138 lines
4.2 KiB
C
138 lines
4.2 KiB
C
/*---------------------------------------------------------------------------*\
|
|
========= |
|
|
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
|
|
\\ / O peration |
|
|
\\ / A nd | Copyright held by original author
|
|
\\/ 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 2 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, write to the Free Software Foundation,
|
|
Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
|
|
|
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 "setRootCase.H"
|
|
|
|
# include "createTime.H"
|
|
# include "createMesh.H"
|
|
# include "readMechanicalProperties.H"
|
|
# include "readThermalProperties.H"
|
|
# include "readSolidDisplacementFoamControls.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().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;
|
|
}
|
|
|
|
|
|
// ************************************************************************* //
|