ESyS-Particle  2.2
HertzianElasticInteraction.h
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1 
2 // //
3 // Copyright (c) 2003-2013 by The University of Queensland //
4 // Earth Systems Science Computational Centre (ESSCC) //
5 // http://www.uq.edu.au/esscc //
6 // //
7 // Primary Business: Brisbane, Queensland, Australia //
8 // Licensed under the Open Software License version 3.0 //
9 // http://www.opensource.org/licenses/osl-3.0.php //
10 // //
12 
13 #ifndef __HERTZIANELASTICINTERACTION_H
14 #define __HERTZIANELASTICINTERACTION_H
15 
16 #include "Model/IGParam.h"
17 #include "Model/Interaction.h"
18 #include "Model/Particle.h"
19 
20 
24 class CHertzianElasticIGP : public AIGParam
25 {
26 public:
27  double m_E;
28  double m_nu; // poisson ratio
29 
30  CHertzianElasticIGP();
31  CHertzianElasticIGP(const std::string&,double,double);
32 
33  virtual std::string getTypeString() const {return "HertzianElastic";}
34 };
35 
43 class CHertzianElasticInteraction : public APairInteraction
44 {
45 public:
46 
47  typedef double (CHertzianElasticInteraction::* ScalarFieldFunction)() const;
48  typedef Vec3 (CHertzianElasticInteraction::* VectorFieldFunction)() const;
49  typedef pair<bool,double> (CHertzianElasticInteraction::* CheckedScalarFieldFunction)() const;
50 
51  static ScalarFieldFunction getScalarFieldFunction(const string&);
52  static VectorFieldFunction getVectorFieldFunction(const string&);
53  static CheckedScalarFieldFunction getCheckedScalarFieldFunction(const string&);
54 
55 private:
56  double m_E;
57  double m_nu;
58  Vec3 m_force; // caching force for E_pot
59  double m_dn; // caching displacement for E_pot
60  Vec3 m_cpos; // center position
61 
62 public:
63  typedef CHertzianElasticIGP ParameterType;
64 
65  CHertzianElasticInteraction(CParticle*,CParticle*,const CHertzianElasticIGP&);
66  virtual ~CHertzianElasticInteraction(){};
67 
68  virtual Vec3 getPos() const {return m_cpos;};
69  double getPotentialEnergy() const;
70 
71  virtual void calcForces();
72  Vec3 getForce() const;
73 };
74 #endif //__HERTZIANELASTICINTERACTION_H