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rAKA/test/test_parallel_cohesive/test_cohesive_facet_stress_synchronizer/test_cohesive_facet_stress_synchronizer.cc
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test_cohesive_facet_stress_synchronizer.cc
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/**
* @file test_cohesive_facet_stress_synchronizer.cc
*
* @author Marco Vocialta <marco.vocialta@epfl.ch>
*
*
* @brief Test for facet stress synchronizer
*
* @section LICENSE
*
* Copyright (©) 2010-2012, 2014 EPFL (Ecole Polytechnique Fédérale de Lausanne)
* Laboratory (LSMS - Laboratoire de Simulation en Mécanique des Solides)
*
*/
/* -------------------------------------------------------------------------- */
#include <limits>
#include <fstream>
#include <iostream>
/* -------------------------------------------------------------------------- */
#include "solid_mechanics_model_cohesive.hh"
/* -------------------------------------------------------------------------- */
using namespace akantu;
Real function(Real constant, Real x, Real y, Real z) {
return constant + 2. * x + 3. * y + 4 * z;
}
int main(int argc, char *argv[]) {
initialize("material.dat", argc, argv);
const UInt spatial_dimension = 3;
ElementType type = _tetrahedron_10;
ElementType type_facet = Mesh::getFacetType(type);
Math::setTolerance(1.e-11);
Mesh mesh(spatial_dimension);
StaticCommunicator & comm = StaticCommunicator::getStaticCommunicator();
Int psize = comm.getNbProc();
Int prank = comm.whoAmI();
akantu::MeshPartition * partition = NULL;
if(prank == 0) {
// Read the mesh
mesh.read("tetrahedron.msh");
/// partition the mesh
partition = new MeshPartitionScotch(mesh, spatial_dimension);
partition->partitionate(psize);
}
SolidMechanicsModelCohesive model(mesh);
model.initParallel(partition, NULL, true);
model.initFull(SolidMechanicsModelCohesiveOptions(_explicit_lumped_mass, true));
Array<Real> & position = mesh.getNodes();
/* ------------------------------------------------------------------------ */
/* Facet part */
/* ------------------------------------------------------------------------ */
/// compute quadrature points positions on facets
const Mesh & mesh_facets = model.getMeshFacets();
UInt nb_facet = mesh_facets.getNbElement(type_facet);
UInt nb_quad_per_facet = model.getFEEngine("FacetsFEEngine").getNbQuadraturePoints(type_facet);
UInt nb_tot_quad = nb_quad_per_facet * nb_facet;
Array<Real> quad_facets(nb_tot_quad, spatial_dimension);
model.getFEEngine("FacetsFEEngine").interpolateOnQuadraturePoints(position,
quad_facets,
spatial_dimension,
type_facet);
/* ------------------------------------------------------------------------ */
/* End of facet part */
/* ------------------------------------------------------------------------ */
/// compute quadrature points position of the elements
UInt nb_quad_per_element = model.getFEEngine().getNbQuadraturePoints(type);
UInt nb_element = mesh.getNbElement(type);
UInt nb_tot_quad_el = nb_quad_per_element * nb_element;
Array<Real> quad_elements(nb_tot_quad_el, spatial_dimension);
model.getFEEngine().interpolateOnQuadraturePoints(position,
quad_elements,
spatial_dimension,
type);
/// assign some values to stresses
Array<Real> & stress
= const_cast<Array<Real>&>(model.getMaterial(0).getStress(type));
Array<Real>::iterator<Matrix<Real> > stress_it
= stress.begin(spatial_dimension, spatial_dimension);
for (UInt q = 0; q < nb_tot_quad_el; ++q, ++stress_it) {
/// compute values
for (UInt i = 0; i < spatial_dimension; ++i) {
for (UInt j = i; j < spatial_dimension; ++j) {
UInt index = i * spatial_dimension + j;
(*stress_it)(i, j) = function(index,
quad_elements(q, 0),
quad_elements(q, 1),
quad_elements(q, 2));
}
}
/// fill symmetrical part
for (UInt i = 0; i < spatial_dimension; ++i) {
for (UInt j = 0; j < i; ++j) {
(*stress_it)(i, j) = (*stress_it)(j, i);
}
}
// stress_it->clear();
// for (UInt i = 0; i < spatial_dimension; ++i)
// (*stress_it)(i, i) = sigma_c * 5;
}
/// compute and communicate stress on facets
model.checkCohesiveStress();
/* ------------------------------------------------------------------------ */
/* Check facet stress */
/* ------------------------------------------------------------------------ */
const Array<Real> & facet_stress = model.getStressOnFacets(type_facet);
const Array<bool> & facet_check
= model.getElementInserter().getCheckFacets(type_facet);
const Array<std::vector<Element> > & elements_to_facet
= model.getMeshFacets().getElementToSubelement(type_facet);
Array<Real>::iterator<Vector<Real> > quad_facet_it
= quad_facets.begin(spatial_dimension);
Array<Real>::const_iterator<Matrix<Real> > facet_stress_it
= facet_stress.begin(spatial_dimension, spatial_dimension * 2);
Matrix<Real> current_stress(spatial_dimension, spatial_dimension);
for (UInt f = 0; f < nb_facet; ++f) {
if (!facet_check(f) ||
(elements_to_facet(f)[0].ghost_type == _not_ghost &&
elements_to_facet(f)[1].ghost_type == _not_ghost)) {
quad_facet_it += nb_quad_per_facet;
facet_stress_it += nb_quad_per_facet;
continue;
}
for (UInt q = 0; q < nb_quad_per_facet; ++q, ++quad_facet_it, ++facet_stress_it) {
/// compute current_stress
for (UInt i = 0; i < spatial_dimension; ++i) {
for (UInt j = i; j < spatial_dimension; ++j) {
UInt index = i * spatial_dimension + j;
current_stress(i, j) = function(index,
(*quad_facet_it)(0),
(*quad_facet_it)(1),
(*quad_facet_it)(2));
}
}
/// fill symmetrical part
for (UInt i = 0; i < spatial_dimension; ++i) {
for (UInt j = 0; j < i; ++j) {
current_stress(i, j) = current_stress(j, i);
}
}
/// compare it to interpolated one
for (UInt s = 0; s < 2; ++s) {
Matrix<Real> stress_to_check(facet_stress_it->storage()
+ s * spatial_dimension * spatial_dimension,
spatial_dimension,
spatial_dimension);
for (UInt i = 0; i < spatial_dimension; ++i) {
for (UInt j = 0; j < spatial_dimension; ++j) {
if (!Math::are_float_equal(stress_to_check(i, j), current_stress(i, j))) {
std::cout << "Stress doesn't match" << std::endl;
finalize();
return EXIT_FAILURE;
}
}
}
}
}
}
finalize();
if (prank == 0)
std::cout << "OK: test_cohesive_facet_stress_synchronizer passed!" << std::endl;
return EXIT_SUCCESS;
}
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