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ep_solver.hh
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Wed, May 1, 07:55

ep_solver.hh
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/**
* @file
* LICENSE
*
* Copyright (©) 2016-2021 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 EP_SOLVER_HH
#define EP_SOLVER_HH
/* -------------------------------------------------------------------------- */
#include "grid_base.hh"
#include "residual.hh"
/* -------------------------------------------------------------------------- */
namespace tamaas {
/* -------------------------------------------------------------------------- */
struct ToleranceManager {
Real start_tol, end_tol, rate, tolerance;
ToleranceManager(Real start, Real end, Real rate)
: start_tol(start / rate), end_tol(end), rate(rate),
tolerance(start_tol) {}
void step() { tolerance = std::max(end_tol, rate * tolerance); }
void reset() { tolerance = start_tol; }
};
class EPSolver {
public:
/// Constructor
EPSolver(Residual& residual);
/// Destructor
virtual ~EPSolver() = default;
// Main methods
public:
virtual void solve() = 0;
virtual void updateState();
virtual void beforeSolve();
// Accessors
public:
GridBase<Real>& getStrainIncrement() { return *_x; }
Residual& getResidual() { return _residual; }
Real getTolerance() const { return abs_tol.tolerance; }
void setTolerance(Real tol) { abs_tol = ToleranceManager{tol, tol, 1}; }
void setToleranceManager(ToleranceManager manager) { abs_tol = manager; }
protected:
std::shared_ptr<GridBase<Real>> _x;
Residual& _residual;
ToleranceManager abs_tol{1e-9, 1e-9, 1};
};
/* -------------------------------------------------------------------------- */
} // namespace tamaas
#endif

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