applications/solvers/solidMechanics/elasticNonLinTLSolidFoam/elasticNonLinTLSolidFoam.C

   1 /*---------------------------------------------------------------------------*\
   2   =========                 |
   3   \\      /  F ield         | foam-extend: Open Source CFD
   4    \\    /   O peration     |
   5     \\  /    A nd           | For copyright notice see file Copyright
   6      \\/     M anipulation  |
   7 -------------------------------------------------------------------------------
   8 License
   9     This file is part of foam-extend.
  10
  11     foam-extend is free software: you can redistribute it and/or modify it
  12     under the terms of the GNU General Public License as published by the
  13     Free Software Foundation, either version 3 of the License, or (at your
  14     option) any later version.
  15
  16     foam-extend is distributed in the hope that it will be useful, but
  17     WITHOUT ANY WARRANTY; without even the implied warranty of
  18     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  19     General Public License for more details.
  20
  21     You should have received a copy of the GNU General Public License
  22     along with foam-extend.  If not, see <http://www.gnu.org/licenses/>.
  23
  24 Application
  25     elasticNonLinTLSolidFoam
  26
  27 Description
  28     Finite volume structural solver employing a total strain total
  29     Lagrangian approach.
  30
  31     Valid for finite strains, finite displacements and finite rotations.
  32
  33 Author
  34     Micheal Leonard
  35     Philip Cardiff
  36
  37 \*---------------------------------------------------------------------------*/
  38
  39 #include "fvCFD.H"
  40 #include "constitutiveModel.H"
  41 #include "solidInterface.H"
  42
  43 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
  44
  45 int main(int argc, char *argv[])
  46 {
  47 #   include "setRootCase.H"
  48 #   include "createTime.H"
  49 #   include "createMesh.H"
  50 #   include "createFields.H"
  51 #   include "createSolidInterfaceNonLin.H"
  52
  53 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
  54
  55     Info<< "\nStarting time loop\n" << endl;
  56
  57     while(runTime.loop())
  58     {
  59         Info<< "Time: " << runTime.timeName() << nl << endl;
  60
  61 #       include "readSolidMechanicsControls.H"
  62
  63       int iCorr = 0;
  64       scalar initialResidual = 0;
  65       lduMatrix::solverPerformance solverPerf;
  66       scalar relativeResidual = 1.0;
  67       lduMatrix::debug = 0;
  68
  69       do
  70       {
  71           U.storePrevIter();
  72
  73           surfaceTensorField shearGradU
  74           (
  75               "shearGradU",
  76               (I - sqr(n)) & fvc::interpolate(gradU)
  77           );
  78
  79           fvVectorMatrix UEqn
  80           (
  81               fvm::d2dt2(rho, U)
  82            ==
  83               fvm::laplacian(2*muf + lambdaf, U, "laplacian(DU,U)")
  84 //             + fvc::div
  85 //               (
  86 //                   -(mu + lambda)*gradU
  87 //                   + mu*gradU.T()
  88 //                   + mu*(gradU & gradU.T())
  89 //                   + lambda*tr(gradU)*I
  90 //                   + 0.5*lambda*tr(gradU & gradU.T())*I
  91 //                   + (sigma & gradU),
  92 //                   "div(sigma)"
  93 //               )
  94             + fvc::div
  95               (
  96                   mesh.magSf()*
  97                   (
  98                       - (muf + lambdaf)*(fvc::snGrad(U) & (I - n*n))
  99                       + lambdaf*tr(shearGradU & (I - n*n))*n
 100                       + muf*(shearGradU & n)
 101                       + muf*(n & fvc::interpolate(gradU & gradU.T()))
 102                       + 0.5*lambdaf*(n*tr(fvc::interpolate(gradU & gradU.T())))
 103                       + (n & fvc::interpolate(sigma & gradU))
 104                   )
 105               )
 106           );
 107
 108           if (solidInterfaceCorr)
 109           {
 110               solidInterfacePtr->correct(UEqn);
 111           }
 112
 113           solverPerf = UEqn.solve();
 114
 115           if (iCorr == 0)
 116           {
 117               initialResidual = solverPerf.initialResidual();
 118           }
 119
 120           U.relax();
 121
 122           //gradU = solidInterfacePtr->grad(U);
 123           gradU = fvc::grad(U);
 124
 125 #         include "calculateEpsilonSigma.H"
 126 #         include "calculateRelativeResidual.H"
 127
 128           Info<< "\tTime " << runTime.value()
 129               << ", Corrector " << iCorr
 130               << ", Solving for " << U.name()
 131               << " using " << solverPerf.solverName()
 132               << ", residual = " << solverPerf.initialResidual()
 133               << ", relative residual = " << relativeResidual
 134               << ", inner iterations " << solverPerf.nIterations() << endl;
 135       }
 136       while
 137           (
 138               solverPerf.initialResidual() > convergenceTolerance
 139               //relativeResidual > convergenceTolerance
 140               &&
 141               ++iCorr < nCorr
 142               );
 143
 144       Info<< nl << "Time " << runTime.value() << ", Solving for " << U.name()
 145           << ", Initial residual = " << initialResidual
 146           << ", Final residual = " << solverPerf.initialResidual()
 147           << ", Relative residual = " << relativeResidual
 148           << ", No outer iterations " << iCorr
 149           << nl << "ExecutionTime = " << runTime.elapsedCpuTime() << " s"
 150           << "  ClockTime = " << runTime.elapsedClockTime() << " s"
 151           << endl;
 152
 153 #     include "writeFields.H"
 154
 155       Info<< "ExecutionTime = "
 156           << runTime.elapsedCpuTime()
 157           << " s\n\n" << endl;
 158     }
 159
 160     Info<< "End\n" << endl;
 161
 162     return(0);
 163 }
 164
 165
 166 // ************************************************************************* //