GCMQ.h

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/*******************************************************************************
 * Copyright (C) 2017-2022 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 GCMQ_H
#define GCMQ_H
 
#include "SGCMQ.h"
 
class IntegrationPlan;
 
class GCMQ final : public SGCMQ {
    struct ResultantConverter final {
        enum class Edge {
            A,
            B,
            C,
            D
        };
 
        mat converter_a, converter_b;
        mat direction_cosine;
        ResultantConverter(Edge, double, const mat&, const IntegrationPlan&, const mat&);
        [[nodiscard]] double F(const vec&) const;
        [[nodiscard]] double V(const vec&) const;
        [[nodiscard]] double M(const vec&) const;
    };
 
    static constexpr int enhanced_mode = 2;
 
    vector<ResultantConverter> edge;
 
    const mat mat_stiffness, iso_mapping;
 
    mat HT, NT, MT, N, M; // constant matrices
 
    mat initial_viwt, trial_viwt, current_viwt;
    vec trial_vif, current_vif;
    vec trial_zeta, current_zeta;   // enhanced strain
    vec trial_beta, current_beta;   // strain
    vec trial_alpha, current_alpha; // stress
    vec trial_q, current_q;
 
    vec pre_disp;
 
    static mat form_transformation(const mat&);
    static mat form_enhanced_strain(const vec&, int);
 
public:
    using SGCMQ::SGCMQ;
 
    int initialize(const shared_ptr<DomainBase>&) override;
 
    int update_status() override;
 
    int commit_status() override;
    int clear_status() override;
    int reset_status() override;
 
    [[nodiscard]] mat compute_shape_function(const mat&, unsigned) const override;
 
    vector<vec> record(OutputType) override;
 
    void print() override;
 
#ifdef SUANPAN_VTK
    mat GetData(OutputType) override;
#endif
};
 
#endif