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tamaas/src/bem/bem_fft_base.hh
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bem_fft_base.hh
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/**
* @file
* @section LICENSE
*
* Copyright (©) 2016-2020 EPFL (École Polytechnique Fédérale de Lausanne),
* Laboratory (LSMS - Laboratoire de Simulation en Mécanique des Solides)
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published
* by the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*
*/
/* -------------------------------------------------------------------------- */
#ifndef BEM_FFT_BASE_H
#define BEM_FFT_BASE_H
/* -------------------------------------------------------------------------- */
#include "bem_functional.hh"
#include "bem_interface.hh"
#include "bem_meta_functional.hh"
#include "surface_statistics.hh"
/* -------------------------------------------------------------------------- */
namespace tamaas {
class BemFFTBase : public BemInterface {
/* ------------------------------------------------------------------------ */
/* Constructors/Destructors */
/* ------------------------------------------------------------------------ */
public:
BemFFTBase(Surface<Real>& p);
/* ------------------------------------------------------------------------ */
/* Methods */
/* ------------------------------------------------------------------------ */
public:
//! compute the displacement from traction input
virtual void computeDisplacementsFromTractions();
//! compute the tractions from displacement input
virtual void computeTractionsFromDisplacements();
//! apply influence funtions
virtual void applyInfluenceFunctions(Surface<Real>& input,
Surface<Real>& output);
//! apply inverse influence funtions
virtual void applyInverseInfluenceFunctions(Surface<Real>& input,
Surface<Real>& output);
//! compute the influcence coefficients of pressure over displacement
virtual void computeSpectralInfluenceOverDisplacement();
//! compute the displacements
virtual void computeTrueDisplacements();
//! compute the gap
virtual void computeGaps();
//! get the number of iterations
virtual UInt getNbIterations() const = 0;
//! get the convergence steps of iterations
virtual const std::vector<Real>& getConvergenceIterations() const = 0;
/* ------------------------------------------------------------------------ */
/* Accessors */
/* ------------------------------------------------------------------------ */
public:
//! return the influcence coefficients
virtual const Surface<Real>& getSpectralInfluenceOverDisplacement();
//! return the actual tractions
virtual const Surface<Real>& getTractions() const;
//! return the actual displacements
virtual const Surface<Real>& getDisplacements() const;
//! get the computed true displacement
const Surface<Real>& getTrueDisplacements() { return true_displacements; };
//! get the computed gap
const Surface<Real>& getGap() { return gap; };
//! set the elastic effective modulus
void setEffectiveModulus(Real e_star);
//! set the elastic effective modulus
Real getEffectiveModulus();
//! set the maximal number of iterations
void setMaxIterations(UInt max_iter) { this->max_iterations = max_iter; };
//! get the maximal number of iterations
UInt getMaxIterations() { return this->max_iterations; };
//! set dump freq
void setDumpFreq(UInt dump_freq) { this->dump_freq = dump_freq; };
//! get dump freq
UInt getDumpFreq() { return this->dump_freq; };
//! set functional
void addFunctional(::tamaas::Functional* new_funct);
/* ------------------------------------------------------------------------ */
/* Class Members */
/* ------------------------------------------------------------------------ */
protected:
//! Functional for optimization
MetaFunctional* functional;
//! surface tractions
Surface<Real> surface_tractions;
//! surface displacement
Surface<Real> surface_displacements;
//! surface input in spectral
SurfaceComplex<Real> surface_spectral_input;
//! surface output in spectral
SurfaceComplex<Real> surface_spectral_output;
//! surface influence coefficient over displacement
Surface<Real> surface_spectral_influence_disp;
//! shifted displacement in order to get the true displacement
Surface<Real> true_displacements;
//! old displacements (for stopping criterion)
Surface<Real> old_displacements;
//! computing of the gap
Surface<Real> gap;
//! Effective young modulus
Real e_star;
//! maximum of iterations
UInt max_iterations;
//! number of iterations
UInt nb_iterations;
//! number of iterations
std::vector<Real> convergence_iterations;
//! frequency at which to dump iteration info
UInt dump_freq;
/* ------------------------------------------------------------------------ */
/* temporary trick about some obscure scaling factor */
/* ------------------------------------------------------------------------ */
/*
0 2 = 2*1
1 4 = 2*2
2 10 = 2*5
3 20 = 2*10
4 34 = 2*12
*/
//#define tmp_coeff (2.*n/M_PI)
//#define tmp_coeff (n/M_PI)
const Real tmp_coeff;
};
} // namespace tamaas
#endif /* BEM_FFT_BASE_H */
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