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About converting Young's modulus and Poisson's ratio to Kn and Ks
Today I went into the file "MacroMicroElasticRelationships.cpp", where I am
looking for the equation to convert E and v into normal and tangential
stiffness, I saw these lines:
Real Dinit = Da+Db; // FIXME - is it just a sum?
Real Sinit = Mathr::PI * std::pow( std::min(Da,Db) , 2);
Real Kn = (Eab*Sinit/Dinit)*( (1+alpha)/(beta*(1+Vab) + gamma*(1-alpha*Vab) )
); //cerr << "Kn: " << Kn << endl;
My question is that where does these two equations come from? Can any body
give the reference?
Thanks a lot!
With best regards,
Department of Civil and Environmental Engineering
University of Tennessee, Knoxville
(865) 974-4835 (Office)
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