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rAKA/src/model/time_step_solvers/time_step_solver_default.cc
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time_step_solver_default.cc
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/**
* @file time_step_solver_default.cc
*
* @author Nicolas Richart <nicolas.richart@epfl.ch>
*
* @date Wed Sep 16 10:20:55 2015
*
* @brief Default implementation of the time step solver
*
* @section LICENSE
*
* Copyright (©) 2010-2011 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 "time_step_solver_default.hh"
#include "dof_manager_default.hh"
#include "sparse_matrix_aij.hh"
#include "integration_scheme_1st_order.hh"
#include "integration_scheme_2nd_order.hh"
/* -------------------------------------------------------------------------- */
__BEGIN_AKANTU__
/* -------------------------------------------------------------------------- */
// void TimeStepSolverDefault::updateAcceleration() {
// AKANTU_DEBUG_IN();
// updateResidualInternal();
// if (method == _explicit_lumped_mass) {
// /* residual = residual_{n+1} - M * acceleration_n therefore
// solution = increment acceleration not acceleration */
// solveLumped(*increment_acceleration, *mass, *residual, *blocked_dofs,
// f_m2a);
// } else if (method == _explicit_consistent_mass) {
// solve<NewmarkBeta::_acceleration_corrector>(*increment_acceleration);
// }
// AKANTU_DEBUG_OUT();
// }
/* -------------------------------------------------------------------------- */
TimeStepSolverDefault::TimeStepSolverDefault(DOFManagerDefault & dof_manager,
const TimeStepSolverType & type,
const ID & id, UInt memory_id)
: TimeStepSolver(dof_manager, type, id, memory_id),
dof_manager(dof_manager), is_mass_lumped(false) {
switch (type) {
case _tsst_forward_euler_lumped:
this->is_mass_lumped = true;
case _tsst_forward_euler: {
this->integration_scheme = new ForwardEuler(dof_manager);
break;
}
case _tsst_trapezoidal_rule_1: {
this->integration_scheme = new TrapezoidalRule1(dof_manager);
break;
}
case _tsst_backward_euler: {
this->integration_scheme = new BackwardEuler(dof_manager);
break;
}
case _tsst_central_difference_lumped:
this->is_mass_lumped = true;
case _tsst_central_difference: {
this->integration_scheme = new CentralDifference(dof_manager);
break;
}
case _tsst_fox_goodwin: {
this->integration_scheme = new FoxGoodwin(dof_manager);
break;
}
case _tsst_trapezoidal_rule_2: {
this->integration_scheme = new TrapezoidalRule2(dof_manager);
break;
}
case _tsst_linear_acceleration: {
this->integration_scheme = new LinearAceleration(dof_manager);
break;
}
// Write a c++11 version of the constructor with initializer list that
// contains the arguments for the integration scheme
case _tsst_generalized_trapezoidal:
case _tsst_newmark_beta:
AKANTU_EXCEPTION(
"This time step solvers cannot be created with this constructor");
}
}
/* -------------------------------------------------------------------------- */
TimeStepSolverDefault::~TimeStepSolverDefault() {
delete this->integration_scheme;
}
/* -------------------------------------------------------------------------- */
void TimeStepSolverDefault::predictor() {
AKANTU_DEBUG_IN();
TimeStepSolver::predictor();
this->integration_scheme->predictor(this->dof_id, this->time_step);
// UInt nb_degree_of_freedom = u.getSize() * u.getNbComponent();
// Array<Real>::scalar_iterator incr_it =
// increment.begin_reinterpret(nb_degree_of_freedom);
// Array<Real>::const_scalar_iterator u_it =
// u.begin_reinterpret(nb_degree_of_freedom);
// Array<Real>::const_scalar_iterator u_end =
// u.end_reinterpret(nb_degree_of_freedom);
// for (; u_it != u_end; ++u_it, ++incr_it) {
// *incr_it = *u_it - *incr_it;
// }
AKANTU_DEBUG_OUT();
}
/* -------------------------------------------------------------------------- */
void TimeStepSolverDefault::corrector() {
AKANTU_DEBUG_IN();
TimeStepSolver::corrector();
this->integration_scheme->corrector(
IntegrationScheme::SolutionType(this->solution_type), this->dof_id,
this->time_step);
AKANTU_DEBUG_OUT();
}
/* -------------------------------------------------------------------------- */
void TimeStepSolverDefault::assembleJacobian() {
AKANTU_DEBUG_IN();
TimeStepSolver::assembleJacobian();
this->integration_scheme->assembleJacobian(
IntegrationScheme::SolutionType(this->solution_type), this->time_step);
AKANTU_DEBUG_OUT();
}
/* -------------------------------------------------------------------------- */
void TimeStepSolverDefault::assembleResidual() {
AKANTU_DEBUG_IN();
TimeStepSolver::assembleResidual();
// if (!this->is_mass_lumped) {
// Array<Real> * Ma = new Array<Real>(*acceleration, true, "Ma");
// *Ma *= *mass_matrix;
// /// \todo check unit conversion for implicit dynamics
// // *Ma /= f_m2a
// *residual -= *Ma;
// delete Ma;
// } else if (mass) {
// // else lumped mass
// UInt nb_nodes = acceleration->getSize();
// UInt nb_degree_of_freedom = acceleration->getNbComponent();
// Real * mass_val = mass->storage();
// Real * accel_val = acceleration->storage();
// Real * res_val = residual->storage();
// bool * blocked_dofs_val = blocked_dofs->storage();
// for (UInt n = 0; n < nb_nodes * nb_degree_of_freedom; ++n) {
// if (!(*blocked_dofs_val)) {
// *res_val -= *accel_val * *mass_val / f_m2a;
// }
// blocked_dofs_val++;
// res_val++;
// mass_val++;
// accel_val++;
// }
// } else {
// AKANTU_DEBUG_ERROR("No function called to assemble the mass matrix.");
// }
// // f -= Cv
// if (velocity_damping_matrix) {
// Array<Real> * Cv = new Array<Real>(*velocity);
// *Cv *= *velocity_damping_matrix;
// *residual -= *Cv;
// delete Cv;
// }
// }
AKANTU_DEBUG_OUT();
}
/* -------------------------------------------------------------------------- */
__END_AKANTU__
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