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rAKA akantu
structural_mechanics_model.hh
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/**
* @file structural_mechanics_model.hh
*
* @author Fabian Barras <fabian.barras@epfl.ch>
* @author Sébastien Hartmann <sebastien.hartmann@epfl.ch>
* @author Nicolas Richart <nicolas.richart@epfl.ch>
* @author Damien Spielmann <damien.spielmann@epfl.ch>
*
* @date creation: Fri Jul 15 2011
* @date last modification: Thu Jan 21 2016
*
* @brief Particular implementation of the structural elements in the
* StructuralMechanicsModel
*
* @section LICENSE
*
* Copyright (©) 2010-2012, 2014, 2015 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 "aka_named_argument.hh"
#include "boundary_condition.hh"
#include "model.hh"
/* -------------------------------------------------------------------------- */
#ifndef __AKANTU_STRUCTURAL_MECHANICS_MODEL_HH__
#define __AKANTU_STRUCTURAL_MECHANICS_MODEL_HH__
/* -------------------------------------------------------------------------- */
namespace
akantu
{
class
Material
;
class
MaterialSelector
;
class
DumperIOHelper
;
class
NonLocalManager
;
template
<
ElementKind
kind
,
class
IntegrationOrderFunctor
>
class
IntegratorGauss
;
template
<
ElementKind
kind
>
class
ShapeStructural
;
}
// namespace akantu
namespace
akantu
{
struct
StructuralMaterial
{
Real
E
{
0
};
Real
A
{
1
};
Real
I
{
0
};
Real
Iz
{
0
};
Real
Iy
{
0
};
Real
GJ
{
0
};
Real
rho
{
0
};
Real
t
{
0
};
Real
nu
{
0
};
};
class
StructuralMechanicsModel
:
public
Model
{
/* ------------------------------------------------------------------------ */
/* Constructors/Destructors */
/* ------------------------------------------------------------------------ */
public
:
using
MyFEEngineType
=
FEEngineTemplate
<
IntegratorGauss
,
ShapeStructural
,
_ek_structural
>
;
StructuralMechanicsModel
(
Mesh
&
mesh
,
UInt
spatial_dimension
=
_all_dimensions
,
const
ID
&
id
=
"structural_mechanics_model"
,
const
MemoryID
&
memory_id
=
0
);
virtual
~
StructuralMechanicsModel
();
/// Init full model
void
initFullImpl
(
const
ModelOptions
&
options
)
override
;
/// Init boundary FEEngine
void
initFEEngineBoundary
()
override
;
/* ------------------------------------------------------------------------ */
/* Virtual methods from SolverCallback */
/* ------------------------------------------------------------------------ */
/// get the type of matrix needed
MatrixType
getMatrixType
(
const
ID
&
)
override
;
/// callback to assemble a Matrix
void
assembleMatrix
(
const
ID
&
)
override
;
/// callback to assemble a lumped Matrix
void
assembleLumpedMatrix
(
const
ID
&
)
override
;
/// callback to assemble the residual (rhs)
void
assembleResidual
()
override
;
/* ------------------------------------------------------------------------ */
/* Virtual methods from MeshEventHandler */
/* ------------------------------------------------------------------------ */
/// function to implement to react on akantu::NewNodesEvent
void
onNodesAdded
(
const
Array
<
UInt
>
&
nodes_list
,
const
NewNodesEvent
&
event
)
override
;
/// function to implement to react on akantu::RemovedNodesEvent
void
onNodesRemoved
(
const
Array
<
UInt
>
&
nodes_list
,
const
Array
<
UInt
>
&
new_numbering
,
const
RemovedNodesEvent
&
event
)
override
;
/// function to implement to react on akantu::NewElementsEvent
void
onElementsAdded
(
const
Array
<
Element
>
&
elements_list
,
const
NewElementsEvent
&
event
)
override
;
/// function to implement to react on akantu::RemovedElementsEvent
void
onElementsRemoved
(
const
Array
<
Element
>
&
elements_list
,
const
ElementTypeMapArray
<
UInt
>
&
new_numbering
,
const
RemovedElementsEvent
&
event
)
override
;
/// function to implement to react on akantu::ChangedElementsEvent
void
onElementsChanged
(
const
Array
<
Element
>
&
old_elements_list
,
const
Array
<
Element
>
&
new_elements_list
,
const
ElementTypeMapArray
<
UInt
>
&
new_numbering
,
const
ChangedElementsEvent
&
event
)
override
;
/* ------------------------------------------------------------------------ */
/* Virtual methods from Model */
/* ------------------------------------------------------------------------ */
protected
:
/// get some default values for derived classes
std
::
tuple
<
ID
,
TimeStepSolverType
>
getDefaultSolverID
(
const
AnalysisMethod
&
method
)
override
;
ModelSolverOptions
getDefaultSolverOptions
(
const
TimeStepSolverType
&
type
)
const
override
;
UInt
getNbDegreeOfFreedom
(
const
ElementType
&
type
)
const
;
/* ------------------------------------------------------------------------ */
/* Methods */
/* ------------------------------------------------------------------------ */
void
initSolver
(
TimeStepSolverType
,
NonLinearSolverType
)
override
;
/// initialize the model
void
initModel
()
override
;
/// compute the stresses per elements
void
computeStresses
();
/// compute the nodal forces
void
assembleInternalForce
();
/// compute the nodal forces for an element type
void
assembleInternalForce
(
const
ElementType
&
type
,
GhostType
gt
);
/// assemble the stiffness matrix
void
assembleStiffnessMatrix
();
/// assemble the mass matrix for consistent mass resolutions
void
assembleMass
();
/// TODO remove
void
computeRotationMatrix
(
const
ElementType
&
type
);
protected
:
/// compute Rotation Matrices
template
<
const
ElementType
type
>
void
computeRotationMatrix
(
__attribute__
((
unused
))
Array
<
Real
>
&
rotations
)
{}
/* ------------------------------------------------------------------------ */
/* Mass (structural_mechanics_model_mass.cc) */
/* ------------------------------------------------------------------------ */
/// assemble the mass matrix for either _ghost or _not_ghost elements
void
assembleMass
(
GhostType
ghost_type
);
/// computes rho
void
computeRho
(
Array
<
Real
>
&
rho
,
ElementType
type
,
GhostType
ghost_type
);
/// finish the computation of residual to solve in increment
void
updateResidualInternal
();
/* ------------------------------------------------------------------------ */
private
:
template
<
ElementType
type
>
void
assembleStiffnessMatrix
();
template
<
ElementType
type
>
void
assembleMass
();
template
<
ElementType
type
>
void
computeStressOnQuad
();
template
<
ElementType
type
>
void
computeTangentModuli
(
Array
<
Real
>
&
tangent_moduli
);
/* ------------------------------------------------------------------------ */
/* Dumpable interface */
/* ------------------------------------------------------------------------ */
public
:
virtual
dumper
::
Field
*
createNodalFieldReal
(
const
std
::
string
&
field_name
,
const
std
::
string
&
group_name
,
bool
padding_flag
);
virtual
dumper
::
Field
*
createNodalFieldBool
(
const
std
::
string
&
field_name
,
const
std
::
string
&
group_name
,
bool
padding_flag
);
virtual
dumper
::
Field
*
createElementalField
(
const
std
::
string
&
field_name
,
const
std
::
string
&
group_name
,
bool
padding_flag
,
const
ElementKind
&
kind
,
const
std
::
string
&
fe_engine_id
=
""
);
/* ------------------------------------------------------------------------ */
/* Accessors */
/* ------------------------------------------------------------------------ */
public
:
/// set the value of the time step
// void setTimeStep(Real time_step, const ID & solver_id = "") override;
/// return the dimension of the system space
AKANTU_GET_MACRO
(
SpatialDimension
,
spatial_dimension
,
UInt
);
/// get the StructuralMechanicsModel::displacement vector
AKANTU_GET_MACRO
(
Displacement
,
*
displacement_rotation
,
Array
<
Real
>
&
);
/// get the StructuralMechanicsModel::velocity vector
AKANTU_GET_MACRO
(
Velocity
,
*
velocity
,
Array
<
Real
>
&
);
/// get the StructuralMechanicsModel::acceleration vector, updated
/// by
/// StructuralMechanicsModel::updateAcceleration
AKANTU_GET_MACRO
(
Acceleration
,
*
acceleration
,
Array
<
Real
>
&
);
/// get the StructuralMechanicsModel::external_force vector
AKANTU_GET_MACRO
(
ExternalForce
,
*
external_force
,
Array
<
Real
>
&
);
/// get the StructuralMechanicsModel::internal_force vector (boundary forces)
AKANTU_GET_MACRO
(
InternalForce
,
*
internal_force
,
Array
<
Real
>
&
);
/// get the StructuralMechanicsModel::boundary vector
AKANTU_GET_MACRO
(
BlockedDOFs
,
*
blocked_dofs
,
Array
<
bool
>
&
);
AKANTU_GET_MACRO_BY_ELEMENT_TYPE_CONST
(
RotationMatrix
,
rotation_matrix
,
Real
);
AKANTU_GET_MACRO_BY_ELEMENT_TYPE_CONST
(
Stress
,
stress
,
Real
);
AKANTU_GET_MACRO_BY_ELEMENT_TYPE
(
ElementMaterial
,
element_material
,
UInt
);
AKANTU_GET_MACRO_BY_ELEMENT_TYPE
(
Set_ID
,
set_ID
,
UInt
);
void
addMaterial
(
StructuralMaterial
&
material
)
{
materials
.
push_back
(
material
);
}
const
StructuralMaterial
&
getMaterial
(
const
Element
&
element
)
const
{
return
materials
[
element_material
(
element
)];
}
/* ------------------------------------------------------------------------ */
/* Boundaries (structural_mechanics_model_boundary.cc) */
/* ------------------------------------------------------------------------ */
public
:
/// Compute Linear load function set in global axis
template
<
ElementType
type
>
void
computeForcesByGlobalTractionArray
(
const
Array
<
Real
>
&
tractions
);
/// Compute Linear load function set in local axis
template
<
ElementType
type
>
void
computeForcesByLocalTractionArray
(
const
Array
<
Real
>
&
tractions
);
/// compute force vector from a function(x,y,momentum) that describe stresses
// template <ElementType type>
// void computeForcesFromFunction(BoundaryFunction in_function,
// BoundaryFunctionType function_type);
/* ------------------------------------------------------------------------ */
/* Class Members */
/* ------------------------------------------------------------------------ */
private
:
/// time step
Real
time_step
;
/// conversion coefficient form force/mass to acceleration
Real
f_m2a
;
/// displacements array
Array
<
Real
>
*
displacement_rotation
{
nullptr
};
/// velocities array
Array
<
Real
>
*
velocity
{
nullptr
};
/// accelerations array
Array
<
Real
>
*
acceleration
{
nullptr
};
/// forces array
Array
<
Real
>
*
internal_force
{
nullptr
};
/// forces array
Array
<
Real
>
*
external_force
{
nullptr
};
/// lumped mass array
Array
<
Real
>
*
mass
{
nullptr
};
/// boundaries array
Array
<
bool
>
*
blocked_dofs
{
nullptr
};
/// stress array
ElementTypeMapArray
<
Real
>
stress
;
ElementTypeMapArray
<
UInt
>
element_material
;
// Define sets of beams
ElementTypeMapArray
<
UInt
>
set_ID
;
/// number of degre of freedom
UInt
nb_degree_of_freedom
;
// Rotation matrix
ElementTypeMapArray
<
Real
>
rotation_matrix
;
// /// analysis method check the list in akantu::AnalysisMethod
// AnalysisMethod method;
/// flag defining if the increment must be computed or not
bool
increment_flag
;
/* ------------------------------------------------------------------------ */
std
::
vector
<
StructuralMaterial
>
materials
;
};
}
// namespace akantu
#endif
/* __AKANTU_STRUCTURAL_MECHANICS_MODEL_HH__ */
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