NonlinearMises1D.h

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/*******************************************************************************
 * Copyright (C) 2017-2024 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.
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 * You should have received a copy of the GNU General Public License
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#ifndef NONLINEARMISES1D_H
#define NONLINEARMISES1D_H
 
#include <Material/Material1D/Material1D.h>
 
struct DataMises1D {
    const double elastic_modulus; // elastic modulus
};
 
class NonlinearMises1D : protected DataMises1D, public Material1D {
    static constexpr unsigned max_iteration = 20u;
 
    [[nodiscard]] virtual double compute_k(double) const = 0;
    [[nodiscard]] virtual double compute_dk(double) const = 0;
    [[nodiscard]] virtual double compute_h(double) const = 0;
    [[nodiscard]] virtual double compute_dh(double) const = 0;
 
public:
    NonlinearMises1D(
        unsigned,   // tag
        double,     // elastic modulus
        double = 0. // density
    );
 
    int initialize(const shared_ptr<DomainBase>&) override;
 
    int update_trial_status(const vec&) override;
 
    int clear_status() override;
    int commit_status() override;
    int reset_status() override;
};
 
#endif