Re: [Yade-users] [Question #291538]: triaxial test:Law2_ScGeom_FrictPhys_CundallStrack
Question #291538 on Yade changed: https://answers.launchpad.net/yade/+question/291538 hjz posted a new comment: Bruno, I'm very sorry. I will be careful next time. hjz -- You received this question notification because your team yade-users is an answer contact for Yade. ___ Mailing list: https://launchpad.net/~yade-users Post to : yade-users@lists.launchpad.net Unsubscribe : https://launchpad.net/~yade-users More help : https://help.launchpad.net/ListHelp
Re: [Yade-users] [Question #291725]: Yade undefined symbol
Question #291725 on Yade changed: https://answers.launchpad.net/yade/+question/291725 Status: Open => Answered Anton Gladky proposed the following answer: Hi, that is strange error. Please try to compile Yade without CGAL and check, whether it works. You need to pass -DENABLE_CGAL=0 into the cmake option. Also it is a very bad idea to edit makefiles, generated by cmake. Please use options in cmake configuration line. Regards Anton -- You received this question notification because your team yade-users is an answer contact for Yade. ___ Mailing list: https://launchpad.net/~yade-users Post to : yade-users@lists.launchpad.net Unsubscribe : https://launchpad.net/~yade-users More help : https://help.launchpad.net/ListHelp
Re: [Yade-users] [Question #291538]: triaxial test:Law2_ScGeom_FrictPhys_CundallStrack
Question #291538 on Yade changed: https://answers.launchpad.net/yade/+question/291538 Bruno Chareyre posted a new comment: Please don't ask the same question multiple times (actually there is not even a question in this one ;) ). If you don't receive answers you may check (especially point 3): https://yade-dem.org/wiki/Howtoask Bruno -- You received this question notification because your team yade-users is an answer contact for Yade. ___ Mailing list: https://launchpad.net/~yade-users Post to : yade-users@lists.launchpad.net Unsubscribe : https://launchpad.net/~yade-users More help : https://help.launchpad.net/ListHelp
Re: [Yade-users] [Question #291326]: Packing and predicate dimension
Question #291326 on Yade changed: https://answers.launchpad.net/yade/+question/291326 Status: Answered => Open Luis Barbosa is still having a problem: Hi Jan, I didn't know if I got the idea, but my volume of spheres is near 39%, and again, is not dense. Could you share what you have done? Here is what I'm using to calc volume of sphere,creating Gts and dense pack, respectively: utils.getSpheresVolume() pred=pack.inGtsSurface(surf,noPad=True) pack.randomDensePack(pred,spheresInCell=500,radius=0.08,rRelFuzz=0.01, material = 'sphereo',useOBB=False,returnSpherePack=True) Thanks Luis -- You received this question notification because your team yade-users is an answer contact for Yade. ___ Mailing list: https://launchpad.net/~yade-users Post to : yade-users@lists.launchpad.net Unsubscribe : https://launchpad.net/~yade-users More help : https://help.launchpad.net/ListHelp
[Yade-users] [Question #291781]: [Triaxial test]:unbalanced force & axial stress
New question #291781 on Yade: https://answers.launchpad.net/yade/+question/291781 Dear all, Thank you for noticing my question. I'm a new Yade user and I'm trying a triaxial test with it. But I encounter some problems in the testing process. When I test the particles which young modulus are MPa, the result of the test is regular. But when I change the young modulus to GPa, there are some troubles. I conduct the test using triaxial tutorial script-session1.py and modify it a little: 1) After generating the particles, I add 10KPa to the three directions to make the particles touch. 2)When the particles have touched each other, they are compacted by decreasing the friction angle gradually with 10KPa confining pressure. After this procedure, a sample with specific porosity is got. 3) Adding the required confining pressure 0.8MPa till the unbalanced force<0.01. 4) Loading the deviatoric stress by controlling the axial strain, its rate is -0.02. When I change the particles' young modulus to GPa, there are some problems: 1)When the confining pressure 10KPa is added, the particles in the packing decrease. Maybe the packing has exploded? 2) I increase the stress from 0.5KPa to 10KPa gradually, decrease the time step as: timestepSafetyCoefficient=0.1(before, it is 0.8) triax.goal1=triax.goal2=triax.goal3=-500 while 1: O.run(3000, True) unb=unbalancedForce() print 'unbalanced force:',unb,' mean stress: ',triax.meanStress if unbhttps://launchpad.net/~yade-users Post to : yade-users@lists.launchpad.net Unsubscribe : https://launchpad.net/~yade-users More help : https://help.launchpad.net/ListHelp
Re: [Yade-users] [Question #291538]: triaxial test:Law2_ScGeom_FrictPhys_CundallStrack
Question #291538 on Yade changed: https://answers.launchpad.net/yade/+question/291538 Status: Open => Answered Jérôme Duriez proposed the following answer: Hi Your problem is quite complex in the sense there is a lot of operations behind what you're doing, and behind the symptoms you're experiencing.. As for the case of particles crossing the wall, several possible reasons could exist: - the interaction between particles and walls is incorrectly defined (does not exist), check for instance the InteractionLoop() - the walls are too thin with respect to the particles' velocity and timestep, such that the particles cross the wall in one time step without having time to "see" the wall (unlikely ?) - your simulation has diverged because of a too great time step with respect to the mechanical properties, "young" parameter specifically. This is the most probable reason from your description, the solution would be to use GlobalStiffnessTimeStepper [*] (if not present in the Engines ?). It is very efficient to compute an adequate time step. [*] https://yade- dem.org/doc/yade.wrapper.html#yade.wrapper.GlobalStiffnessTimeStepper -- You received this question notification because your team yade-users is an answer contact for Yade. ___ Mailing list: https://launchpad.net/~yade-users Post to : yade-users@lists.launchpad.net Unsubscribe : https://launchpad.net/~yade-users More help : https://help.launchpad.net/ListHelp
Re: [Yade-users] [Question #291326]: Packing and predicate dimension
Question #291326 on Yade changed: https://answers.launchpad.net/yade/+question/291326 Status: Open => Answered Jan Stránský proposed the following answer: Hi Luis, you can also improve the result with setting noPad=True to pack.inGtsSurface. Computing the volume fraction of spheres, I got 57%. randomDensePack in periodic (optimal) conditions has usually around 62% of volume fraction (with monodisperse packing), so the packing is OK. Could you try it and (dis)confirm that it works or not? Thanks Jan 2016-04-21 14:47 GMT+02:00 Luis Barbosa < question291...@answers.launchpad.net>: > Question #291326 on Yade changed: > https://answers.launchpad.net/yade/+question/291326 > > Status: Answered => Open > > Luis Barbosa is still having a problem: > Hi Jan, > > https://drive.google.com/open?id=0B9LhrwAf_vasN1RvNW9Qa3liZUE > > As you can see the spheres are not overlaping, in some case not even > touch. > > Thanks, > Luis > > -- > You received this question notification because your team yade-users is > an answer contact for Yade. > > ___ > Mailing list: https://launchpad.net/~yade-users > Post to : yade-users@lists.launchpad.net > Unsubscribe : https://launchpad.net/~yade-users > More help : https://help.launchpad.net/ListHelp > -- You received this question notification because your team yade-users is an answer contact for Yade. ___ Mailing list: https://launchpad.net/~yade-users Post to : yade-users@lists.launchpad.net Unsubscribe : https://launchpad.net/~yade-users More help : https://help.launchpad.net/ListHelp
Re: [Yade-users] [Question #291194]: Creating a Pack of packages
Question #291194 on Yade changed: https://answers.launchpad.net/yade/+question/291194 Status: Answered => Solved Luis Barbosa confirmed that the question is solved: Ok Jérôme, Let me study more and perform some attempts. Thanks for now. Luis -- You received this question notification because your team yade-users is an answer contact for Yade. ___ Mailing list: https://launchpad.net/~yade-users Post to : yade-users@lists.launchpad.net Unsubscribe : https://launchpad.net/~yade-users More help : https://help.launchpad.net/ListHelp
Re: [Yade-users] [Question #291326]: Packing and predicate dimension
Question #291326 on Yade changed: https://answers.launchpad.net/yade/+question/291326 Status: Answered => Open Luis Barbosa is still having a problem: Hi Jan, https://drive.google.com/open?id=0B9LhrwAf_vasN1RvNW9Qa3liZUE As you can see the spheres are not overlaping, in some case not even touch. Thanks, Luis -- You received this question notification because your team yade-users is an answer contact for Yade. ___ Mailing list: https://launchpad.net/~yade-users Post to : yade-users@lists.launchpad.net Unsubscribe : https://launchpad.net/~yade-users More help : https://help.launchpad.net/ListHelp
Re: [Yade-users] [Question #291326]: Packing and predicate dimension
Question #291326 on Yade changed: https://answers.launchpad.net/yade/+question/291326 Status: Open => Answered Jan Stránský proposed the following answer: Hi Luis, > "No suitable packing in database found, running PERIODIC compression" > > this is just information for the user, it is OK. > And the pack is not dense, but is similar to a "cloud". > this is strange. Could you please post a final picture? In my case it worked as expected. cheers Jan -- You received this question notification because your team yade-users is an answer contact for Yade. ___ Mailing list: https://launchpad.net/~yade-users Post to : yade-users@lists.launchpad.net Unsubscribe : https://launchpad.net/~yade-users More help : https://help.launchpad.net/ListHelp
Re: [Yade-users] [Question #291326]: Packing and predicate dimension
Question #291326 on Yade changed: https://answers.launchpad.net/yade/+question/291326 Status: Answered => Open Luis Barbosa is still having a problem: Hi, Inserting spheresInCell I got this message: "No suitable packing in database found, running PERIODIC compression" And the pack is not dense, but is similar to a "cloud". Thanks, Luis -- You received this question notification because your team yade-users is an answer contact for Yade. ___ Mailing list: https://launchpad.net/~yade-users Post to : yade-users@lists.launchpad.net Unsubscribe : https://launchpad.net/~yade-users More help : https://help.launchpad.net/ListHelp
Re: [Yade-users] [Question #289663]: Total elastic shear energy in Hertz-Mindlin model
Question #289663 on Yade changed: https://answers.launchpad.net/yade/+question/289663 Status: Open => Expired Launchpad Janitor expired the question: This question was expired because it remained in the 'Open' state without activity for the last 15 days. -- You received this question notification because your team yade-users is an answer contact for Yade. ___ Mailing list: https://launchpad.net/~yade-users Post to : yade-users@lists.launchpad.net Unsubscribe : https://launchpad.net/~yade-users More help : https://help.launchpad.net/ListHelp
