Hi Liqing, there are actually 2 laws similar to the one you mention. One is directly based on Jean-Patrick Plassiard's paper, Law2_SCG_MomentPhys_CohesionlessMomentRotation written by Chia Weng Boon (see https://www.yade-dem.org/sphinx/yade.wrapper.html#yade.wrapper.Law2_SCG_MomentPhys_CohesionlessMomentRotation). In that case (http://bazaar.launchpad.net/~yade-dev/yade/trunk/annotate/head%3A/pkg/dem/Engine/GlobalEngine/CohesionlessMomentRotation.cpp#L139) the bending moment is limited as you mention.
The one you used is perhaps Law2_ScGeom_CohFrictPhys_ElasticPlastic (https://www.yade-dem.org/sphinx/yade.wrapper.html#yade.wrapper.Law2_ScGeom_CohFrictPhys_ElasticPlastic) written by Janek Kozicki; it is much less clear in documentation, but there is no plasticity in the bending sense, see http://bazaar.launchpad.net/~yade-dev/yade/trunk/annotate/head% 3A/pkg/dem/Engine/GlobalEngine/CohesiveFrictionalContactLaw.cpp#L139 Cheers, c+v > Hello, > > I found the moment calculation in cohesion-friction model is different > from the traditional algorithm which is listed in the > paper(Jean-Patrick Plassiard etl, A spherical discrete element > model:calibration procedure and incremental response, 209; N. Belheine > etl, Numerial simulation of drained triaxial test using 3d discrete > element modeling; Rolling resistance at contacts in simulation of > shear band development by DEM). In the traditional algorithms, the > slider for rolling starts working if the moment exceeds a value of > "eta* Normal force". However, I cannot find the related code described > it. If no any condition to relax the moment. then the moment will act > all the time. I think it should be wrong. Maybe I haven't found the > right file. May I have your help? Thank you. > > Best > Liqing > > > > ______________________________________________________________________ > 全国最低价，天天在家冲照片，24小时发货上门！ > _______________________________________________ > Mailing list: https://launchpad.net/~yade-users > Post to : [email protected] > Unsubscribe : https://launchpad.net/~yade-users > More help : https://help.launchpad.net/ListHelp _______________________________________________ Mailing list: https://launchpad.net/~yade-users Post to : [email protected] Unsubscribe : https://launchpad.net/~yade-users More help : https://help.launchpad.net/ListHelp
