Question #178830 on Yade changed: https://answers.launchpad.net/yade/+question/178830
Chiara Modenese proposed the following answer: On 17 November 2011 13:45, Chareyre <[email protected]>wrote: > Question #178830 on Yade changed: > https://answers.launchpad.net/yade/+question/178830 > > Chareyre posted a new comment: > "O.interactions.clear()": > It will most probably break everything. As soon as collider stride is > used, interactions are not created at each step, then particles will > penetrate each other for a random number of steps without interacting. To > overcome that you could disable stride. Overall, stride=off and > deleting/creating all interactions at each step could well multiply cpu > time by 10. > > In addition, the history of the contact is lost, i.e. the tangential > force is lost, resulting in instabilities and artificial creep. > Yes, sorry for wrong suggestion. Killing the interactions is not the solution (although this would not generate any trouble on the collider side as Vaclav said). Chiara > > Concerning the initial problem of wangxiaolang: Yes, increasing sizes is > changing psd homotheticaly. If you want to impose not only the > dispersion around mean size but also mean size itself, then you have to > generate particles smaller than the target size. If you have target > porosity and target final size, it is not difficult to derive how > smaller they should be initially. I guess you had to solve this problem > somehow in your script, since you are also increasing sizes after all? > > Another (simpler but not perfect) option is to generate a packing of > arbitrary mean size, then take all positions and sizes and scale them > appropriately before using them as an initial geometry. > > -- > You received this question notification because you are a member of > yade-users, which is an answer contact for Yade. > > _______________________________________________ > Mailing list: https://launchpad.net/~yade-users > Post to : [email protected] > Unsubscribe : https://launchpad.net/~yade-users > More help : https://help.launchpad.net/ListHelp > -- You received this question notification because you are a member of yade-users, which is an answer contact for Yade. _______________________________________________ Mailing list: https://launchpad.net/~yade-users Post to : [email protected] Unsubscribe : https://launchpad.net/~yade-users More help : https://help.launchpad.net/ListHelp
