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Sun, Aug 25, 16:19
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rAKA akantu
resolution.hh
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/**
* @file resolution.hh
*
* @author Mohit Pundir <mohit.pundir@epfl.ch>
*
* @date creation: Fri Jun 18 2010
* @date last modification: Wed Apr 07 2021
*
* @brief Mother class for all contact resolutions
*
*
* @section LICENSE
*
* Copyright (©) 2010-2021 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_factory.hh"
#include "contact_element.hh"
#include "fe_engine.hh"
#include "geometry_utils.hh"
#include "parsable.hh"
#include "parser.hh"
#include "resolution_utils.hh"
/* -------------------------------------------------------------------------- */
#ifndef __AKANTU_RESOLUTION_HH__
#define __AKANTU_RESOLUTION_HH__
/* -------------------------------------------------------------------------- */
namespace
akantu
{
class
Model
;
class
ContactMechanicsModel
;
}
// namespace akantu
namespace
akantu
{
/**
* Interface of all contact resolutions
* Prerequisites for a new resolution
* - inherit from this class
* - implement the following methods:
* \code
*
* virtual void computeNormalForce();
* virtual void computeTangentialForce();
* virtual void computeNormalModuli();
* virtual void computeTangentialModuli();
*
* \endcode
*
*/
class
Resolution
:
public
Parsable
{
/* ------------------------------------------------------------------------ */
/* Constructor/Destructor */
/* ------------------------------------------------------------------------ */
public
:
/// instantiate contact resolution with defaults
Resolution
(
ContactMechanicsModel
&
model
,
const
ID
&
id
=
""
);
/// Destructor
~
Resolution
()
override
;
protected
:
void
initialize
();
/// computes coordinates of a given element
void
computeCoordinates
(
const
Element
&
,
Matrix
<
Real
>
&
);
/* ------------------------------------------------------------------------ */
/* Functions that resolutions should reimplement for force */
/* ------------------------------------------------------------------------ */
public
:
/// computes the force vector due to normal traction
virtual
void
computeNormalForce
(
const
ContactElement
&
/*unused*/
,
Vector
<
Real
>
&
/*unused*/
)
{
AKANTU_TO_IMPLEMENT
();
}
/// computes the tangential force vector due to frictional traction
virtual
void
computeTangentialForce
(
const
ContactElement
&
/*unused*/
,
Vector
<
Real
>
&
/*unused*/
)
{
AKANTU_TO_IMPLEMENT
();
}
/* ------------------------------------------------------------------------ */
/* Functions that resolutions should reimplement for stiffness */
/* ------------------------------------------------------------------------ */
public
:
/// compute the normal moduli due to normal traction
virtual
void
computeNormalModuli
(
const
ContactElement
&
/*unused*/
,
Matrix
<
Real
>
&
/*unused*/
)
{
AKANTU_TO_IMPLEMENT
();
}
/// compute the tangent moduli due to tangential traction
virtual
void
computeTangentialModuli
(
const
ContactElement
&
/*unused*/
,
Matrix
<
Real
>
&
/*unused*/
)
{
AKANTU_TO_IMPLEMENT
();
}
/* ------------------------------------------------------------------------ */
/* Methods */
/* ------------------------------------------------------------------------ */
public
:
/// assemble the residual for this resolution
void
assembleInternalForces
(
GhostType
ghost_type
);
/// assemble the stiffness matrix for this resolution
void
assembleStiffnessMatrix
(
GhostType
ghost_type
);
private
:
/// assemble the residual for this resolution
void
assembleInternalForces
();
/// assemble the local array to global array for a contact element
void
assembleLocalToGlobalArray
(
const
ContactElement
&
/*element*/
,
Vector
<
Real
>
&
/*local*/
,
Array
<
Real
>
&
/*global*/
);
/// assemble the local stiffness to global stiffness for a contact element
void
assembleLocalToGlobalMatrix
(
const
ContactElement
&
/*element*/
,
const
Matrix
<
Real
>
&
/*local*/
,
SparseMatrix
&
/*global*/
);
public
:
virtual
void
beforeSolveStep
();
virtual
void
afterSolveStep
(
bool
converged
=
true
);
/* ------------------------------------------------------------------------ */
/* Accessors */
/* ------------------------------------------------------------------------ */
public
:
AKANTU_GET_MACRO
(
ID
,
id
,
const
ID
&
);
public
:
/// function to print the contain of the class
void
printself
(
std
::
ostream
&
stream
,
int
indent
=
0
)
const
override
;
/* ------------------------------------------------------------------------ */
/* Class Members */
/* ------------------------------------------------------------------------ */
protected
:
ID
id
;
/// friction coefficient : mu
Real
mu
;
/// spatial dimension
Int
spatial_dimension
;
/// is master surface deformable
bool
is_master_deformable
;
/// Link to the fe engine object in the model
FEEngine
&
fem
;
/// resolution name
std
::
string
name
;
/// model to which the resolution belong
ContactMechanicsModel
&
model
;
};
/// standard output stream operator
inline
std
::
ostream
&
operator
<<
(
std
::
ostream
&
stream
,
const
Resolution
&
_this
)
{
_this
.
printself
(
stream
);
return
stream
;
}
}
// namespace akantu
/* -------------------------------------------------------------------------- */
namespace
akantu
{
using
ResolutionFactory
=
Factory
<
Resolution
,
ID
,
UInt
,
const
ID
&
,
ContactMechanicsModel
&
,
const
ID
&>
;
/// macaulay bracket to convert positive gap to zero
template
<
typename
T
>
T
macaulay
(
T
var
)
{
return
var
<
0
?
0
:
var
;
}
template
<
typename
T
>
T
heaviside
(
T
var
)
{
return
var
<
0
?
0
:
1.0
;
}
}
// namespace akantu
#define INSTANTIATE_RESOLUTION_ONLY(res_name) class res_name
#define RESOLUTION_DEFAULT_PER_DIM_ALLOCATOR(id, res_name) \
[](Int dim, const ID &, ContactMechanicsModel & model, \
const ID & id) -> std::unique_ptr<Resolution> { \
switch (dim) { \
case 1: \
return std::make_unique<res_name>(model, id); \
case 2: \
return std::make_unique<res_name>(model, id); \
case 3: \
return std::make_unique<res_name>(model, id); \
default: \
AKANTU_EXCEPTION( \
"The dimension " \
<< dim << "is not a valid dimension for the contact resolution " \
<< #id); \
} \
}
#define INSTANTIATE_RESOLUTION(id, res_name) \
INSTANTIATE_RESOLUTION_ONLY(res_name); \
static bool resolution_is_alocated_##id [[gnu::unused]] = \
ResolutionFactory::getInstance().registerAllocator( \
#id, RESOLUTION_DEFAULT_PER_DIM_ALLOCATOR(id, res_name))
#endif
/* __AKANTU_RESOLUTION_HH__ */
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