80 lines
2.1 KiB
C++
80 lines
2.1 KiB
C++
{
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scalar t = runTime.value();
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scalar tNext = t + runTime.deltaT().value();
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instantList Times = runTime.times();
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sigma = dimensionedSymmTensor("zero", dimForce/dimArea, symmTensor::zero);
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DSigmaCorr =
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dimensionedSymmTensor
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(
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"zero",
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dimForce/dimArea,
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symmTensor::zero
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);
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for (label i=1; i<Times.size(); i++)
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{
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runTime.setTime(Times[i], i);
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if(runTime.timeIndex() != i)
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{
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FatalErrorIn(args.executable())
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<< "The strain increment DEpsilon must be stored for "
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<< "each calculated time step. "
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<< exit(FatalError);
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}
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IOobject DEpsilonHeader
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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::MUST_READ
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);
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// Check DEpsilon exists
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if (DEpsilonHeader.headerOk())
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{
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volSymmTensorField DEpsilonOld(DEpsilonHeader, mesh);
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scalar tau = runTime.value() - m*runTime.deltaT().value();
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if(tau < 0)
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{
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sigma += 2.0*rheology.mu(t)*DEpsilonOld
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+ rheology.lambda(t)*(I*tr(DEpsilonOld));
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DSigmaCorr += 2.0*rheology.mu(tNext)*DEpsilonOld
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+ rheology.lambda(tNext)*(I*tr(DEpsilonOld));
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}
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else
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{
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sigma += 2.0*rheology.mu(t - tau)*DEpsilonOld
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+ rheology.lambda(t - tau)*(I*tr(DEpsilonOld));
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DSigmaCorr += 2.0*rheology.mu(tNext - tau)*DEpsilonOld
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+ rheology.lambda(tNext - tau)*(I*tr(DEpsilonOld));
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}
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}
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else
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{
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Info << "No DEpsilon" << endl;
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}
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}
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if(Times.size()>=2)
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{
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runTime++;
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}
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scalar tau = runTime.value() - m*runTime.deltaT().value();
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sigma += 2.0*rheology.mu(t - tau)*DEpsilon
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+ rheology.lambda(t - tau)*(I*tr(DEpsilon));
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DSigmaCorr += 2.0*rheology.mu(tNext - tau)*DEpsilon
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+ rheology.lambda(tNext - tau)*(I*tr(DEpsilon));
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DSigmaCorr -= sigma;
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}
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