ExpOrthotropic.h

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/*******************************************************************************
 * Copyright (C) 2017-2025 Theodore Chang
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU 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 General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 ******************************************************************************/
#ifndef EXPORTHOTROPIC_H
#define EXPORTHOTROPIC_H
 
#include "NonlinearOrthotropic.h"
 
struct DataExpOrthotropic {
    const double a, b;
};
 
class ExpOrthotropic : protected DataExpOrthotropic, public NonlinearOrthotropic {
    [[nodiscard]] double compute_k(const double p_strain) const override { return 1. + a - a * exp(-b * p_strain); }
 
    [[nodiscard]] double compute_dk(const double p_strain) const override { return a * b * exp(-b * p_strain); }
 
public:
    ExpOrthotropic(const unsigned T, const OrthotropicType TP, vec&& E, vec&& V, vec&& S, const double A, const double B, const double R)
        : DataExpOrthotropic{A, B}
        , NonlinearOrthotropic(T, TP, std::move(E), std::move(V), std::move(S), R) {}
};
 
class ExpHoffman final : public ExpOrthotropic {
public:
    ExpHoffman(const unsigned T, vec&& E, vec&& V, vec&& S, const double A, const double B, const double R)
        : ExpOrthotropic(T, OrthotropicType::Hoffman, std::move(E), std::move(V), std::move(S), A, B, R) {}
 
    unique_ptr<Material> get_copy() override { return std::make_unique<ExpHoffman>(*this); }
};
 
class ExpTsaiWu final : public ExpOrthotropic {
public:
    ExpTsaiWu(const unsigned T, vec&& E, vec&& V, vec&& S, const double A, const double B, const double R)
        : ExpOrthotropic(T, OrthotropicType::TsaiWu, std::move(E), std::move(V), std::move(S), A, B, R) {}
 
    unique_ptr<Material> get_copy() override { return std::make_unique<ExpTsaiWu>(*this); }
};
 
#endif