[Yade-users] [Question #694664]: Tiny particles don't react with the wall
New question #694664 on Yade: https://answers.launchpad.net/yade/+question/694664 Hi, I have a sand model with extral tiny particles among the pore space of the sample, and I use this model for triaxial compression test. The boundary condition is simulated by six rigid walls (use walls=aabbWalls([mn,mx],thickness=0,material='FrictMat')). And I use GlobalStiffnessTimeStepper(active=1,timeStepUpdateInterval=100,timestepSafetyCoefficient=0.8) for setting the dt. However, I found that at the end of the simulation (where axial strain = 40%), many tiny particles stay at their original places, which means that these tiny particles didn't react with the boundary wall during the simulation, the example figure could be find at [1]. I guessed it is that there was no contact detection between these tiny particles and the top wall so that these particles passed through the top wall. Then I set the timestepSafetyCoefficient from 0.8 to 0.1 to decrease the dt (not sure if it is correct), but I gained the same result as [1] shows. My questions are: (1) The higher the timestepSafetyCoefficient, the more safe the dt is? Or the lower the timestepSafetyCoefficient, the more safe the dt is? (2) Is there any other way to let the missed contacts being detected correctly during the simulation? Thanks very much! Leonard [1]https://we.tl/t-SRQDF5JLh8 -- 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 #694217]: Normal stiffness of contact under tension
Question #694217 on Yade changed: https://answers.launchpad.net/yade/+question/694217 Aaron Liu posted a new comment: Hi Bruno, I think u are right. But I would like to have a model that two hard particles are in contact with each other and another soft bonding material spread in the interspace. for example, you have a box of glass beads compacted well and then inject glue into gaps until it fulfills all the space. So in this case, when two particles are in compression, the stiffness is mostly dependent on the stiffness of the particle itself. cause they are in contact and soft bonding material could be ignored. But when you pull them away from each other, the bonding material should play the key role of stiffness. Best, Aaron -- 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 #694409]: averagePressure() in PeriodicFlowEngine returns 'nan'
Question #694409 on Yade changed: https://answers.launchpad.net/yade/+question/694409 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 #692945]: How many threads should be selected to achieve the best speed?
Question #692945 on Yade changed: https://answers.launchpad.net/yade/+question/692945 fse ase posted a new comment: Because the ordinary pressure is determined by the intersecting polyhedron between two contact objects, you could classify the type of touch in step here https://bestdehumidifier2021.com/ with the overall form and local form (which include angularity) of that intersecting polyhedron. -- 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
