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tamaas/src/bem_gigi.hh
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bem_gigi.hh
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/**
*
* @author Valentine Rey <valentine.rey@epfl.ch>
*
* @section LICENSE
*
* Copyright (©) 2016 EPFL (Ecole Polytechnique Fédérale de
* Lausanne) Laboratory (LSMS - Laboratoire de Simulation en Mécanique des
* Solides)
*
* Tamaas 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.
*
* Tamaas 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 Tamaas. If not, see <http://www.gnu.org/licenses/>.
*
*/
/* -------------------------------------------------------------------------- */
#ifndef BEM_GIGI_H
#define BEM_GIGI_H
/* -------------------------------------------------------------------------- */
#include "bem_fft_base.hh"
/* -------------------------------------------------------------------------- */
class BemGigi : public BemFFTBase {
/* ------------------------------------------------------------------------ */
/* Constructors/Destructors */
/* ------------------------------------------------------------------------ */
public:
BemGigi(Surface<Real> & p) :
BemFFTBase(p),
surface_t(p.size(),p.getL()),
surface_r(p.size(),p.getL()),
surface_spectral_r(p.size(),p.getL()),
surface_w(p.size(),p.getL()),
surface_q(p.size(),p.getL()),
surface_spectral_q(p.size(),p.getL()),
pold(p.size(),p.getL()){
e_star = 1.;
max_iterations = 10000;
};
virtual ~BemGigi(){};
/* ------------------------------------------------------------------------ */
/* Methods */
/* ------------------------------------------------------------------------ */
public:
Real computeEquilibrium(Real epsilon,Real pressure,
int nthreads = 1);
// compute the non zero gap penalty functional
Real computeR();
Real computeG();
// compute the conjugate step size
Real computeAlpha();
Real computeTau();
// compute the overlapp space
Real computeIol();
void emptyOverlap();
// update the search direction
void updateW(Real R, Real Rold);
void updateT(Real G, Real Gold);
// update the tractions
void updateDisplacements(Real alpha);
void updateDisplacementsB(Real tau);
void truncatePressure();
// enforce the applied and contact pressures balance
void enforcePressureBalance(Real applied_pressure);
Real computeMeanGapsInContact();
// Compute pressures from displacements
void computePressures(Real applied_pressure);
virtual void computeGaps();
/* ------------------------------------------------------------------------ */
/* Accessors */
/* ------------------------------------------------------------------------ */
public:
//! get the number of iterations
UInt getNbIterations() const{return this->nb_iterations;};
//! get the convergence steps of iterations
const std::vector<Real> & getConvergenceIterations() const{return this->convergence_iterations;};
Surface<Real> & getSurfaceT(){return surface_t;};
/* ------------------------------------------------------------------------ */
/* Class Members */
/* ------------------------------------------------------------------------ */
protected:
//! exploration direction for the Gigi algo
Surface<Real> surface_t;
//! projected exploration direction for the Gigi algo
Surface<Real> surface_r;
//! projected exploration direction for the Gigi algo (fourier version)
SurfaceComplex<Real> surface_spectral_r;
//! exploration direction for the Gigi algo
Surface<Real> surface_w;
//! projected exploration direction for the Gigi algo
Surface<Real> surface_q;
//! projected exploration direction for the Gigi algo (fourier version)
SurfaceComplex<Real> surface_spectral_q;
//! previous pressure
Surface<Real> pold;
};
#endif /* BEM_GIGI_H */
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