applications/solvers/solidMechanics/elasticIncrSolidFoam/elasticIncrSolidFoam.C

   1 /*---------------------------------------------------------------------------*\
   2   =========                 |
   3   \\      /  F ield         | foam-extend: Open Source CFD
   4    \\    /   O peration     | Version:     3.2
   5     \\  /    A nd           | Web:         http://www.foam-extend.org
   6      \\/     M anipulation  | For copyright notice see file Copyright
   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     elasticIncrSolidFoam
  26
  27 Description
  28     Transient/steady-state segregated finite-volume solver for small strain
  29     elastic solid bodies.
  30
  31     Displacement Increment field DU is solved for using a incremental total
  32     Lagrangian approach,
  33     also generating the strain tensor field epsilon and stress tensor
  34     field sigma.
  35
  36     With optional multi-material solid interface correction ensuring
  37     correct tractions on multi-material interfaces
  38
  39 Author
  40     Philip Cardiff
  41     multi-material by Tukovic et al. 2012
  42
  43 \*---------------------------------------------------------------------------*/
  44
  45 #include "fvCFD.H"
  46 #include "constitutiveModel.H"
  47 #include "solidInterface.H"
  48
  49 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
  50
  51 int main(int argc, char *argv[])
  52 {
  53 #   include "setRootCase.H"
  54 #   include "createTime.H"
  55 #   include "createMesh.H"
  56 #   include "createFields.H"
  57 #   include "readDivDSigmaExpMethod.H"
  58 #   include "createSolidInterfaceIncr.H"
  59
  60 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
  61
  62     Info<< "\nStarting time loop\n" << endl;
  63
  64     while(runTime.loop())
  65     {
  66         Info<< "Time = " << runTime.timeName() << nl << endl;
  67
  68 #       include "readSolidMechanicsControls.H"
  69
  70         int iCorr = 0;
  71         scalar initialResidual = 0;
  72         scalar relativeResidual = 1.0;
  73         lduMatrix::solverPerformance solverPerf;
  74         lduMatrix::debug = 0;
  75
  76         do
  77         {
  78             DU.storePrevIter();
  79
  80 #           include "calculateDivDSigmaExp.H"
  81
  82             // Linear momentum equation
  83             fvVectorMatrix DUEqn
  84             (
  85                 fvm::d2dt2(rho, DU)
  86              ==
  87                 fvm::laplacian(2*muf + lambdaf, DU, "laplacian(DDU,DU)")
  88               + divDSigmaExp
  89             );
  90
  91             if (solidInterfaceCorr)
  92             {
  93                 solidInterfacePtr->correct(DUEqn);
  94             }
  95
  96             solverPerf = DUEqn.solve();
  97
  98             if (iCorr == 0)
  99             {
 100                 // initialResidual = solverPerf.initialResidual();
 101                 // force at least two outer correctors
 102                 initialResidual = 1.0;
 103             }
 104
 105             DU.relax();
 106
 107             //gradDU = solidInterfacePtr->grad(DU);
 108             gradDU = fvc::grad(DU);
 109
 110 #           include "calculateRelativeResidual.H"
 111
 112             if (iCorr % infoFrequency == 0)
 113             {
 114                 Info<< "\tTime " << runTime.value()
 115                     << ", Corrector " << iCorr
 116                     << ", Solving for " << U.name()
 117                     << " using " << solverPerf.solverName()
 118                     << ", res = " << solverPerf.initialResidual()
 119                     << ", rel res = " << relativeResidual
 120                     << ", inner iters = " << solverPerf.nIterations() << endl;
 121             }
 122         }
 123         while
 124         (
 125             solverPerf.initialResidual() > convergenceTolerance
 126             //relativeResidual > convergenceTolerance
 127          && ++iCorr < nCorr
 128         );
 129
 130         Info<< nl << "Time " << runTime.value()
 131             << ", Solving for " << DU.name()
 132             << ", Initial residual = " << initialResidual
 133             << ", Final residual = " << solverPerf.initialResidual()
 134             << ", Relative residual = " << relativeResidual
 135             << ", No outer iterations " << iCorr
 136             << nl << "ExecutionTime = " << runTime.elapsedCpuTime() << " s"
 137             << "  ClockTime = " << runTime.elapsedClockTime() << " s"
 138             << endl;
 139
 140 #       include "calculateDEpsilonDSigma.H"
 141
 142         U += DU;
 143         sigma += DSigma;
 144         epsilon += DEpsilon;
 145
 146 #       include "writeFields.H"
 147
 148         Info<< "ExecutionTime = "
 149             << runTime.elapsedCpuTime()
 150             << " s\n\n" << endl;
 151     }
 152
 153     Info<< "End\n" << endl;
 154
 155     return(0);
 156 }
 157
 158
 159 // ************************************************************************* //