MindlinSpecies.cc

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#include <cmath>
#include <Species/NormalForceSpecies/HertzianViscoelasticNormalSpecies.h>
#include "MindlinSpecies.h"
#include "Species/NormalForceSpecies/LinearViscoelasticNormalSpecies.h"
#include "Species/BaseSpecies.h"
#include "Species/NormalForceSpecies/LinearPlasticViscoelasticNormalSpecies.h"

class BaseParticle;

class BaseInteractable;

MindlinSpecies::MindlinSpecies()
{
    slidingDissipation_ = 0;
    slidingFrictionCoefficient_ = 0;
    slidingFrictionCoefficientStatic_ = 0;
    shearModulus_ = 0;
#ifdef DEBUG_CONSTRUCTOR
    std::cout<<"MindlinSpecies::MindlinSpecies() finished"<<std::endl;
#endif
}

MindlinSpecies::MindlinSpecies(const MindlinSpecies& s)
{
    slidingDissipation_ = s.slidingDissipation_;
    slidingFrictionCoefficient_ = s.slidingFrictionCoefficient_;
    slidingFrictionCoefficientStatic_ = s.slidingFrictionCoefficientStatic_;
    shearModulus_ = s.shearModulus_;
#ifdef DEBUG_CONSTRUCTOR
    std::cout<<"MindlinSpecies::MindlinSpecies(const MindlinSpecies &p) finished"<<std::endl;
#endif
}

MindlinSpecies::~MindlinSpecies()
{
#ifdef DEBUG_DESTRUCTOR
    std::cout<<"MindlinSpecies::~MindlinSpecies() finished"<<std::endl;
#endif
}

void MindlinSpecies::write(std::ostream& os) const
{
    //BaseSpecies::write(os);
    os << " slidingDissipation " << slidingDissipation_;
    os << " slidingFrictionCoefficient " << slidingFrictionCoefficient_;
    os << " slidingFrictionCoefficientStatic " << slidingFrictionCoefficientStatic_;
    os << " shearModulus " << shearModulus_;
}

void MindlinSpecies::read(std::istream& is)
{
    //BaseSpecies::read(is);
    std::string dummy;
    is >> dummy >> slidingDissipation_;
    is >> dummy >> slidingFrictionCoefficient_;
    is >> dummy >> slidingFrictionCoefficientStatic_;
    is >> dummy >> shearModulus_;
}

std::string MindlinSpecies::getBaseName() const
{
    return "Mindlin";
}


void MindlinSpecies::setSlidingDissipation(Mdouble new_dispt)
{
    if (new_dispt >= 0)
        slidingDissipation_ = new_dispt;
    else
    {
        std::cerr << "Error in setSlidingDissipation" << std::endl;
        exit(-1);
    }
}

Mdouble MindlinSpecies::getSlidingDissipation() const
{
    return slidingDissipation_;
}

//mu has to be set to allow tangential forces (sets dispt=disp as default)
void MindlinSpecies::setSlidingFrictionCoefficient(Mdouble new_mu)
{
    if (new_mu >= 0)
    {
        slidingFrictionCoefficient_ = new_mu;
        slidingFrictionCoefficientStatic_ = slidingFrictionCoefficient_;
    }
    else
    {
        std::cerr << "Error in setSlidingFrictionCoefficient" << std::endl;
        exit(-1);
    }
}

Mdouble MindlinSpecies::getSlidingFrictionCoefficient() const
{
    return slidingFrictionCoefficient_;
}

void MindlinSpecies::setSlidingFrictionCoefficientStatic(Mdouble new_mu)
{
    if (new_mu >= 0)
    {
        slidingFrictionCoefficientStatic_ = new_mu;
    }
    else
    {
        std::cerr << "Error in setSlidingFrictionCoefficientStatic" << std::endl;
        exit(-1);
    }
}

void MindlinSpecies::setPoissonRatio(Mdouble poissonRatio)
{
    auto hertz = dynamic_cast<HertzianViscoelasticNormalSpecies*>(getBaseSpecies());
    logger.assert(hertz, "setPoissonRatio only works with HertzianViscoelastic*Species.");
    shearModulus_ = hertz->getEffectiveElasticModulus() / 2 * (1 + poissonRatio);
    logger(INFO, "Effective shear modulus set to %, based on effective elastic modulus % and Poisson's ratio %",
           getEffectiveShearModulus(),
           hertz->getEffectiveElasticModulus(), poissonRatio);
}

//Mdouble MindlinSpecies::getPoissonRatio() const
//{
//    auto hertz = dynamic_cast<HertzianViscoelasticNormalSpecies*>(getBaseSpecies());
//    logger.assert(hertz, "getPoissonRatio only works with HertzianViscoelastic*Species.");
//    return 2. * shearModulus_ / hertz->getEffectiveElasticModulus() - 1;
//}

void MindlinSpecies::setEffectiveShearModulus(Mdouble shearModulus)
{
    logger.assert(shearModulus > 0,
                  "setEffectiveShearModulus(%): value needs to be positive",shearModulus);
    shearModulus_ = shearModulus;
}

Mdouble MindlinSpecies::getEffectiveShearModulus() const
{
    return shearModulus_;
}

Mdouble MindlinSpecies::getSlidingFrictionCoefficientStatic() const
{
    return slidingFrictionCoefficientStatic_;
}

bool MindlinSpecies::getUseAngularDOFs() const
{
    return true;
}

void MindlinSpecies::mix(MindlinSpecies* const SFrictional, MindlinSpecies* const TFrictional)
{
    slidingDissipation_ = BaseSpecies::average(SFrictional->getSlidingDissipation(),TFrictional->getSlidingDissipation());
    slidingFrictionCoefficient_ = BaseSpecies::average(SFrictional->getSlidingFrictionCoefficient(),TFrictional->getSlidingFrictionCoefficient());
    slidingFrictionCoefficientStatic_ = BaseSpecies::average(SFrictional->getSlidingFrictionCoefficientStatic(),TFrictional->getSlidingFrictionCoefficientStatic());
    shearModulus_ = BaseSpecies::average(SFrictional->getEffectiveShearModulus(), TFrictional->getEffectiveShearModulus());
}