Question #632092 on Yade changed: https://answers.launchpad.net/yade/+question/632092
loiseaurare posted a new comment: Hi Bruno and Janek, Thanks for your answers, somehow I had come to the same conclusion. Now, what happens is exactly as you describe it, there is bond breakage when the strength limit is reached, and at the next step, contact is reset, but in a frictional way, with effectively unp set back to zero. That causes instability in a lot of my simulations using the feature fragile = True, because when Fragile = false the interaction Force stays on the strenght limit until the particles are set apart. Now, since this is microscale behavior, maybe I could achieve in doing what I want using microscale platic behavior, and calibrating it that way. However, I still feel it is physically more correct to describe rock behavior as fragile at the micro level ... To give you more information, I have been testing the sensitivity of this overlapping problem, I was thinking that maybe a very small initial overlap would prevent the "jump" in forces to be too strong, or maybe setting a high value of cohesion would allow the particles to break away before strenght limit could be reached. But I have found that even a very small value of overlap with a high value of cohesion definitively messes the data, and actually usually make the sample explode. Now, this feature, of keeping fn = 0 until the particles are set apart is what is implemented in jcfPM I think, so that was probably the choice made by Luc Scholtes. I don't understand it when you say that some volume will be created overall, can you maybe be a little more specific ? -- 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
