applications/solvers/solidMechanics/elasticPlasticSolidFoam/elasticPlasticSolidFoam.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     elasticPlasticSolidFoam
  26
  27 Description
  28     Transient/steady-state segregated finite-volume solver for small strain
  29     elastic plastic solid bodies.
  30
  31     Displacement increment field DU is solved for using a total Lagrangian
  32     approach, also generating the strain tensor field epsilon, the plastic
  33     strain field epsilonP and stress tensor field sigma.
  34
  35 Author
  36     A. Karac UCD/Zenica
  37     P. Cardiff UCD
  38     Aitken relaxation by T. Tang DTU
  39
  40 \*---------------------------------------------------------------------------*/
  41
  42 #include "fvCFD.H"
  43 #include "constitutiveModel.H"
  44 #include "solidContactFvPatchVectorField.H"
  45
  46 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
  47
  48 int main(int argc, char *argv[])
  49 {
  50 #   include "setRootCase.H"
  51 #   include "createTime.H"
  52 #   include "createMesh.H"
  53 #   include "createFields.H"
  54 #   include "createHistory.H"
  55 #   include "readDivDSigmaExpMethod.H"
  56
  57 // * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
  58
  59     Info<< "\nStarting time loop\n" << endl;
  60
  61     while(runTime.loop())
  62     {
  63         Info<< "Time = " << runTime.timeName() << nl << endl;
  64
  65 #       include "readSolidMechanicsControls.H"
  66
  67         int iCorr = 0;
  68         lduMatrix::solverPerformance solverPerf;
  69         scalar initialResidual = 1.0;
  70         scalar relativeResidual = 1.0;
  71         scalar plasticResidual = 1.0;
  72         lduMatrix::debug = 0;
  73
  74         do
  75         {
  76             DU.storePrevIter();
  77
  78 #           include "calculateDivDSigmaExp.H"
  79
  80             fvVectorMatrix DUEqn
  81             (
  82                 rho*fvm::d2dt2(DU)
  83              ==
  84                 fvm::laplacian(2*muf + lambdaf, DU, "laplacian(DDU,DU)")
  85               + divDSigmaExp
  86               - fvc::div(2*muf*(mesh.Sf() & fvc::interpolate(DEpsilonP)))
  87             );
  88
  89             solverPerf = DUEqn.solve();
  90
  91             if (iCorr == 0)
  92             {
  93                 initialResidual = solverPerf.initialResidual();
  94             }
  95
  96             if (aitkenRelax)
  97             {
  98 #               include "aitkenRelaxation.H"
  99             }
 100             else
 101             {
 102                 DU.relax();
 103             }
 104
 105             gradDU = fvc::grad(DU);
 106
 107 #           include "calculateRelativeResidual.H"
 108 #           include "calculateDEpsilonDSigma.H"
 109
 110             // correct plastic strain increment
 111             rheology.correct();
 112
 113 #           include "calculatePlasticResidual.H"
 114
 115             if (iCorr % infoFrequency == 0)
 116             {
 117                 Info<< "\tTime " << runTime.value()
 118                     << ", Corr " << iCorr
 119                     //<< ", Solving for " << DU.name()
 120                     // << " using " << solverPerf.solverName()
 121                     << ", res = " << solverPerf.initialResidual()
 122                     << ", rel res = " << relativeResidual
 123                     << ", plastic res = " << plasticResidual;
 124                 if (aitkenRelax)
 125                 {
 126                     Info<< ", aitken = " << aitkenTheta;
 127                 }
 128                 Info<< ", inner iters = " << solverPerf.nIterations() << endl;
 129             }
 130         }
 131         while
 132         (
 133             iCorr++ < 2
 134             ||
 135             (
 136                 //solverPerf.initialResidual() > convergenceTolerance
 137                 relativeResidual > convergenceTolerance
 138              && iCorr < nCorr
 139             )
 140         );
 141
 142         Info<< nl << "Time " << runTime.value() << ", Solving for " << DU.name()
 143             << ", Initial residual = " << initialResidual
 144             << ", Final residual = " << solverPerf.initialResidual()
 145             << ", Final rel residual = " << relativeResidual
 146             << ", No outer iterations " << iCorr << endl;
 147
 148         // Update total quantities
 149         U += DU;
 150         epsilon += DEpsilon;
 151         epsilonP += rheology.DEpsilonP();
 152         sigma += DSigma;
 153
 154         // Update yields stresses
 155         rheology.updateYieldStress();
 156
 157 #       include "writeFields.H"
 158 #       include "writeHistory.H"
 159
 160         Info<< "ExecutionTime = " << runTime.elapsedCpuTime() << " s"
 161             << "  ClockTime = " << runTime.elapsedClockTime() << " s"
 162             << nl << endl;
 163     }
 164
 165   Info<< "End\n" << endl;
 166
 167   return(0);
 168 }
 169
 170
 171 // ************************************************************************* //