [Question #697526]: CHOLMOD warning: matrix not positive definite

2021-06-20 Thread Zhicheng Gao
Question #697526 on Yade changed: https://answers.launchpad.net/yade/+question/697526 Zhicheng Gao posted a new comment: Hi, I have searched for the answers about the PeriodicFlowEngine. I concluded that since there is no boundary condition for periodic boundary conditions

Re: [Yade-users] [Question #697524]: When I run my code, MatplotlibDeprecationWarning appears

2021-06-21 Thread Zhicheng Gao
Question #697524 on Yade changed: https://answers.launchpad.net/yade/+question/697524 Status: Answered => Solved Zhicheng Gao confirmed that the question is solved: Thank you, Jérôme Duriez , the version used is yade-2021-06-08.git- 4852d56 -- You received this question notificat

[Yade-users] [Question #697642]: Many errors with PeriodicFlowEngine

2021-06-21 Thread Zhicheng Gao
New question #697642 on Yade: https://answers.launchpad.net/yade/+question/697642 After deleting some particles, I encountered a lot of problems in the PeriodicFlowEngine. Such as: (1) GS did not converge in 20k iterations (maybe because the reference pressure is 0?); (2) segmentation fault

Re: [Yade-users] [Question #697526]: CHOLMOD warning: matrix not positive definite

2021-06-15 Thread Zhicheng Gao
Question #697526 on Yade changed: https://answers.launchpad.net/yade/+question/697526 Zhicheng Gao posted a new comment: Can anyone provide some help, thank you very much! -- You received this question notification because your team yade-users is an answer contact for Yade

Re: [Yade-users] [Question #697433]: Instantiating a new FlowEngine after removing does not work

2021-06-14 Thread Zhicheng Gao
Question #697433 on Yade changed: https://answers.launchpad.net/yade/+question/697433 Status: Solved => Open Zhicheng Gao is still having a problem: Dear Robert, I reinstalled Yade from the source code,the version is yade-2021-06-08.git-4852d56, and the version of Ubuntu is 18.04.I tr

Re: [Yade-users] [Question #697433]: Instantiating a new FlowEngine after removing does not work

2021-06-08 Thread Zhicheng Gao
Question #697433 on Yade changed: https://answers.launchpad.net/yade/+question/697433 Zhicheng Gao gave more information on the question: Can anyone help? Thank you very much! -- You received this question notification because your team yade-users is an answer contact for Yade

Re: [Yade-users] [Question #697103]: Under the condition of periodic boundary, do I need to set the size of the cell?

2021-05-19 Thread Zhicheng Gao
Question #697103 on Yade changed: https://answers.launchpad.net/yade/+question/697103 Status: Answered => Solved Zhicheng Gao confirmed that the question is solved: OK, tank you -- You received this question notification because your team yade-users is an answer contact for Y

[Yade-users] [Question #697139]: How to modify the rolling resistance

2021-05-19 Thread Zhicheng Gao
New question #697139 on Yade: https://answers.launchpad.net/yade/+question/697139 I want to generate a dense sand assembly. Considering the particle shape and the residual strength in the triaxial test, I need to set the rolling resistance. But if I want to get a dense sand specimen, I need to

Re: [Yade-users] [Question #697100]: Why is there no cell size in the example Periodic triaxial test

2021-05-19 Thread Zhicheng Gao
Question #697100 on Yade changed: https://answers.launchpad.net/yade/+question/697100 Status: Answered => Solved Zhicheng Gao confirmed that the question is solved: Thanks, that solved my question -- You received this question notification because your team yade-users is an answer cont

[Yade-users] [Question #697103]: Under the condition of periodic boundary, do I need to set the size of the cell?

2021-05-17 Thread Zhicheng Gao
New question #697103 on Yade: https://answers.launchpad.net/yade/+question/697103 Hi, I would like to do a triaxial test under periodic boundary conditions. The particle size distribution, particle number and porosity is known, but the size of the soil sample is unknown, can I not set the size

[Yade-users] [Question #697100]: Why is there no cell size in the example Periodic triaxial test

2021-05-17 Thread Zhicheng Gao
New question #697100 on Yade: https://answers.launchpad.net/yade/+question/697100 Hi, I read the example Periodic triaxial test[1], but I have a question, why does the period boundary not set the dimension of the cell, that is, why did not use O.cell.hSize to set the size of cell ? Doesn't

Re: [Yade-users] [Question #697079]: When I use the periodic boundary, whether the packing to be generated should be periodic

2021-05-17 Thread Zhicheng Gao
Question #697079 on Yade changed: https://answers.launchpad.net/yade/+question/697079 Status: Needs information => Open Zhicheng Gao gave more information on the question: Jan, thanks a lot for your response. I mean that the packings are all periodically generated by setting the parame

Re: [Yade-users] [Question #697079]: When I use the periodic boundary, whether the packing to be generated should be periodic

2021-05-17 Thread Zhicheng Gao
Question #697079 on Yade changed: https://answers.launchpad.net/yade/+question/697079 Status: Answered => Solved Zhicheng Gao 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 #697079]: When I use the periodic boundary, whether the packing to be generated should be periodic

2021-05-16 Thread Zhicheng Gao
New question #697079 on Yade: https://answers.launchpad.net/yade/+question/697079 I want to choose the periodic boundary, and I want use the function makeCloud in class SpherePack. Whether I should set the parameter periodic to True. -- You received this question notification because your team

Re: [Yade-users] [Question #697195]: How to set the PeriodicFlowEngine

2021-05-24 Thread Zhicheng Gao
Question #697195 on Yade changed: https://answers.launchpad.net/yade/+question/697195 Status: Answered => Solved Zhicheng Gao confirmed that the question is solved: Thanks Bruno Chareyre, that solved my question. -- You received this question notification because your team yade-us

Re: [Yade-users] [Question #697259]: What are the forces on the particle from function O.forces.f()

2021-05-26 Thread Zhicheng Gao
Question #697259 on Yade changed: https://answers.launchpad.net/yade/+question/697259 Zhicheng Gao posted a new comment: I also want to know how to get the magnitude of each contact force of a particle. Thank you -- You received this question notification because your team yade-users

[Yade-users] [Question #697260]: are the vertices of the cell the center of the sphere

2021-05-26 Thread Zhicheng Gao
New question #697260 on Yade: https://answers.launchpad.net/yade/+question/697260 I use the PeriodicFlowEngine to simulate flow in assembly and it is labeled as flow. Is the cell of the engine formed with the center of four spheres as the vertex? If so, can I get the four spheres that formed

[Yade-users] [Question #697259]: What are the forces on the particle from function O.forces.f()

2021-05-26 Thread Zhicheng Gao
New question #697259 on Yade: https://answers.launchpad.net/yade/+question/697259 I get the fluid force on all the particles of an assembly through the flow engine by function flow.fluidForce(ballid) , then I apply the force on all particles for 1000 steps by function

Re: [Yade-users] [Question #697260]: are the vertices of the cell the center of the sphere

2021-05-28 Thread Zhicheng Gao
Question #697260 on Yade changed: https://answers.launchpad.net/yade/+question/697260 Zhicheng Gao posted a new comment: Dear Chareyre, thank you for your reply. I would like to know how to determine which three bodies are on the shared facet for such two cells. -- You received this question

[Yade-users] [Question #697336]: How to close the function doneHook in PeriTriaxController

2021-06-01 Thread Zhicheng Gao
New question #697336 on Yade: https://answers.launchpad.net/yade/+question/697336 I don't want to call any Python command again when the sample is isotropic compacted, so I set doneHook=uninitalized. Is that right? The code of mine is shown below: ##__ First section, generate

Re: [Yade-users] [Question #697195]: How to set the PeriodicFlowEngine

2021-05-21 Thread Zhicheng Gao
Question #697195 on Yade changed: https://answers.launchpad.net/yade/+question/697195 Zhicheng Gao gave more information on the question: [1]https://link.springer.com/article/10.1007/s11242-011-9915-6 -- You received this question notification because your team yade-users is an answer contact

Re: [Yade-users] [Question #697259]: What are the forces on the particle from function O.forces.f()

2021-05-27 Thread Zhicheng Gao
Question #697259 on Yade changed: https://answers.launchpad.net/yade/+question/697259 Zhicheng Gao posted a new comment: Thank you for your response. The problem is that I apply a force on a body via function O.forces.setPermF(), and then I use function O.forces.f() to get the resultant

Re: [Yade-users] [Question #697259]: What are the forces on the particle from function O.forces.f()

2021-05-27 Thread Zhicheng Gao
Question #697259 on Yade changed: https://answers.launchpad.net/yade/+question/697259 Status: Answered => Solved Zhicheng Gao confirmed that the question is solved: Thank you for your answer, which also brings me some ideas to solve the problem -- You received this question notificat

Re: [Yade-users] [Question #697260]: are the vertices of the cell the center of the sphere

2021-05-27 Thread Zhicheng Gao
Question #697260 on Yade changed: https://answers.launchpad.net/yade/+question/697260 Zhicheng Gao posted a new comment: Dear Robert, Thank you for your answer. Whether function flow.getVertices(cellid) returns the coordinates of four vertices, so how can I get the id of the sphere from

Re: [Yade-users] [Question #697260]: are the vertices of the cell the center of the sphere

2021-05-27 Thread Zhicheng Gao
Question #697260 on Yade changed: https://answers.launchpad.net/yade/+question/697260 Status: Answered => Solved Zhicheng Gao confirmed that the question is solved: Thank you Robert, this solved problem. -- You received this question notification because your team yade-users is an ans

Re: [Yade-users] [Question #697421]: The problem of plot

2021-06-06 Thread Zhicheng Gao
Question #697421 on Yade changed: https://answers.launchpad.net/yade/+question/697421 Status: Answered => Open Zhicheng Gao is still having a problem: Thanks, Janek. I still have a problem, I use the O.cell.trsf=Matrix3.Identity to set the current cell configuration to be the reference

[Yade-users] [Question #697421]: The problem of plot

2021-06-05 Thread Zhicheng Gao
New question #697421 on Yade: https://answers.launchpad.net/yade/+question/697421 The first problem is that when I run my code, the following exceptions and errors occur: Unhandled exception in thread started by Traceback (most recent call last): File

Re: [Yade-users] [Question #697421]: The problem of plot

2021-06-06 Thread Zhicheng Gao
Question #697421 on Yade changed: https://answers.launchpad.net/yade/+question/697421 Zhicheng Gao gave more information on the question: this is my code: ##__ First section, generate sample_ from __future__ import print_function from yade import pack, qt, plot from math

Re: [Yade-users] [Question #697421]: The problem of plot

2021-06-06 Thread Zhicheng Gao
Question #697421 on Yade changed: https://answers.launchpad.net/yade/+question/697421 Zhicheng Gao gave more information on the question: Dear Janek, According to your suggestion, I add plot.setLiveForceAlwaysUpdate(True) to my code, but the following error occurred: Traceback (most recent

[Yade-users] [Question #697432]: Why doesn't the strain equal to zero

2021-06-06 Thread Zhicheng Gao
New question #697432 on Yade: https://answers.launchpad.net/yade/+question/697432 I use the O.cell.trsf=Matrix3.Identity to set the current cell configuration to be the reference one, but when I use print(O.cell.trsf, triax.strain) to print the current strain, the strain matrix is not equal to

Re: [Yade-users] [Question #697421]: The problem of plot

2021-06-06 Thread Zhicheng Gao
Question #697421 on Yade changed: https://answers.launchpad.net/yade/+question/697421 Status: Answered => Solved Zhicheng Gao confirmed that the question is solved: Thanks Janek Kozicki, that solved my question. -- You received this question notification because your team yade-us

[Yade-users] [Question #697433]: Instantiating a new FlowEngine after removing does not work

2021-06-06 Thread Zhicheng Gao
New question #697433 on Yade: https://answers.launchpad.net/yade/+question/697433 Hi, I'm also trying to remove some particles from the simulation while using FlowEngine engine to simulate a fluid flow. According to Questions #452277 and #670889, I used the simple method of instantiating a

Re: [Yade-users] [Question #697432]: Why doesn't the strain equal to zero

2021-06-07 Thread Zhicheng Gao
Question #697432 on Yade changed: https://answers.launchpad.net/yade/+question/697432 Status: Needs information => Open Zhicheng Gao gave more information on the question: I'm sorry to provide a lot of useless code, the key code is : O.cell.trsf=Matrix3.Identity print(O.cell.t

Re: [Yade-users] [Question #697260]: are the vertices of the cell the center of the sphere

2021-05-28 Thread Zhicheng Gao
Question #697260 on Yade changed: https://answers.launchpad.net/yade/+question/697260 Status: Solved => Open Zhicheng Gao is still having a problem: Hello, I have a new problem, The code is shown below: .periodic=True O.cell.hSize=Matrix3(2,0,0, 0,2,0, 0,0,2) s0=utils.sphere((0.3,0.3,

[Yade-users] [Question #697195]: How to set the PeriodicFlowEngine

2021-05-21 Thread Zhicheng Gao
New question #697195 on Yade: https://answers.launchpad.net/yade/+question/697195 I build the scene in the periodic boundary, so there are no walls. Does that mean I should use flow.boundaryUseMaxMin= [1,1,1,1,1,1], given that the label of PeriodicFlowEngine is set to flow. Another question, I

Re: [Yade-users] [Question #697195]: How to set the PeriodicFlowEngine

2021-05-24 Thread Zhicheng Gao
Question #697195 on Yade changed: https://answers.launchpad.net/yade/+question/697195 Zhicheng Gao posted a new comment: Dear Bruno, Thank you for your response. In my mind, the flow problem is a boundary value problem, so the PeriodicFlowEngine should get the position and value of the boundary

Re: [Yade-users] [Question #697260]: are the vertices of the cell the center of the sphere

2021-06-01 Thread Zhicheng Gao
Question #697260 on Yade changed: https://answers.launchpad.net/yade/+question/697260 Status: Answered => Open Zhicheng Gao is still having a problem: On the basis of Chareyre's answer, I would like to know how to determine which three bodies are on the shared facet for such two ce

Re: [Yade-users] [Question #697336]: How to close the function doneHook in PeriTriaxController

2021-06-01 Thread Zhicheng Gao
Question #697336 on Yade changed: https://answers.launchpad.net/yade/+question/697336 Zhicheng Gao gave more information on the question: Because, in the next step, I want to erode the sample under the condition of isotropic pressure -- You received this question notification because your team

Re: [Yade-users] [Question #697260]: are the vertices of the cell the center of the sphere

2021-06-01 Thread Zhicheng Gao
Question #697260 on Yade changed: https://answers.launchpad.net/yade/+question/697260 Status: Answered => Open Zhicheng Gao is still having a problem: Dear Robert, If I want to get the constriction size distribution, whether these same cells make an effect? -- You received this quest

Re: [Yade-users] [Question #697336]: How to close the function doneHook in PeriTriaxController

2021-06-01 Thread Zhicheng Gao
Question #697336 on Yade changed: https://answers.launchpad.net/yade/+question/697336 Zhicheng Gao posted a new comment: Dear Robert, According to your suggestion, I have modified the code, but there is an error ArgumentError: Python argument types in None.None(PeriTriaxController

Re: [Yade-users] [Question #697336]: How to close the function doneHook in PeriTriaxController

2021-06-01 Thread Zhicheng Gao
Question #697336 on Yade changed: https://answers.launchpad.net/yade/+question/697336 Status: Answered => Open Zhicheng Gao is still having a problem: Dear Robert, According to your suggestion, I have modified the code, but there is an error ArgumentError: Python argument ty

Re: [Yade-users] [Question #697642]: Many errors with PeriodicFlowEngine

2021-07-07 Thread Zhicheng Gao
Question #697642 on Yade changed: https://answers.launchpad.net/yade/+question/697642 Status: Answered => Open Zhicheng Gao is still having a problem: @Bruno Chareyre Dear Chareyre, Thank you for your quick reply! I tried to modify my code, but it failed. I don't know what's wr

Re: [Yade-users] [Question #697642]: Many errors with PeriodicFlowEngine

2021-06-23 Thread Zhicheng Gao
Question #697642 on Yade changed: https://answers.launchpad.net/yade/+question/697642 Status: Solved => Open Zhicheng Gao is still having a problem: So how to delete the previous FlowEngine? -- You received this question notification because your team yade-users is an answer cont

Re: [Yade-users] [Question #697642]: Many errors with PeriodicFlowEngine

2021-06-23 Thread Zhicheng Gao
Question #697642 on Yade changed: https://answers.launchpad.net/yade/+question/697642 Status: Answered => Solved Zhicheng Gao confirmed that the question is solved: Thanks Bruno Chareyre, that solved my question. -- You received this question notification because your team yade-us

Re: [Yade-users] [Question #697642]: Many errors with PeriodicFlowEngine

2021-07-02 Thread Zhicheng Gao
Question #697642 on Yade changed: https://answers.launchpad.net/yade/+question/697642 Status: Solved => Open Zhicheng Gao is still having a problem: Dear Chareyre, I modified the code in Section B in the way you suggested, but the same error still occurred. Thank you for your attent

Re: [Yade-users] [Question #697642]: Many errors with PeriodicFlowEngine

2021-07-02 Thread Zhicheng Gao
Question #697642 on Yade changed: https://answers.launchpad.net/yade/+question/697642 Status: Needs information => Open Zhicheng Gao gave more information on the question: Dear Chareyre, The index of the older engine is 3, so I confirm the older engine is replaced by O.engines=O.engine

[Yade-users] [Question #697778]: Failed to triangulate body

2021-06-29 Thread Zhicheng Gao
New question #697778 on Yade: https://answers.launchpad.net/yade/+question/697778 Hi, I use the FlowEngine and get some problems. I use the pack module to generate particles, when I set the seed=2 or 3, I get such warning: Failed to triangulate body with id=47 Point=-1976.72 1535.93 -26.6935

[Yade-users] [Question #697779]: CHOLMOD warning and Segmentation fault

2021-06-29 Thread Zhicheng Gao
New question #697779 on Yade: https://answers.launchpad.net/yade/+question/697779 Hi, I use the PeriodicFlowEngine to simulate the erosion, I get such warning: CHOLMOD warning: matrix not positive definite. file: ../Supernodal/t_cholmod_super_numeric.c line: 911 something went wrong in Cholesky

Re: [Yade-users] [Question #697952]: Once the flow engine is used, the particles run out of the wall

2021-07-12 Thread Zhicheng Gao
Question #697952 on Yade changed: https://answers.launchpad.net/yade/+question/697952 Status: Needs information => Open Zhicheng Gao gave more information on the question: Dear Robert Caulk, I just changed the particle size distribution and the size of the box -- You received this quest

Re: [Yade-users] [Question #697952]: Once the flow engine is used, the particles run out of the wall

2021-07-12 Thread Zhicheng Gao
Question #697952 on Yade changed: https://answers.launchpad.net/yade/+question/697952 Zhicheng Gao gave more information on the question: I use the engine "GlobalStiffnessTimeStepper(active=1,timeStepUpdateInterval=100,timestepSafetyCoefficient=0.8)" to calculate the time step aut

[Yade-users] [Question #697952]: Once the flow engine is used, the particles run out of the wall

2021-07-12 Thread Zhicheng Gao
New question #697952 on Yade: https://answers.launchpad.net/yade/+question/697952 There was no problem when I just simulated the triaxial test, but when I activated the FlowEngine, the particles moved out of the wall and the error Failed to triangulate body with id=104 Can someone help

Re: [Yade-users] [Question #697952]: Once the flow engine is used, the particles run out of the wall

2021-07-12 Thread Zhicheng Gao
Question #697952 on Yade changed: https://answers.launchpad.net/yade/+question/697952 Zhicheng Gao gave more information on the question: @Robert Caulk Dear Robert Caulk, Thank you for your kind answer! Can I use the engine "GlobalStiffnessTimeStepper" to automatically calculate

Re: [Yade-users] [Question #697952]: Once the flow engine is used, the particles run out of the wall

2021-07-12 Thread Zhicheng Gao
Question #697952 on Yade changed: https://answers.launchpad.net/yade/+question/697952 Status: Answered => Solved Zhicheng Gao 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 #697779]: CHOLMOD warning and Segmentation fault

2021-06-30 Thread Zhicheng Gao
Question #697779 on Yade changed: https://answers.launchpad.net/yade/+question/697779 Status: Needs information => Open Zhicheng Gao gave more information on the question: I'm very sorry, because no one responded, so I raised this question again -- You received this question notificat

Re: [Yade-users] [Question #697642]: Many errors with PeriodicFlowEngine

2021-07-01 Thread Zhicheng Gao
Question #697642 on Yade changed: https://answers.launchpad.net/yade/+question/697642 Status: Answered => Solved Zhicheng Gao confirmed that the question is solved: Thanks Bruno Chareyre, that solved my question. -- You received this question notification because your team yade-us

Re: [Yade-users] [Question #697139]: How to modify the rolling resistance

2021-05-19 Thread Zhicheng Gao
Question #697139 on Yade changed: https://answers.launchpad.net/yade/+question/697139 Zhicheng Gao posted a new comment: Hello, Luc,whether the following code can modify the rolling resistance for b in O.bodies: b.mat.etaRoll=targetetaRoll AND for i in O.interactions: i.phys.etaRoll

Re: [Yade-users] [Question #697139]: How to modify the rolling resistance

2021-05-19 Thread Zhicheng Gao
Question #697139 on Yade changed: https://answers.launchpad.net/yade/+question/697139 Status: Answered => Solved Zhicheng Gao confirmed that the question is solved: Thank you for your helpful answers and suggestions, -- You received this question notification because your team yade-us

[Yade-users] [Question #698417]: negative volume for an ordinary pore

2021-08-18 Thread Zhicheng Gao
New question #698417 on Yade: https://answers.launchpad.net/yade/+question/698417 I am doing an erosion simulation similar to Antoine Wautier[1]. The particle gradation curve is wide. At the beginning of the simulation, a large number of fine particles are deleted. At some time steps, the

Re: [Yade-users] [Question #698377]: How to correct the strain

2021-08-23 Thread Zhicheng Gao
Question #698377 on Yade changed: https://answers.launchpad.net/yade/+question/698377 Status: Solved => Open Zhicheng Gao is still having a problem: I have tried setting the depth0, width0, and height0 equal to the current size, but it takes ten steps for it to take effect. And af

Re: [Yade-users] [Question #698377]: How to correct the strain

2021-08-24 Thread Zhicheng Gao
Question #698377 on Yade changed: https://answers.launchpad.net/yade/+question/698377 Status: Answered => Solved Zhicheng Gao 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 #698592]: When using a FlowEngine, is the confining pressure of the triaxial test an effective stress?

2021-09-01 Thread Zhicheng Gao
New question #698592 on Yade: https://answers.launchpad.net/yade/+question/698592 In the oedometer.py[1], the confining pressure is set by triax.goal1=triax.goal2=triax.goal3=-1 and FlowEngine is active. In this case, is confining pressure effective stress? Thank you!

[Yade-users] [Question #698377]: How to correct the strain

2021-08-14 Thread Zhicheng Gao
New question #698377 on Yade: https://answers.launchpad.net/yade/+question/698377 I use the TriaxialStressController to simulate the triaxial test. The spheres are initially compressed isotropic by move walls, and then the deviatoric loading begins. I want to calculate the strain starting with

Re: [Yade-users] [Question #698377]: How to correct the strain

2021-08-15 Thread Zhicheng Gao
Question #698377 on Yade changed: https://answers.launchpad.net/yade/+question/698377 Status: Answered => Solved Zhicheng Gao confirmed that the question is solved: Thanks, Robert. I use the triax.strain, I will try setting the depth0, width0, and height0 equal to the current s

Re: [Yade-users] [Question #698605]: The distribution of contact normal direction and contact normal force are not uniform after isotropic consolidation

2021-09-03 Thread Zhicheng Gao
Question #698605 on Yade changed: https://answers.launchpad.net/yade/+question/698605 Status: Needs information => Open Zhicheng Gao gave more information on the question: Dear Jan, Thank you for your reply. >What is your definition of "even distribution" and "uniform&

[Yade-users] [Question #698605]: The distribution of contact normal direction and contact normal force are not uniform after isotropic consolidation

2021-09-02 Thread Zhicheng Gao
New question #698605 on Yade: https://answers.launchpad.net/yade/+question/698605 After isotropic consolidation, I check the contact normal direction and contact normal force distribution which should be evenly distributed in all directions, and I found they are not uniform. I don't know what's

Re: [Yade-users] [Question #698605]: The distribution of contact normal direction and contact normal force are not uniform after isotropic consolidation

2021-09-12 Thread Zhicheng Gao
Question #698605 on Yade changed: https://answers.launchpad.net/yade/+question/698605 Status: Open => Solved Zhicheng Gao confirmed that the question is solved: Dear Jan, I am very grateful for your patient answers, and I am very sorry for not responding to you in time. I have taken s

Re: [Yade-users] [Question #698605]: The distribution of contact normal direction and contact normal force are not uniform after isotropic consolidation

2021-09-05 Thread Zhicheng Gao
Question #698605 on Yade changed: https://answers.launchpad.net/yade/+question/698605 Status: Answered => Open Zhicheng Gao is still having a problem: >how do you define "almost the same"? The difference is not more than 0.5 times the average value, but it can be seen

Re: [Yade-users] [Question #698247]: The size of the function aabbDim() is not calculated correctly

2021-08-10 Thread Zhicheng Gao
Question #698247 on Yade changed: https://answers.launchpad.net/yade/+question/698247 Status: Needs information => Open Zhicheng Gao gave more information on the question: I think I find the reason why they have a big difference, the time step is too long and there are spheres spilling o

[Yade-users] [Question #698207]: Which IPhysFunctor should I choose

2021-07-31 Thread Zhicheng Gao
New question #698207 on Yade: https://answers.launchpad.net/yade/+question/698207 The materials of walls and spheres are FrictMat and CohFricMat respectively, for the interactions of sphere and walls, I didn't find a suitable IPhysFunctor like Ip2_FrictMat_CohFrictMat_. Which IPhysFunctor

Re: [Yade-users] [Question #698207]: Which IPhysFunctor should I choose

2021-08-01 Thread Zhicheng Gao
Question #698207 on Yade changed: https://answers.launchpad.net/yade/+question/698207 Status: Answered => Solved Zhicheng Gao 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 #698247]: The size of the function aabbDim() is not calculated correctly

2021-08-05 Thread Zhicheng Gao
New question #698247 on Yade: https://answers.launchpad.net/yade/+question/698247 I use the aabbWalls to generate 6 walls enclosing the packing, the ids of walls are 0-5. After isotropic compression, I use aabbDim() to calculate the dimensions of the axis-aligned. I find out that they doesn't

Re: [Yade-users] [Question #698592]: When using a FlowEngine, is the confining pressure of the triaxial test an effective stress?

2021-10-03 Thread Zhicheng Gao
Question #698592 on Yade changed: https://answers.launchpad.net/yade/+question/698592 Status: Answered => Solved Zhicheng Gao confirmed that the question is solved: Thanks Robert Caulk, that solved my question. -- You received this question notification because your team yade-us

[Yade-users] [Question #698944]: Can Yade be installed on red Hat?

2021-10-03 Thread Zhicheng Gao
New question #698944 on Yade: https://answers.launchpad.net/yade/+question/698944 I use a high-performance computer cluster with a Red Hat Enterprise Linux Server operating system installed. Can yade be installed on this system? Thank you! -- You received this question notification because

Re: [Yade-users] [Question #699705]: Empirical value of rolling stiffness (Krot)

2021-12-03 Thread Zhicheng Gao
Question #699705 on Yade changed: https://answers.launchpad.net/yade/+question/699705 Status: Answered => Open Zhicheng Gao is still having a problem: Dear Duriez I want to use Hertz-Mindlin contact law, the sphere is rough with rolling resistance, and the wall is smooth without frict

Re: [Yade-users] [Question #699705]: Empirical value of rolling stiffness (Krot)

2021-12-06 Thread Zhicheng Gao
Question #699705 on Yade changed: https://answers.launchpad.net/yade/+question/699705 Zhicheng Gao posted a new comment: Thanks Duriez and Brzezinski! -- You received this question notification because your team yade-users is an answer contact for Yade

Re: [Yade-users] [Question #699705]: Empirical value of rolling stiffness (Krot)

2021-12-06 Thread Zhicheng Gao
Question #699705 on Yade changed: https://answers.launchpad.net/yade/+question/699705 Zhicheng Gao posted a new comment: Thanks Duriez and Brzezinski! -- You received this question notification because your team yade-users is an answer contact for Yade

[Yade-users] [Question #700030]: When using the Hertz contact model, the consolidation can not be achieved

2021-12-28 Thread Zhicheng Gao
New question #700030 on Yade: https://answers.launchpad.net/yade/+question/700030 When using the Hertz contact model, the consolidation can not be achieved, and the length of each side of the area is quite different, becoming a cuboid. The main code is as follows: num_spheres=3000

Re: [Yade-users] [Question #699362]: The uniaxial compression experiment fails to reach the critical state

2021-11-22 Thread Zhicheng Gao
Question #699362 on Yade changed: https://answers.launchpad.net/yade/+question/699362 Status: Answered => Open Zhicheng Gao is still having a problem: Dear Jan, the code of isotropic compression is as follows: ##__ First section, generate sample_ from __future__ imp

Re: [Yade-users] [Question #699362]: The uniaxial compression experiment fails to reach the critical state

2021-11-22 Thread Zhicheng Gao
Question #699362 on Yade changed: https://answers.launchpad.net/yade/+question/699362 Zhicheng Gao posted a new comment: Dear Jerome, I used Yade on the recommendation of my tutor, and compared with PFC, Yade can perform parallel calculation and the calculation speed should be faster, so I

[Yade-users] [Question #699589]: i.geom.normal is not normalized (unit) vector from the branch vector (for the case of sphere-sphere contact)

2021-11-22 Thread Zhicheng Gao
New question #699589 on Yade: https://answers.launchpad.net/yade/+question/699589 I want to calculate the mechanical anisotropy, the branch vector is needed. However, I find the contact normal obtained by i.geom.normal is not normalized (unit) vector from the branch vector (for the case of

Re: [Yade-users] [Question #699589]: i.geom.normal is not normalized (unit) vector from the branch vector (for the case of sphere-sphere contact)

2021-11-22 Thread Zhicheng Gao
Question #699589 on Yade changed: https://answers.launchpad.net/yade/+question/699589 Status: Answered => Open Zhicheng Gao is still having a problem: Thanks, Jan >you are printing TOTAL force, not normal force. If i.geom.shearForce is >non-zero, then you naturally get non-parall

Re: [Yade-users] [Question #699589]: i.geom.normal is not normalized (unit) vector from the branch vector (for the case of sphere-sphere contact)

2021-11-22 Thread Zhicheng Gao
Question #699589 on Yade changed: https://answers.launchpad.net/yade/+question/699589 Zhicheng Gao posted a new comment: For i = O.interactions[A,B],is i.phys.normalForce the force exerted on grain A by grain B or grain B by grain A? -- You received this question notification because your team

Re: [Yade-users] [Question #699589]: i.geom.normal is not normalized (unit) vector from the branch vector (for the case of sphere-sphere contact)

2021-11-22 Thread Zhicheng Gao
Question #699589 on Yade changed: https://answers.launchpad.net/yade/+question/699589 Status: Answered => Solved Zhicheng Gao confirmed that the question is solved: Jan, thank you very much for your help and quick reply! -- You received this question notification because your team y

Re: [Yade-users] [Question #699362]: The uniaxial compression experiment fails to reach the critical state

2021-11-06 Thread Zhicheng Gao
Question #699362 on Yade changed: https://answers.launchpad.net/yade/+question/699362 Status: Answered => Open Zhicheng Gao is still having a problem: Hi, Jan > Usually, the critical state can be reached at 25% of the axial strain. This conclusion was obtained in many exper

Re: [Yade-users] [Question #699362]: The uniaxial compression experiment fails to reach the critical state

2021-11-06 Thread Zhicheng Gao
Question #699362 on Yade changed: https://answers.launchpad.net/yade/+question/699362 Zhicheng Gao gave more information on the question: Is it because my loading speed is too fast, but at present, it takes two days to calculate 40% axial strain, and the CPU is R7-5800H. Is there a problem

Re: [Yade-users] [Question #699362]: The uniaxial compression experiment fails to reach the critical state

2021-11-06 Thread Zhicheng Gao
Question #699362 on Yade changed: https://answers.launchpad.net/yade/+question/699362 Zhicheng Gao gave more information on the question: Hi, Robert >What is "usually?" Does that mean you are comparing to a common "triaxial" lab test with flexible membrane? Keep in mind t

[Yade-users] [Question #699362]: The uniaxial compression experiment fails to reach the critical state

2021-11-05 Thread Zhicheng Gao
New question #699362 on Yade: https://answers.launchpad.net/yade/+question/699362 After isotropic consolidation, the confining pressure remains unchanged in the X and Y directions, and the axial compression in the Z-axis direction is 40%, which has not yet reached the critical state. Usually,

Re: [Yade-users] [Question #699347]: How to use periodic boundaries for triaxial test simulation after erosion

2021-11-05 Thread Zhicheng Gao
Question #699347 on Yade changed: https://answers.launchpad.net/yade/+question/699347 Status: Needs information => Solved Zhicheng Gao confirmed that the question is solved: > This feature is also what I am researching. In other words, is it best to > delete the wall directly a

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