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/////////////////////////////////////////////////////////////
// //
// Copyright (c) 2003-2014 by The University of Queensland //
// Centre for Geoscience Computing //
// http://earth.uq.edu.au/centre-geoscience-computing //
// //
// Primary Business: Brisbane, Queensland, Australia //
// Licensed under the Open Software License version 3.0 //
// http://www.apache.org/licenses/LICENSE-2.0 //
// //
/////////////////////////////////////////////////////////////
#ifndef __HERTZIANVISCOELASTICINTERACTION_H
#define __HERTZIANVISCOELASTICINTERACTION_H
#include "Model/IGParam.h"
#include "Model/Interaction.h"
#include "Model/Particle.h"
/*!
\brief Interaction group parameters for Hertzian viscoelastic interactions
*/
class CHertzianViscoElasticIGP : public AIGParam
{
public:
double m_A;
double m_E;
double m_nu; // poisson ratio
CHertzianViscoElasticIGP();
CHertzianViscoElasticIGP(const std::string&,double,double,double);
virtual std::string getTypeString() const {return "HertzianViscoElastic";}
};
/*!
\class CHertzianViscoElasticInteraction
\brief Hertzian ViscoElastic Interaction between free particles
\author Laura Heredia & Pablo Richeri
$Revision: 1 $
$Date: 2009-12-13 19:00:00 -0300 (Sun, 13 Dec 2009) $
*/
class CHertzianViscoElasticInteraction : public APairInteraction
{
public:
typedef
double (CHertzianViscoElasticInteraction::* ScalarFieldFunction)() const;
typedef
Vec3 (CHertzianViscoElasticInteraction::* VectorFieldFunction)() const;
typedef
pair<bool,double>
(CHertzianViscoElasticInteraction::* CheckedScalarFieldFunction)() const;
static ScalarFieldFunction getScalarFieldFunction(const string&);
static VectorFieldFunction getVectorFieldFunction(const string&);
static CheckedScalarFieldFunction getCheckedScalarFieldFunction(
const string&
);
private:
double m_A;//!< Damping constant
double m_E;//!< Young's modulus
double m_nu; //!< Poisson ratio
Vec3 m_force; // caching force for E_pot
double m_dn; // caching displacement for E_pot
Vec3 m_cpos; // center position
public:
typedef CHertzianViscoElasticIGP ParameterType;
CHertzianViscoElasticInteraction(
CParticle*,
CParticle*,
const CHertzianViscoElasticIGP&
);
virtual ~CHertzianViscoElasticInteraction(){};
virtual Vec3 getPos() const {return m_cpos;};
double getPotentialEnergy() const;
virtual void calcForces();
Vec3 getForce() const;
};
#endif //__HERTZIANVISCOELASTICINTERACTION_H
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