StressStrainControlBoundary.h

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// This file is part of the MercuryDPM project (https://www.mercurydpm.org).
// Copyright (c), The MercuryDPM Developers Team. All rights reserved.
// License: BSD 3-Clause License; see the LICENSE file in the root directory.
 
#ifndef StressStrainControlBoundary_H
#define StressStrainControlBoundary_H
 
#include "BaseBoundary.h"
#include "Math/ExtendedMath.h"
#include "Side.h"
#include "LeesEdwardsBoundary.h"
#include "PeriodicBoundary.h"
#include "Controllers/PController.h"
#include "Controllers/PIController.h"
#include "Controllers/PIDController.h"
class PeriodicBoundaryHandler;
 
class StressStrainControlBoundary : public BaseBoundary
{
public:
 
    StressStrainControlBoundary();
    
    StressStrainControlBoundary(const StressStrainControlBoundary& b) = default;
    
    virtual ~StressStrainControlBoundary() = default;
    
    void read(std::istream& is) override;
    
    void write(std::ostream& os) const override;
    
    std::string getName() const override;
    
    StressStrainControlBoundary* copy() const override;
    
    void checkBoundaryAfterParticlesMove(ParticleHandler& particleHandler) override;
 
    void set(const Matrix3D& stressGoal, const Matrix3D& strainRate, const Matrix3D& pGain,
             bool isStrainRateControlled, const Matrix3D& iGain = {0, 0, 0, 0, 0, 0, 0, 0, 0});
 
    void setStrainRate(const Matrix3D& strainRate);
 
    void createPeriodicParticles(ParticleHandler& particleHandler) override;
    
    //helper functions
    
    void checkPeriodicLeesEdwardsBoundariesAfterParticlesMove(ParticleHandler& particleHandler);
    
    void determineLengthAndCentre();
 
    void activateStrainRateControl(const ParticleHandler& particleHandler);
    
    void computeStrainRate();
    
    void determineStressControlledShearBoundaries();
 
    void updateDomainSize();
 
    Matrix3D getStrainRate() const {return strainRate_;}
 
    Matrix3D getStressGoal() const {return stressGoal_;}
 
    Matrix3D getGainFactor() const {return pGainFactor_;}
 
 
    Mdouble computeStressError();
 
 
 
    double getIntegratedShift() const {return integratedShift_;}
 
    const PIController& getXX () const { return xx; }
    const PIController& getXY () const { return xy; }
    const PIController& getYY () const { return yy; }
    const PIController& getZZ () const { return zz; }
 
private:
 
    //Set by the user.
    Matrix3D stressGoal_, strainRate_, pGainFactor_;
 
    Matrix3D iGainFactor_;
 
    PIController xx, xy, yy, zz;
 
    bool isStrainRateControlled_;
 
    Mdouble integratedShift_;
 
    //Defined in the set function.
 
    std::vector<LeesEdwardsBoundary> leesEdwardsBoundaries_;
    std::vector<PeriodicBoundary> periodicBoundaries_;
};
 
#endif