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[Question #245254]: Update interaction and material parameters during the simlulation process

To: yade-users@xxxxxxxxxxxxxxxxxxx
From: Henry <question245254@xxxxxxxxxxxxxxxxxxxxx>
Date: Mon, 10 Mar 2014 14:26:23 -0000
Reply-to: question245254@xxxxxxxxxxxxxxxxxxxxx
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New question #245254 on Yade:
https://answers.launchpad.net/yade/+question/245254

Hi all, 
   I want to change the interaciton and material parameters during the simulation process through the following functions. However, the analysis results before and after the changes of the parameters.

Here is the function:


O.materials.append(CohFrictMat(young=1e8,poisson=0.2,density=den,frictionAngle=20,normalCohesion=1e3,shearCohesion=1e3,isCohesive=True,momentRotationLaw=True,etaRoll=0.1))


def Par_Change():
        Fos=2.0
        Fri_Fos=math.atan(math.tan(Frict_0)/Fos)
         # here we modify the material and interaction physics
        for b in O.bodies:
                b.mat.frictionAngle=Fri_Fos
                b.mat.normalCohesion=Coh_0/Fos
                b.mat.shearCohesion=Coh_0/Fos    
        for i in O.interactions:
                i.phys.normalCohesion=Coh_0/Fos
                i.phys.shearCohesion=Coh_0/Fos
                i.phys.frictionAngle=Fri_Fos

Anyone can help me？ Thanks a lot.
Henry

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