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non_linear_solver_newton_raphson.hh
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/**
* @file non_linear_solver_newton_raphson.hh
*
* @author Nicolas Richart <nicolas.richart@epfl.ch>
*
* @date creation: Fri Jun 18 2010
* @date last modification: Wed Jan 31 2018
*
* @brief Default implementation of NonLinearSolver, in case no external
* library
* is there to do the job
*
* @section LICENSE
*
* Copyright (©) 2010-2018 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 "non_linear_solver.hh"
/* -------------------------------------------------------------------------- */
#ifndef __AKANTU_NON_LINEAR_SOLVER_NEWTON_RAPHSON_HH__
#define __AKANTU_NON_LINEAR_SOLVER_NEWTON_RAPHSON_HH__
namespace akantu {
class DOFManagerDefault;
class SparseSolverMumps;
class SolverVector;
} // namespace akantu
namespace akantu {
class NonLinearSolverNewtonRaphson : public NonLinearSolver {
/* ------------------------------------------------------------------------ */
/* Constructors/Destructors */
/* ------------------------------------------------------------------------ */
public:
NonLinearSolverNewtonRaphson(
DOFManagerDefault & dof_manager,
const NonLinearSolverType & non_linear_solver_type,
const ID & id = "non_linear_solver_newton_raphson", UInt memory_id = 0);
~NonLinearSolverNewtonRaphson() override;
/* ------------------------------------------------------------------------ */
/* Methods */
/* ------------------------------------------------------------------------ */
public:
/// Function that solve the non linear system described by the dof manager and
/// the solver callback functions
void solve(SolverCallback & solver_callback) override;
AKANTU_GET_MACRO_NOT_CONST(Solver, *solver, SparseSolverMumps &);
AKANTU_GET_MACRO(Solver, *solver, const SparseSolverMumps &);
protected:
/// test the convergence compare norm of array to convergence_criteria
bool testConvergence(const SolverVector & array);
/* ------------------------------------------------------------------------ */
/* Class Members */
/* ------------------------------------------------------------------------ */
private:
DOFManagerDefault & dof_manager;
/// Sparse solver used for the linear solves
std::unique_ptr<SparseSolverMumps> solver;
/// Type of convergence criteria
SolveConvergenceCriteria convergence_criteria_type;
/// convergence threshold
Real convergence_criteria;
/// convergence threshold
Real convergence_criteria_normalized;
/// Max number of iterations
int max_iterations;
/// Number of iterations at last solve call
int n_iter{0};
/// Convergence error at last solve call
Real error{0.};
/// Did the last call to solve reached convergence
bool converged{false};
/// Force a re-computation of the jacobian matrix
bool force_linear_recompute{true};
};
} // namespace akantu
#endif /* __AKANTU_NON_LINEAR_SOLVER_NEWTON_RAPHSON_HH__ */
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