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/*---------------------------------------------------------------------------*\
========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration |
\\ / A nd | Copyright (C) 2011-2016 OpenFOAM Foundation
\\/ M anipulation |
-------------------------------------------------------------------------------
License
This file is part of OpenFOAM.
OpenFOAM is free software: you can redistribute it and/or modify it
under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
OpenFOAM is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
You should have received a copy of the GNU General Public License
along with OpenFOAM. If not, see <http://www.gnu.org/licenses/>.
Application
solidDisplacementFoam
Description
Transient segregated finite-volume solver of linear-elastic,
small-strain deformation of a solid body, with optional thermal
diffusion and thermal stresses.
Simple linear elasticity structural analysis code.
Solves for the displacement vector field D, also generating the
stress tensor field sigma.
\*---------------------------------------------------------------------------*/
#include "fvCFD.H"
#include "Switch.H"
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
int main(int argc, char *argv[])
{
#include "postProcess.H"
#include "setRootCase.H"
#include "createTime.H"
#include "createMesh.H"
#include "createControls.H"
#include "createFields.H"
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
Info<< "\nCalculating displacement field\n" << endl;
while (runTime.loop())
{
Info<< "Iteration: " << runTime.value() << nl << endl;
#include "readSolidDisplacementFoamControls.H"
int iCorr = 0;
scalar initialResidual = 0;
do
{
if (thermalStress)
{
volScalarField& T = Tptr();
solve
(
fvm::ddt(T) == fvm::laplacian(DT, T)
);
}
{
fvVectorMatrix DEqn
(
fvm::d2dt2(D)
==
fvm::laplacian(2*mu + lambda, D, "laplacian(DD,D)")
+ divSigmaExp
);
if (thermalStress)
{
const volScalarField& T = Tptr();
DEqn += fvc::grad(threeKalpha*T);
}
//DEqn.setComponentReference(1, 0, vector::X, 0);
//DEqn.setComponentReference(1, 0, vector::Z, 0);
initialResidual = DEqn.solve().max().initialResidual();
if (!compactNormalStress)
{
divSigmaExp = fvc::div(DEqn.flux());
}
}
{
volTensorField gradD(fvc::grad(D));
sigmaD = mu*twoSymm(gradD) + (lambda*I)*tr(gradD);
if (compactNormalStress)
{
divSigmaExp = fvc::div
(
sigmaD - (2*mu + lambda)*gradD,
"div(sigmaD)"
);
}
else
{
divSigmaExp += fvc::div(sigmaD);
}
}
} while (initialResidual > convergenceTolerance && ++iCorr < nCorr);
#include "calculateStress.H"
Info<< "ExecutionTime = " << runTime.elapsedCpuTime() << " s"
<< " ClockTime = " << runTime.elapsedClockTime() << " s"
<< nl << endl;
}
Info<< "End\n" << endl;
return 0;
}
// ************************************************************************* //
|
