LeeNewmarkBase.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 LEENEWMARKBASE_H
#define LEENEWMARKBASE_H
 
#include <Domain/Factory.hpp>
#include <Domain/MetaMat/MetaMat.hpp>
#include <Solver/Integrator/Newmark.h>
 
class LeeNewmarkBase : public Newmark {
public:
    enum class StiffnessType : std::uint8_t {
        INITIAL,
        CURRENT,
        TRIAL
    };
 
protected:
    const uword n_block;
 
    const StiffnessType stiffness_type;
 
    bool first_iteration = true;
 
    vec current_internal, trial_internal;
 
    mutable vec residual;
 
    unique_ptr<MetaMat<double>> stiffness = nullptr;
 
    shared_ptr<Factory<double>> factory = nullptr;
 
    [[nodiscard]] virtual uword get_total_size() const = 0;
 
    virtual void update_stiffness() const = 0;
    virtual void update_residual() const = 0;
 
    int erase_top_left_block() const;
 
public:
    explicit LeeNewmarkBase(unsigned, double, double, StiffnessType = StiffnessType::CURRENT);
 
    int initialize() override;
 
    int update_internal(const mat&) final;
 
    int solve(mat&, const mat&) final;
    int solve(mat&, const sp_mat&) final;
    int solve(mat&, mat&&) final;
    int solve(mat&, sp_mat&&) final;
 
    vec get_force_residual() final;
    vec get_displacement_residual() final;
 
    void commit_status() final;
    void clear_status() final;
    void reset_status() final;
};
 
#endif