complex_solid.h

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/* -------------------------------------------------------------------------*
 *                              SPHinXsys                                   *
 * --------------------------------------------------------------------------*
 * SPHinXsys (pronunciation: s'finksis) is an acronym from Smoothed Particle    *
 * Hydrodynamics for industrial compleX systems. It provides C++ APIs for   *
 * physical accurate simulation and aims to model coupled industrial dynamic *
 * systems including fluid, solid, multi-body dynamics and beyond with SPH  *
 * (smoothed particle hydrodynamics), a meshless computational method using *
 * particle discretization.                                                 *
 *                                                                          *
 * SPHinXsys is partially funded by German Research Foundation              *
 * (Deutsche Forschungsgemeinschaft) DFG HU1527/6-1, HU1527/10-1                *
 * and HU1527/12-1.                                                         *
 *                                                                           *
 * Portions copyright (c) 2017-2020 Technical University of Munich and      *
 * the authors' affiliations.                                               *
 *                                                                           *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may   *
 * not use this file except in compliance with the License. You may obtain a *
 * copy of the License at http://www.apache.org/licenses/LICENSE-2.0.        *
 *                                                                           *
 * --------------------------------------------------------------------------*/
#pragma once

#include "elastic_solid.h"

namespace SPH
{
    template <class MuscleType>
    class ActiveMuscle : public MuscleType
    {
    protected:
        StdLargeVec<Real> active_contraction_stress_; 
        void initializeContractionStress();

    public:
        template <typename... ConstructorArgs>
        explicit ActiveMuscle(ConstructorArgs &&...args);
        virtual ~ActiveMuscle(){};

        void assignBaseParticles(BaseParticles *base_particles) override;
        virtual Matd StressPK2(Matd &deformation, size_t index_i) override;
        virtual ActiveMuscle<MuscleType> *ThisObjectPtr() override { return this; };
    };
}