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resolution_penalty.hh
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rAKA akantu
resolution_penalty.hh
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/**
* @file resolution_penalty.hh
*
* @author Mohit Pundir <mohit.pundir@epfl.ch>
*
* @date creation: Fri Jun 18 2010
* @date last modification: Wed Jun 09 2021
*
* @brief Linear Penalty Resolution for Contact Mechanics Model
*
*
* @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_common.hh"
#include "resolution.hh"
/* -------------------------------------------------------------------------- */
#ifndef __AKANTU_RESOLUTION_PENALTY_HH__
#define __AKANTU_RESOLUTION_PENALTY_HH__
namespace
akantu
{
class
ResolutionPenalty
:
public
Resolution
{
/* ------------------------------------------------------------------------ */
/* Constructors/Destructors */
/* ------------------------------------------------------------------------ */
public
:
ResolutionPenalty
(
ContactMechanicsModel
&
model
,
const
ID
&
id
=
""
);
~
ResolutionPenalty
()
override
=
default
;
/* ------------------------------------------------------------------------ */
/* Methods */
/* ------------------------------------------------------------------------ */
protected
:
/// initialize the resolution
void
initialize
();
/* ------------------------------------------------------------------------ */
/* Methods for stiffness computation */
/* ------------------------------------------------------------------------ */
protected
:
/// local computaion of stiffness matrix due to stick state
void
computeStickModuli
(
const
ContactElement
&
/*element*/
,
Matrix
<
Real
>
&
/*stiffness*/
);
/// local computation of stiffness matrix due to slip state
void
computeSlipModuli
(
const
ContactElement
&
/*element*/
,
Matrix
<
Real
>
&
/*stiffness*/
);
public
:
/// local computation of tangent moduli due to normal traction
void
computeNormalModuli
(
const
ContactElement
&
/*element*/
,
Matrix
<
Real
>
&
/*stiffness*/
)
override
;
/// local computation of tangent moduli due to tangential traction
void
computeTangentialModuli
(
const
ContactElement
&
/*element*/
,
Matrix
<
Real
>
&
/*stiffness*/
)
override
;
/* ------------------------------------------------------------------------ */
/* Methods for force computation */
/* ------------------------------------------------------------------------ */
public
:
/// local computation of normal force due to normal contact
void
computeNormalForce
(
const
ContactElement
&
/*element*/
,
Vector
<
Real
>
&
/*force*/
)
override
;
/// local computation of tangential force due to frictional traction
void
computeTangentialForce
(
const
ContactElement
&
/*element*/
,
Vector
<
Real
>
&
/*force*/
)
override
;
protected
:
/// local computation of normal traction due to penetration
Real
computeNormalTraction
(
Real
&
/*gap*/
)
const
;
/// local computation of trial tangential traction due to friction
void
computeTrialTangentialTraction
(
const
ContactElement
&
/*element*/
,
const
Matrix
<
Real
>
&
/*covariant_basis*/
,
Vector
<
Real
>
&
/*traction*/
);
/// local computation of tangential traction due to stick
void
computeStickTangentialTraction
(
const
ContactElement
&
/*unused*/
,
Vector
<
Real
>
&
/*traction_trial*/
,
Vector
<
Real
>
&
/*traction_tangential*/
);
/// local computation of tangential traction due to slip
void
computeSlipTangentialTraction
(
const
ContactElement
&
/*element*/
,
const
Matrix
<
Real
>
&
/*covariant_basis*/
,
Vector
<
Real
>
&
/*traction_trial*/
,
Vector
<
Real
>
&
/*traction_tangential*/
);
/// local computation of tangential traction due to friction
void
computeTangentialTraction
(
const
ContactElement
&
/*element*/
,
const
Matrix
<
Real
>
&
/*covariant_basis*/
,
Vector
<
Real
>
&
/*traction_tangential*/
);
public
:
void
beforeSolveStep
()
override
;
void
afterSolveStep
(
bool
converged
=
true
)
override
;
/* ------------------------------------------------------------------------ */
/* Class Members */
/* ------------------------------------------------------------------------ */
protected
:
/// penalty parameter for normal traction
Real
epsilon_n
;
/// penalty parameter for tangential traction
Real
epsilon_t
;
};
}
// namespace akantu
#endif
/* __AKANTU_RESOLUTION_PENALTY_HH__ */
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