Hi everyone These days I'm a little puzzled with the strain compution in TriaxialstressController.cpp ,just as follows:
strain[0] = Mathr::Log(width0/width);//Eq(1) strain[1] = Mathr::Log(height0/height);//Eq(2) strain[2] = Mathr::Log(depth0/depth);//Eq(3) volumetricStrain=strain[0]+strain[1]+strain[2];//Eq(4) IIRC,Log means not log10 but ln as usual .Is it right? Eq(1 to 3) is different from the common compution of strain like: epsilon=(length-length0)/length0 and, in PFC3D manuals(V3.0)->users' guide->problem solving with pfc3d Page 47, I found another Eq for strain compution: epsilon=(L-L0)/((L0+L)/2) Are the 3 methods all right? They're designed for different fields? Thanks for any suggestion. Regards. Zhang Lin [EMAIL PROTECTED] 2008-11-25
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