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fe_engine_template_cohesive.cc
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Fri, Feb 21, 08:41

fe_engine_template_cohesive.cc
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/**
* @file fe_engine_template_cohesive.cc
*
* @author Marco Vocialta <marco.vocialta@epfl.ch>
* @author Nicolas Richart <nicolas.richart@epfl.ch>
*
* @date creation: Wed Oct 31 2012
* @date last modification: Fri Jun 13 2014
*
* @brief Specialization of the FEEngineTemplate for cohesive element
*
* @section LICENSE
*
* Copyright (©) 2014 EPFL (Ecole Polytechnique Fédérale de Lausanne)
* Laboratory (LSMS - Laboratoire de Simulation en Mécanique des Solides)
*
* Akantu is free software: you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License as published by the Free
* Software Foundation, either version 3 of the License, or (at your option) any
* later version.
*
* Akantu 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 Lesser General Public License for more
* details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with Akantu. If not, see <http://www.gnu.org/licenses/>.
*
*/
/* -------------------------------------------------------------------------- */
#include "fe_engine_template.hh"
#include "shape_cohesive.hh"
__BEGIN_AKANTU__
/* -------------------------------------------------------------------------- */
/* compatibility functions */
/* -------------------------------------------------------------------------- */
template <>
Real FEEngineTemplate<IntegratorGauss, ShapeLagrange, _ek_cohesive>::integrate(const Array<Real> & f,
const ElementType & type,
const GhostType & ghost_type,
const Array<UInt> & filter_elements) const{
AKANTU_DEBUG_IN();
#ifndef AKANTU_NDEBUG
UInt nb_element = mesh.getNbElement(type, ghost_type);
if(filter_elements != empty_filter) nb_element = filter_elements.getSize();
UInt nb_quadrature_points = getNbQuadraturePoints(type);
AKANTU_DEBUG_ASSERT(f.getSize() == nb_element * nb_quadrature_points,
"The vector f(" << f.getID()
<< ") has not the good size.");
AKANTU_DEBUG_ASSERT(f.getNbComponent() == 1,
"The vector f(" << f.getID()
<< ") has not the good number of component.");
#endif
Real integral = 0.;
#define INTEGRATE(type) \
integral = integrator. integrate<type>(f, \
ghost_type, \
filter_elements);
AKANTU_BOOST_COHESIVE_ELEMENT_SWITCH(INTEGRATE);
#undef INTEGRATE
AKANTU_DEBUG_OUT();
return integral;
}
/* -------------------------------------------------------------------------- */
template <>
void FEEngineTemplate<IntegratorGauss, ShapeLagrange, _ek_cohesive>
::integrate(const Array<Real> & f,
Array<Real> &intf,
UInt nb_degree_of_freedom,
const ElementType & type,
const GhostType & ghost_type,
const Array<UInt> & filter_elements) const{
#ifndef AKANTU_NDEBUG
UInt nb_element = mesh.getNbElement(type, ghost_type);
if(filter_elements == filter_elements) nb_element = filter_elements.getSize();
UInt nb_quadrature_points = getNbQuadraturePoints(type);
AKANTU_DEBUG_ASSERT(f.getSize() == nb_element * nb_quadrature_points,
"The vector f(" << f.getID() << " size " << f.getSize()
<< ") has not the good size (" << nb_element << ").");
AKANTU_DEBUG_ASSERT(f.getNbComponent() == nb_degree_of_freedom ,
"The vector f(" << f.getID()
<< ") has not the good number of component.");
AKANTU_DEBUG_ASSERT(intf.getNbComponent() == nb_degree_of_freedom,
"The vector intf(" << intf.getID()
<< ") has not the good number of component.");
AKANTU_DEBUG_ASSERT(intf.getSize() == nb_element,
"The vector intf(" << intf.getID()
<< ") has not the good size.");
#endif
#define INTEGRATE(type) \
integrator. integrate<type>(f, \
intf, \
nb_degree_of_freedom, \
ghost_type, \
filter_elements);
AKANTU_BOOST_COHESIVE_ELEMENT_SWITCH(INTEGRATE);
#undef INTEGRATE
}
/* -------------------------------------------------------------------------- */
template <>
void FEEngineTemplate<IntegratorGauss, ShapeLagrange, _ek_cohesive>::
gradientOnQuadraturePoints(__attribute__((unused)) const Array<Real> &u,
__attribute__((unused)) Array<Real> &nablauq,
__attribute__((unused)) const UInt nb_degree_of_freedom,
__attribute__((unused)) const ElementType & type,
__attribute__((unused)) const GhostType & ghost_type,
__attribute__((unused)) const Array<UInt> & filter_elements) const {
AKANTU_DEBUG_TO_IMPLEMENT();
}
/* -------------------------------------------------------------------------- */
template<>
template<>
void FEEngineTemplate<IntegratorGauss, ShapeLagrange, _ek_cohesive>::
computeNormalsOnControlPoints<_cohesive_1d_2>(__attribute__((unused)) const Array<Real> & field,
Array<Real> & normal,
const GhostType & ghost_type) const {
AKANTU_DEBUG_IN();
AKANTU_DEBUG_ASSERT(mesh.getSpatialDimension() == 1, "Mesh dimension must be 1 to compute normals on 1D cohesive elements!");
const ElementType type = _cohesive_1d_2;
const ElementType facet_type = Mesh::getFacetType(type);
UInt nb_element = mesh.getConnectivity(type, ghost_type).getSize();
normal.resize(nb_element);
Array<Element> & facets =
mesh.getMeshFacets().getSubelementToElement(type, ghost_type);
Array<std::vector<Element> > & segments =
mesh.getMeshFacets().getElementToSubelement(facet_type, ghost_type);
Real values[2];
for (UInt elem = 0; elem < nb_element; ++elem) {
for (UInt p = 0; p < 2; ++p) {
Element f = facets(elem, p);
Element seg = segments(f.element)[0];
mesh.getBarycenter(seg.element, seg.type, &(values[p]), seg.ghost_type);
}
Real difference = values[0] - values[1];
AKANTU_DEBUG_ASSERT(difference != 0.,
"Error in normal computation for cohesive elements");
normal(elem) = difference / std::abs(difference);
}
AKANTU_DEBUG_OUT();
}
__END_AKANTU__

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