------------------------------------------------------------ revno: 2886 committer: Bruno Chareyre <[email protected]> branch nick: trunk timestamp: Mon 2011-07-18 10:53:56 +0200 message: Small fix in shear stiffness averaging (thanks Emanuele) modified: pkg/dem/Ip2_FrictMat_FrictMat_FrictPhys.cpp
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=== modified file 'pkg/dem/Ip2_FrictMat_FrictMat_FrictPhys.cpp' --- pkg/dem/Ip2_FrictMat_FrictMat_FrictPhys.cpp 2010-12-31 14:35:21 +0000 +++ pkg/dem/Ip2_FrictMat_FrictMat_FrictPhys.cpp 2011-07-18 08:53:56 +0000 @@ -40,7 +40,7 @@ //harmonic average of the two stiffnesses when (Ri.Ei/2) is the stiffness of a contact point on sphere "i" Real Kn = 2*Ea*Ra*Eb*Rb/(Ea*Ra+Eb*Rb); //same for shear stiffness - Real Ks = 2*Ea*Ra*Va*Eb*Rb*Vb/(Ea*Ra*Va+Eb*Rb*Va); + Real Ks = 2*Ea*Ra*Va*Eb*Rb*Vb/(Ea*Ra*Va+Eb*Rb*Vb); Real frictionAngle = (!frictAngle) ? std::min(mat1->frictionAngle,mat2->frictionAngle) : (*frictAngle)(mat1->id,mat2->id,mat1->frictionAngle,mat2->frictionAngle); contactPhysics->tangensOfFrictionAngle = std::tan(frictionAngle);
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