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rMUSPECTRE µSpectre
projection_small_strain.hh
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/**
* @file projection_small_strain.cc
*
* @author Till Junge <till.junge@altermail.ch>
*
* @date 14 Jan 2018
*
* @brief Small strain projection operator as defined in Appendix A1 of
* DOI: 10.1002/nme.5481 ("A finite element perspective on nonlinear
* FFT-based micromechanical simulations", Int. J. Numer. Meth. Engng
* 2017; 111 :903–926)
*
* Copyright © 2018 Till Junge
*
* µSpectre is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License as
* published by the Free Software Foundation, either version 3, or (at
* your option) any later version.
*
* µSpectre 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
* General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with GNU Emacs; see the file COPYING. If not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#ifndef PROJECTION_SMALL_STRAIN_H
#define PROJECTION_SMALL_STRAIN_H
#include "fft/projection_default.hh"
namespace
muSpectre
{
/**
* Implements the small strain projection operator as defined in
* Appendix A1 of DOI: 10.1002/nme.5481 ("A finite element
* perspective on nonlinear FFT-based micromechanical
* simulations", Int. J. Numer. Meth. Engng 2017; 111
* :903–926)
*/
template
<
Dim_t
DimS
,
Dim_t
DimM
>
class
ProjectionSmallStrain
:
public
ProjectionDefault
<
DimS
,
DimM
>
{
public
:
using
Parent
=
ProjectionDefault
<
DimS
,
DimM
>
;
//!< base class
//! polymorphic pointer to FFT engines
using
FFT_Engine_ptr
=
typename
Parent
::
FFT_Engine_ptr
;
using
Ccoord
=
typename
Parent
::
Ccoord
;
//!< cell coordinates type
//! local field collection (for Fourier-space representations)
using
LFieldCollection_t
=
FieldCollection
<
DimS
,
DimM
,
false
>
;
//! Fourier-space field containing the projection operator itself
using
Proj_t
=
TensorField
<
LFieldCollection_t
,
Real
,
fourthOrder
,
DimM
>
;
//! iterable operator
using
Proj_map
=
T4MatrixFieldMap
<
LFieldCollection_t
,
Real
,
DimM
>
;
//! iterable vectorised version of the Fourier-space tensor field
using
Vector_map
=
MatrixFieldMap
<
LFieldCollection_t
,
Complex
,
DimM
*
DimM
,
1
>
;
//! Default constructor
ProjectionSmallStrain
()
=
delete
;
//! Constructor with fft_engine
ProjectionSmallStrain
(
FFT_Engine_ptr
engine
);
//! Copy constructor
ProjectionSmallStrain
(
const
ProjectionSmallStrain
&
other
)
=
delete
;
//! Move constructor
ProjectionSmallStrain
(
ProjectionSmallStrain
&&
other
)
=
default
;
//! Destructor
virtual
~
ProjectionSmallStrain
()
=
default
;
//! Copy assignment operator
ProjectionSmallStrain
&
operator
=
(
const
ProjectionSmallStrain
&
other
)
=
delete
;
//! Move assignment operator
ProjectionSmallStrain
&
operator
=
(
ProjectionSmallStrain
&&
other
)
=
delete
;
//! initialises the fft engine (plan the transform)
virtual
void
initialise
(
FFT_PlanFlags
flags
=
FFT_PlanFlags
::
estimate
)
override
final
;
protected
:
private
:
};
}
// muSpectre
#endif
/* PROJECTION_SMALL_STRAIN_H */
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