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epic.hh
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/*
* SPDX-License-Indentifier: AGPL-3.0-or-later
*
* Copyright (©) 2016-2024 EPFL (École Polytechnique Fédérale de Lausanne),
* Laboratory (LSMS - Laboratoire de Simulation en Mécanique des Solides)
* Copyright (©) 2020-2024 Lucas Frérot
*
* 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 EPIC_HH
#define EPIC_HH
/* -------------------------------------------------------------------------- */
#include "contact_solver.hh"
#include "ep_solver.hh"
#include "model.hh"
/* -------------------------------------------------------------------------- */
namespace tamaas {
/* -------------------------------------------------------------------------- */
class EPICSolver {
public:
/// Constructor
EPICSolver(ContactSolver& csolver, EPSolver& epsolver, Real tolerance = 1e-10,
Real relaxation = 0.3);
virtual Real solve(const std::vector<Real>& load);
Real acceleratedSolve(const std::vector<Real>& load);
Real computeError(const GridBase<Real>& current, const GridBase<Real>& prev,
Real factor) const;
void fixedPoint(GridBase<Real>& result, const GridBase<Real>& x,
const GridBase<Real>& initial_surface,
std::vector<Real> load);
template <model_type type>
void setViews();
TAMAAS_ACCESSOR(tolerance, Real, Tolerance);
TAMAAS_ACCESSOR(relaxation, Real, Relaxation);
TAMAAS_ACCESSOR(max_iterations, UInt, MaxIterations);
const Model& getModel() const { return csolver.getModel(); }
protected:
GridBase<Real> surface; ///< corrected surface
GridBase<Real> pressure; ///< current pressure
std::unique_ptr<GridBase<Real>> residual_disp; ///< plastic residual disp
std::unique_ptr<GridBase<Real>> pressure_inc; ///< pressure increment
ContactSolver& csolver;
EPSolver& epsolver;
Real tolerance, relaxation;
UInt max_iterations = 1000;
};
/* -------------------------------------------------------------------------- */
/* Template impl. */
/* -------------------------------------------------------------------------- */
template <model_type type>
void EPICSolver::setViews() {
constexpr UInt dim = model_type_traits<type>::dimension;
constexpr UInt bdim = model_type_traits<type>::boundary_dimension;
constexpr UInt comp = model_type_traits<type>::components;
pressure_inc =
std::unique_ptr<GridBase<Real>>{new GridView<Grid, Real, bdim, bdim>(
csolver.getModel().getTraction(), {}, comp - 1)};
residual_disp =
std::unique_ptr<GridBase<Real>>{new GridView<Grid, Real, dim, bdim>(
csolver.getModel().getDisplacement(),
model_type_traits<type>::indices, comp - 1)};
}
/* -------------------------------------------------------------------------- */
} // namespace tamaas
#endif // EPIC_HH

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