Degradation.h

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/*******************************************************************************
 * Copyright (C) 2017-2026 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 DEGRADATION_H
#define DEGRADATION_H
 
#include <Material/Material1D/Material1D.h>
#include <Toolbox/ResourceHolder.h>
 
class Degradation : public Material1D {
    const unsigned mat_tag;
 
protected:
    ResourceHolder<Material> base;
 
    [[nodiscard]] virtual vec compute_positive_degradation(double) const = 0; // positive region
    [[nodiscard]] virtual vec compute_negative_degradation(double) const = 0; // negative region
 
public:
    Degradation(
        unsigned, // tag
        unsigned  // material tag
    );
 
    int initialize(const shared_ptr<DomainBase>&) override;
 
    int clear_status() override;
    int commit_status() override;
    int reset_status() override;
};
 
class StrainDegradation : public Degradation {
public:
    using Degradation::Degradation;
 
    int initialize(const shared_ptr<DomainBase>&) override;
 
    int update_trial_status(const vec&) override;
 
    [[nodiscard]] std::vector<vec> record(OutputType) const override;
};
 
class StressDegradation : public Degradation {
public:
    using Degradation::Degradation;
 
    int initialize(const shared_ptr<DomainBase>&) override;
 
    int update_trial_status(const vec&) override;
 
    [[nodiscard]] std::vector<vec> record(OutputType) const override;
};
 
#endif