Page Menu
Home
c4science
Search
Configure Global Search
Log In
Files
F68569658
time_step_solver_default.cc
No One
Temporary
Actions
Download File
Edit File
Delete File
View Transforms
Subscribe
Mute Notifications
Award Token
Subscribers
None
File Metadata
Details
File Info
Storage
Attached
Created
Fri, Jun 28, 00:19
Size
6 KB
Mime Type
text/x-c
Expires
Sun, Jun 30, 00:19 (1 d, 23 h)
Engine
blob
Format
Raw Data
Handle
18603102
Attached To
rAKA akantu
time_step_solver_default.cc
View Options
/**
* @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__
Event Timeline
Log In to Comment