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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 __HERTZIANELASTICINTERACTION_H
#define __HERTZIANELASTICINTERACTION_H
#include "Model/IGParam.h"
#include "Model/Interaction.h"
#include "Model/Particle.h"
/*!
\brief Interaction group parameters for Hertzian elastic interactions
*/
class CHertzianElasticIGP : public AIGParam
{
public:
double m_E;
double m_nu; // poisson ratio
CHertzianElasticIGP();
CHertzianElasticIGP(const std::string&,double,double);
virtual std::string getTypeString() const {return "HertzianElastic";}
};
/*!
\class CHertzianElasticInteraction
\brief Hertzian Elastic Interaction between free particles
\author Steffen Abe
$Revision: 1201 $
$Date: 2009-07-31 12:25:45 +0200 (Fri, 31 Jul 2009) $
*/
class CHertzianElasticInteraction : public APairInteraction
{
public:
typedef double (CHertzianElasticInteraction::* ScalarFieldFunction)() const;
typedef Vec3 (CHertzianElasticInteraction::* VectorFieldFunction)() const;
typedef pair<bool,double> (CHertzianElasticInteraction::* CheckedScalarFieldFunction)() const;
static ScalarFieldFunction getScalarFieldFunction(const string&);
static VectorFieldFunction getVectorFieldFunction(const string&);
static CheckedScalarFieldFunction getCheckedScalarFieldFunction(const string&);
private:
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 CHertzianElasticIGP ParameterType;
CHertzianElasticInteraction(CParticle*,CParticle*,const CHertzianElasticIGP&);
virtual ~CHertzianElasticInteraction(){};
virtual Vec3 getPos() const {return m_cpos;};
double getPotentialEnergy() const;
virtual void calcForces();
Vec3 getForce() const;
};
#endif //__HERTZIANELASTICINTERACTION_H
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