Hi, Sorry, I don't really get the point... I will try to answer since I think you get confused with Cpm which is different to CFpm:
Contrary to Cpm, CohesiveFrictionalPM needs to be used with ScGeom as precised in the functor name(Law2_ScGeom_CFpmPhys_CohesiveFrictionalPM). In this manner, you can therefore use CohesiveFrictionalPM with ThreeDTriaxialEngine as long as you define boxes as boundaries (actually, I am using it right now :-) ). Just use: Ig2_Sphere_Sphere_ScGeom and Ig2_Box_Sphere_ScGeom in your simulation, it should work. Hope it helps. Luc 2010/9/17 焦利青 <[email protected]> > Hello, > > Thanks for your warm help. I have tried this model. However, the new > problem is coming. You know, the CFphPhys just can be matched to > Dem3DofGeom. There are no the Ig2_Box_Sphere_Dem3DofGeom. If I must choose > the Ig2_Facet_Sphere_Dem3DofGeom instead of Ig2_Box_Sphere_Dem3DofGeom. then > the ThreeDTriaxialEngine can not approve the Facet as the boundary. If I > want to change Facet instead of the box in ThreeDTriaxialEngine, I cannot > give the only one Facet id to impose the strain on it. You know, The > rectangle should be composed of two facet. > So, how can I deal with it? Thank you! > > Best > Liqing > > > At 2010-09-17 10:49:31，"luc scholtes" <[email protected]> wrote: > > Try to have a look at CohesiveFrictionalPM with CFpmPhys and CFpmMat which > allow cohesion, tensile strength and moment at contact. > > Cheers > > Luc > > 2010/9/17 焦利青 <[email protected]> > >> Hello, >> >> Yes, you are all right. I mentioned the cohesion-friction model is >> Law2_ScGeom_CohFrictPys_ElasticPlastic. I am sorry, I should point out >> clearly. As your means, If I would like to consider the effect of moment, >> this one is not suitable, isn't it? I know the code of moment algorithm has >> been realized in the Cohesionless one. But, the effect of cohesion must be >> considered in my model. In the conclusion, if both the moment and cohesion >> should be considered, how can I do it? May I have your help? thank you. >> >> Sincerely >> Liqing >> >> >> At 2010-09-16 19:32:15，"Jerome Duriez" <[email protected]> wrote: >> >> >Hello, >> > >> >You can find this plastic threshold for the moment in >> >Law2_ScGeom_NormalInelasticityPhys_NormalInelasticity (lines 193 to 202 >> >of the .cpp). For what concerns the "cohesion-friction model", I assume >> >that you speak of Law2_ScGeom_CohFrictPhys_ElasticPlastic, which I know >> >less. But a quick look to the .cpp gives me the same feeling than yours, >> >that the moment is always elastic. >> > >> >Jerome >> > >> >Le 16/09/2010 12:40, 焦利青 a écrit : >> >> 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！ <http://yxp.163.com/photo/ep.html?sss=fromyx0911> >> _______________________________________________ >> Mailing list: >> https://launchpad.net/~yade-users<https://launchpad.net/%7Eyade-users> >> Post to : [email protected] >> Unsubscribe : >> https://launchpad.net/~yade-users<https://launchpad.net/%7Eyade-users> >> More help : https://help.launchpad.net/ListHelp >> >> > > > ------------------------------ > 全国最低价，天天在家冲照片，24小时发货上门！ <http://yxp.163.com/photo/ep.html?sss=fromyx0911> > _______________________________________________ > Mailing list: > https://launchpad.net/~yade-users<https://launchpad.net/%7Eyade-users> > Post to : [email protected] > Unsubscribe : > https://launchpad.net/~yade-users<https://launchpad.net/%7Eyade-users> > More help : https://help.launchpad.net/ListHelp > >
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