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tamaas/src/bem/bem_grid_kato.hh
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bem_grid_kato.hh
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/**
*
* @author Lucas Frérot <lucas.frerot@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_GRID_KATO_HH__
#define __BEM_GRID_KATO_HH__
/* -------------------------------------------------------------------------- */
#include "bem_grid.hh"
/* -------------------------------------------------------------------------- */
namespace tamaas {
/**
* @brief multi component implementation of Kato algorithm
* This method's main unknown is the pressure.
* Boundary condition is applied mean gap.
*/
class BemGridKato : public BemGrid {
public:
/// Constructor
BemGridKato(Surface<Real>& surface);
/// Destructor
virtual ~BemGridKato();
public:
/* ------------------------------------------------------------------------ */
/* Actual computations */
/* ------------------------------------------------------------------------ */
/// Compute true tractions
virtual void computeTrueTractions();
/// Compute true displacements
virtual void computeTrueDisplacements();
/// Compute stopping criterion
Real computeStoppingCriterion();
/// Compute lambda (Lagrange mult. for p_N >= 0)
Real computeLambda();
/// Compute potential energy
Real computeFunctional();
/// Update gradient with a vector
virtual void updateGradient(Grid<Real, 1>& q);
/// Compute equilibrium
virtual void computeEquilibrium(Real tol, const Grid<Real, 1>& g_target);
/* ------------------------------------------------------------------------ */
/* Others */
/* ------------------------------------------------------------------------ */
/// Print
void printFriendlyMessage(UInt niter, Real conv_crit);
/// Get Lambda
const Surface<Real>& getLambda() const { return lambda; }
protected:
Surface<Real> lambda;
Real beta;
};
} // namespace tamaas
#endif // __BEM_GRID_KATO_HH__
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