185 lines
4 KiB
C
185 lines
4 KiB
C
Info<< "Reading incremental displacement field DU\n" << endl;
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volVectorField DU
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(
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IOobject
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(
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"DU",
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runTime.timeName(),
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mesh,
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IOobject::MUST_READ,
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IOobject::AUTO_WRITE
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),
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mesh
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);
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volTensorField gradDU = fvc::grad(DU);
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Info<< "Reading accumulated displacement field U\n" << endl;
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volVectorField U
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(
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IOobject
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(
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"U",
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runTime.timeName(),
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mesh,
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IOobject::READ_IF_PRESENT,
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IOobject::AUTO_WRITE
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),
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mesh,
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dimensionedVector("zero", dimLength, vector::zero)
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);
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Info << "Reading accumulated strain field epsilon\n" << endl;
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volSymmTensorField epsilon
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(
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IOobject
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(
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"epsilon",
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runTime.timeName(),
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mesh,
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IOobject::READ_IF_PRESENT,
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IOobject::AUTO_WRITE
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),
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mesh,
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dimensionedSymmTensor("zero", dimless, symmTensor::zero)
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);
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// total plastic strain
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volSymmTensorField epsilonP
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(
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IOobject
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(
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"epsilonP",
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runTime.timeName(),
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mesh,
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IOobject::READ_IF_PRESENT,
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IOobject::AUTO_WRITE
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),
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mesh,
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dimensionedSymmTensor("zero", dimless, symmTensor::zero)
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);
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volSymmTensorField DEpsilon
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(
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IOobject
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(
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"DEpsilon",
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runTime.timeName(),
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mesh,
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IOobject::READ_IF_PRESENT,
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IOobject::AUTO_WRITE
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),
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mesh,
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dimensionedSymmTensor("zero", dimless, symmTensor::zero)
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);
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Info << "Reading accumulated stress field sigma\n" << endl;
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volSymmTensorField sigma
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(
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IOobject
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(
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"sigma",
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runTime.timeName(),
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mesh,
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IOobject::READ_IF_PRESENT,
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IOobject::AUTO_WRITE
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),
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mesh,
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dimensionedSymmTensor("zero", dimForce/dimArea, symmTensor::zero)
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);
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Info << "Reading incremental stress field DSigma\n" << endl;
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volSymmTensorField DSigma
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(
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IOobject
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(
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"DSigma",
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runTime.timeName(),
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mesh,
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IOobject::READ_IF_PRESENT,
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IOobject::AUTO_WRITE
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),
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mesh,
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dimensionedSymmTensor("zero", dimForce/dimArea, symmTensor::zero)
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);
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//- explicit terms in the momentum equation
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volVectorField divDSigmaExp
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(
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IOobject
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(
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"divDSigmaExp",
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runTime.timeName(),
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mesh,
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IOobject::NO_READ,
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IOobject::NO_WRITE
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),
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mesh,
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dimensionedVector("zero", dimensionSet(1, -2, -2, 0, 0, 0, 0), vector::zero)
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);
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volVectorField divDSigmaNonLinExp
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(
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IOobject
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(
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"divDSigmaNonLinExp",
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runTime.timeName(),
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mesh,
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IOobject::NO_READ,
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IOobject::NO_WRITE
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),
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mesh,
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dimensionedVector("zero", dimensionSet(1,-2,-2,0,0,0,0), vector::zero)
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);
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constitutiveModel rheology(sigma, DU);
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volScalarField rho = rheology.rho();
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volScalarField mu = rheology.mu();
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volScalarField lambda = rheology.lambda();
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surfaceScalarField muf = fvc::interpolate(rheology.mu());
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surfaceScalarField lambdaf = fvc::interpolate(rheology.lambda());
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surfaceVectorField n = mesh.Sf()/mesh.magSf();
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// plastic strain increment
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const volSymmTensorField& DEpsilonP = rheology.DEpsilonP();
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// for aitken relaxation
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volVectorField aitkenDelta
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(
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IOobject
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(
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"aitkenDelta",
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runTime.timeName(),
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mesh,
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IOobject::NO_READ,
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IOobject::NO_WRITE
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),
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mesh,
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dimensionedVector("zero", dimLength, vector::zero)
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);
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// aitken relaxation factor
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scalar aitkenInitialRes = 1.0;
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scalar aitkenTheta = 0.1;
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if(mesh.relax(DU.name()))
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{
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aitkenTheta = mesh.relaxationFactor(DU.name());
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}
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volVectorField resid
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(
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IOobject
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(
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"resid",
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runTime.timeName(),
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mesh,
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IOobject::NO_READ,
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IOobject::AUTO_WRITE
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),
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mesh,
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dimensionedVector("zero", dimless, vector::zero)
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);
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