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test_solid_mechanics_model_circle_2.cc
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Thu, May 9, 23:14

test_solid_mechanics_model_circle_2.cc
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/**
* @file test_solid_mechanics_model.cc
* @author Nicolas Richart <nicolas.richart@epfl.ch>
* @date Tue Jul 27 14:34:13 2010
*
* @brief test of the class SolidMechanicsModel
*
* @section LICENSE
*
* \<insert license here\>
*
*/
/* -------------------------------------------------------------------------- */
#include "aka_common.hh"
#include "mesh.hh"
#include "mesh_io.hh"
#include "mesh_io_msh.hh"
#include "solid_mechanics_model.hh"
#include "material.hh"
#include "fem.hh"
/* -------------------------------------------------------------------------- */
#ifdef AKANTU_USE_IOHELPER
# include "io_helper.h"
#endif //AKANTU_USE_IOHELPER
using namespace akantu;
static void trac(__attribute__ ((unused)) double * position,double * stress){
memset(stress,0,sizeof(Real)*4);
stress[0] = 1000;
stress[3] = 1000;
}
int main(int argc, char *argv[])
{
UInt max_steps = 10000;
Real epot, ekin;
Mesh mesh(2);
MeshIOMSH mesh_io;
mesh_io.read("circle2.msh", mesh);
SolidMechanicsModel * model = new SolidMechanicsModel(mesh);
/// model initialization
model->initVectors();
UInt nb_nodes = model->getFEM().getMesh().getNbNodes();
memset(model->getForce().values, 0, 2*nb_nodes*sizeof(Real));
memset(model->getVelocity().values, 0, 2*nb_nodes*sizeof(Real));
memset(model->getAcceleration().values, 0, 2*nb_nodes*sizeof(Real));
memset(model->getDisplacement().values, 0, 2*nb_nodes*sizeof(Real));
memset(model->getResidual().values, 0, 2*nb_nodes*sizeof(Real));
memset(model->getMass().values, 1, nb_nodes*sizeof(Real));
model->readMaterials("material.dat");
model->initMaterials();
model->initModel();
Real time_step = model->getStableTimeStep();
model->setTimeStep(time_step/10.);
model->assembleMassLumped();
std::cout << *model << std::endl;
FEM & fem_boundary = model->getFEMBoundary();
fem_boundary.initShapeFunctions();
fem_boundary.computeNormalsOnQuadPoints();
model->computeForcesFromFunction(trac,0);
#ifdef AKANTU_USE_IOHELPER
DumperParaview dumper;
dumper.SetMode(BASE64);
dumper.SetPoints(model->getFEM().getMesh().getNodes().values, 2, nb_nodes, "coordinates");
dumper.SetConnectivity((int *)model->getFEM().getMesh().getConnectivity(_triangle_6).values,
TRIANGLE2, model->getFEM().getMesh().getNbElement(_triangle_6), C_MODE);
dumper.AddNodeDataField(model->getDisplacement().values, 2, "displacements");
dumper.AddNodeDataField(model->getVelocity().values, 2, "velocity");
dumper.AddNodeDataField(model->getForce().values, 2, "force");
dumper.AddNodeDataField(model->getMass().values, 1, "Mass");
dumper.AddNodeDataField(model->getResidual().values, 2, "residual");
dumper.AddElemDataField(model->getMaterial(0).getStrain(_triangle_6).values, 4, "strain");
dumper.AddElemDataField(model->getMaterial(0).getStress(_triangle_6).values, 4, "stress");
dumper.SetEmbeddedValue("displacements", 1);
dumper.SetEmbeddedValue("force", 1);
dumper.SetEmbeddedValue("residual", 1);
dumper.SetEmbeddedValue("velocity", 1);
dumper.SetPrefix("paraview/");
dumper.Init();
dumper.Dump();
#endif //AKANTU_USE_IOHELPER
for(UInt s = 0; s < max_steps; ++s) {
model->explicitPred();
model->updateResidual();
model->updateAcceleration();
model->explicitCorr();
epot = model->getPotentialEnergy();
ekin = model->getKineticEnergy();
std::cout << s << " " << epot << " " << ekin << " " << epot + ekin
<< std::endl;
#ifdef AKANTU_USE_IOHELPER
if(s % 100 == 0) dumper.Dump();
#endif //AKANTU_USE_IOHELPER
}
return EXIT_SUCCESS;
}

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