45 lines
1.3 KiB
C++
45 lines
1.3 KiB
C++
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Info<< "Reading mechanical properties\n" << endl;
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IOdictionary mechanicalProperties
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(
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IOobject
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(
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"mechanicalProperties",
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runTime.constant(),
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mesh,
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IOobject::MUST_READ,
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IOobject::NO_WRITE
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)
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);
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dimensionedScalar rho(mechanicalProperties.lookup("rho"));
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dimensionedScalar rhoE(mechanicalProperties.lookup("E"));
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dimensionedScalar nu(mechanicalProperties.lookup("nu"));
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Info<< "Normalising E : E/rho\n" << endl;
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dimensionedScalar E = rhoE/rho;
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Info<< "Calculating Lame's coefficients\n" << endl;
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dimensionedScalar mu = E/(2.0*(1.0 + nu));
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dimensionedScalar lambda = nu*E/((1.0 + nu)*(1.0 - 2.0*nu));
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dimensionedScalar threeK = E/(1.0 - 2.0*nu);
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Switch planeStress(mechanicalProperties.lookup("planeStress"));
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if (planeStress)
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{
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Info<< "Plane Stress\n" << endl;
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//- change lambda and threeK for plane stress
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lambda = nu*E/((1.0 + nu)*(1.0 - nu));
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threeK = E/(1.0 - nu);
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}
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else
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{
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Info<< "Plane Strain\n" << endl;
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}
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Info<< "mu = " << mu.value() << " Pa/rho\n";
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Info<< "lambda = " << lambda.value() << " Pa/rho\n";
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Info<< "threeK = " << threeK.value() << " Pa/rho\n";
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