WilsonPenzienNewmark.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.
 *
 * 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 WILSONPENZIENNEWMARK_H
#define WILSONPENZIENNEWMARK_H
 
#include <Solver/Integrator/Newmark.h>
 
class WilsonPenzienNewmark final : public Newmark {
    bool first_iteration = true;
 
    const vec damping_ratio;
 
    mat theta;
    vec beta;
 
public:
    explicit WilsonPenzienNewmark(unsigned, vec&&, double = .25, double = .5);
 
    int initialize() override;
 
    [[nodiscard]] int process_constraint() override;
 
    int solve(mat&, const mat&) override;
    int solve(mat&, const sp_mat&) override;
    int solve(mat&, mat&&) override;
    int solve(mat&, sp_mat&&) override;
 
    void commit_status() override;
    void clear_status() override;
    void reset_status() override;
 
    void assemble_resistance() override;
    void assemble_matrix() override;
 
    void print() override;
};
 
#endif