206 lines
6.2 KiB
C
206 lines
6.2 KiB
C
/*---------------------------------------------------------------------------*\
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========= |
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\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
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\\ / O peration |
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\\ / A nd | Copyright (C) 2004-2007 Hrvoje Jasak
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\\/ M anipulation |
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-------------------------------------------------------------------------------
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License
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This file is part of OpenFOAM.
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OpenFOAM is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by the
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Free Software Foundation; either version 2 of the License, or (at your
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option) any later version.
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OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with OpenFOAM; if not, write to the Free Software Foundation,
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Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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Application
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elasticContactSolidFoam
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Description
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Transient/steady-state segregated finite-volume solver for small strain
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elastic solid bodies in contact, using an total strain total Lagrangian
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approach.
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Works in parallel but mesh.movePoints sometimes fails for some unknown
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reason depending on the decomposition.
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Solves for the displacement increment vector field DU, also generating the
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stress tensor field sigma.
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It is only for frictionless contact, friction not implemented yet.
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Author
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Philip Cardiff
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\*---------------------------------------------------------------------------*/
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#include "fvCFD.H"
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#include "rheologyModel.H"
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#include "contactProblem.H"
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#include "volPointInterpolation.H"
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#include "pointPatchInterpolation.H"
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#include "primitivePatchInterpolation.H"
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#include "fixedValuePointPatchFields.H"
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#include "pointFields.H"
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#include "pointMesh.H"
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#include "pointBoundaryMesh.H"
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#include "primitivePatchInterpolation.H"
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#include "twoDPointCorrector.H"
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#include "plane.H"
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#include "meshSearch.H"
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//#include "leastSquaresVolPointInterpolation.H"
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#include "OFstream.H"
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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int main(int argc, char *argv[])
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{
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# include "setRootCase.H"
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# include "createTime.H"
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# include "createMesh.H"
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# include "createFields.H"
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# include "readDivSigmaExpMethod.H"
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# include "createGlobalToLocalFaceZonePointMap.H"
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// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
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Info<< "\nStarting time loop\n" << endl;
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for (runTime++; !runTime.end(); runTime++)
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{
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Info<< "Time: " << runTime.timeName() << endl;
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# include "readContactControls.H"
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# include "readStressedFoamControls.H"
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//-- for moving the mesh and then back again
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vectorField oldMeshPoints = mesh.allPoints();
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int iCorr = 0;
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lduMatrix::solverPerformance solverPerf;
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word solverName;
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lduMatrix::debug = 0;
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scalar residual = GREAT;
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scalar initialResidual = 0;
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scalar relativeResidual = GREAT;
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//- Predictor step
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if (predictor)
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{
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Info << "\nPredicting U, gradU and snGradU based on V, gradV and snGradV\n" << endl;
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U += V*runTime.deltaT();
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gradU += gradV*runTime.deltaT();
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snGradU += snGradV*runTime.deltaT();
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}
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do //- start of momentum loop
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{
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U.storePrevIter();
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//- correct the contact boundaries
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if(iCorr % uEqnContactCorrFreq == 0)
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{
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Info << "\t\tCorrecting contact in the momentum loop "
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<< "iteration: " << iCorr
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<< ", residual: " << residual
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<< endl;
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//# include "moveMeshLeastSquares.H"
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# include "moveSolidMesh.H"
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contact.correct();
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mesh.movePoints(oldMeshPoints);
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}
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# include "calculateDivSigmaExp.H"
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fvVectorMatrix UEqn
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(
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fvm::d2dt2(rho, U)
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==
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fvm::laplacian(2*mu + lambda, U, "laplacian(DU,U)")
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+ divSigmaExp
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);
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solverPerf = UEqn.solve();
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U.relax();
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solverName = solverPerf.solverName();
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gradU = fvc::grad(U);
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snGradU = fvc::snGrad(U);
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residual = solverPerf.initialResidual();
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if(iCorr == 0)
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{
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initialResidual = solverPerf.initialResidual();
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}
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# include "calculateRelativeResidual.H"
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Info << "\tTime " << runTime.value()
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<< ", Corrector " << iCorr
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<< ", Solving for " << U.name()
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<< " using " << solverPerf.solverName()
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<< ", residual = " << solverPerf.initialResidual()
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<< ", relative residual = " << relativeResidual << endl;
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} //- end of momentum loop
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while
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(
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//relativeResidual > convergenceTolerance
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residual > convergenceTolerance
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&&
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++iCorr < nCorr
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);
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// Print out info per contact iteration
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Info << "\t\tSolving for " << U.name()
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<< " using " << solverName
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<< ", Initial residual = " << initialResidual
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<< ", Final residual = " << solverPerf.initialResidual()
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<< ", No outer iterations " << iCorr << endl;
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lduMatrix::debug = 1;
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V = fvc::ddt(U);
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gradV = fvc::ddt(gradU);
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snGradV = (snGradU - snGradU.oldTime())/runTime.deltaT();
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# include "calculateEpsilonSigma.H"
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# include "writeFields.H"
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//# include "moveMeshLeastSquares.H"
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//# include "moveSolidMesh.H"
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//# include "printContactResults.H"
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// mesh.movePoints(oldMeshPoints);
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Info<< "ExecutionTime = " << runTime.elapsedCpuTime() << " s"
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<< " ClockTime = " << runTime.elapsedClockTime() << " s"
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<< endl << endl;
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}
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Info<< "End\n" << endl;
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return(0);
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}
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// ************************************************************************* //
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