[Yade-users] [Question #697593]: How to apply normal load and friction
New question #697593 on Yade: https://answers.launchpad.net/yade/+question/697593 I have crated a moving plate with a sphere on it with this code sp=sphere((0,0,0),1) plate=box((0,0,-1.5),(10,15,.5)) O.bodies.append(sp) O.bodies.append(plate) plate.state.vel=(0,.0005,0) Now I want to apply some load on the sphere and friction in their interface. As a result I want to create a graph of friction force with displacement. Please help me with this! -- 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 #697548]: Simulating the time-dependent behavior of single grain
Question #697548 on Yade changed: https://answers.launchpad.net/yade/+question/697548 Status: Needs information => Open Du Zhang gave more information on the question: Hi Jan Stránský, thank you very much for your reply and suggestions! I would like to add more information. The single sand grain will be simulated as an agglomerate ( a group of sub-particles bonded together ). This agglomerate will be loaded between two steel plates with a small constant load for days or months. Time- dependent fracturing/deformation/force at contacts can be simulated. Is there the Parallel-Bonded Stress Corrosion (PSC) model or any other similar model in Yade? PSC model was proposed by Potyondy (2007) as an extension of BPM to include the time-dependent behavior of rocks (the time-dependent development of microcracks) by adding a damage-rate law to the parallel-bond formulation. If a parallel bond is under tensile stress higher than the activation stress, the bonding material will be removed at a specified rate governed by a damage-rate. I found a class yade.wrapper.CpmMat. It has "damLaw" for damage evolution in uniaxial tension. I do not know if it is can reach my object. Could you give me some advices? Thanks a lot again. best, Du Zhang -- 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 #697526]: CHOLMOD warning: matrix not positive definite
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-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 #697526]: CHOLMOD warning: matrix not positive definite
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 partial fluid-solid coupling to describe suffusion effects in soils "[1]. In this paper, the periodic boundary condition is chosen and it says "In order to avoid any boundary effect we use periodic boundary conditions as if the same grain arrangement and the same flow field were replicated periodically in space", so I constructed scene in periodic boundary conditions and used the PeriodicFlowEngine to simulate flow. Is that right? I want to make the fluid flow from top to bottom under a certain pressure gradient, and no fluid flows out from the side. So I set flow.bndCondIsPressure=[0,0,1,1,0,0], flow.bndCondValue=[0,0,1,0,0,0]. If my approach is wrong, then how should I set up to achieve what I want? And how to switch solver to LDlt? -- 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 #697260]: are the vertices of the cell the center of the sphere
Question #697260 on Yade changed: https://answers.launchpad.net/yade/+question/697260 Status: Expired => Solved Robert Caulk changed the question status: Changing status to "solved" to avoid launchpad janitor. -- 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 #697578]: Import VTK
Question #697578 on Yade changed: https://answers.launchpad.net/yade/+question/697578 Description changed to: Hi, I simulated the compaction process of spheres, and have saved them in VTK files along with files with info on interparticle forces. I want do simulation on the compact (such liquid flow in pore structure, swelling of the particles), I don't want do compaction simulation each time before I do the liquid flow simulation. Is there a method to import the VTK file of the compact into YADE, such I can do the liquid flow simulation on the compacts. Best, Mithu -- 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 #697260]: are the vertices of the cell the center of the sphere
Question #697260 on Yade changed: https://answers.launchpad.net/yade/+question/697260 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
Re: [Yade-users] [Question #697336]: How to close the function doneHook in PeriTriaxController
Question #697336 on Yade changed: https://answers.launchpad.net/yade/+question/697336 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
