LinearViscoelasticNormalSpecies.h
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25 
26 #ifndef LinearViscoelasticNormalSpecies_H
27 #define LinearViscoelasticNormalSpecies_H
28 
30 #include "Math/ExtendedMath.h"
32 #include "Math/Helpers.h"
33 
39 {
40 public:
43 
46 
49 
52 
54  void read(std::istream& is);
55 
57  void write(std::ostream& os) const;
58 
60  std::string getBaseName() const;
61 
62 // Species-specific functions
63 
65  Mdouble getMaximumVelocity(Mdouble radius, Mdouble mass) const;
66 
69 
71  void setRestitutionCoefficient(double eps, Mdouble mass);
72 
75 
78 
82  void setCollisionTimeAndRestitutionCoefficient(Mdouble collisionTime, Mdouble restitutionCoefficient, Mdouble mass1,
83  Mdouble mass2);
84 
88  Mdouble getCollisionTime(Mdouble mass) const;
89 
94 
97 
98 //setters and getters
99 
101  void setStiffness(Mdouble new_k);
102 
104  Mdouble getStiffness() const;
105 
106  void setDissipation(Mdouble dissipation);
107 
109  Mdouble getDissipation() const;
110 
114 
116  {
117  return 0.02 * constants::pi /
118  std::sqrt(stiffness_ / (.5 * mass) - mathsFunc::square(dissipation_ / mass));
119  }
120 
121 private:
124 };
125 
126 #endif
#define MERCURYDPM_DEPRECATED
Definition: GeneralDefine.h:37
Definition: BaseNormalForce.h:32
Definition: BaseParticle.h:54
Enables one to compute normal forces in case of a linear visco-elastic interaction.
Definition: LinearViscoelasticInteraction.h:40
LinearViscoelasticNormalSpecies contains the parameters used to describe a linear elastic-dissipative...
Definition: LinearViscoelasticNormalSpecies.h:39
void setStiffnessAndRestitutionCoefficient(Mdouble k_, Mdouble eps, Mdouble mass)
Sets k, disp such that it matches a given tc and eps for a collision of two copies of P.
Definition: LinearViscoelasticNormalSpecies.cc:186
Mdouble dissipation_
(normal) viscosity
Definition: LinearViscoelasticNormalSpecies.h:123
void setRestitutionCoefficient(double eps, Mdouble mass)
Sets disp to obtain a restitution coefficient eps for a collision of two particles of mass m.
Definition: LinearViscoelasticNormalSpecies.cc:199
Mdouble getMaximumVelocity(Mdouble radius, Mdouble mass) const
Calculates the maximum velocity allowed for a collision of two copies of P (for higher velocities par...
Definition: LinearViscoelasticNormalSpecies.cc:175
void write(std::ostream &os) const
Writes the species properties to an output stream.
Definition: LinearViscoelasticNormalSpecies.cc:68
Mdouble stiffness_
(normal) spring constant
Definition: LinearViscoelasticNormalSpecies.h:122
Mdouble getStiffness() const
Allows the spring constant to be accessed.
Definition: LinearViscoelasticNormalSpecies.cc:104
Mdouble getCollisionTime(Mdouble mass) const
Calculates collision time for two copies of a particle of given disp, k, mass.
Definition: LinearViscoelasticNormalSpecies.cc:137
void setDissipation(Mdouble dissipation)
Allows the normal dissipation to be changed.
Definition: LinearViscoelasticNormalSpecies.cc:117
LinearViscoelasticInteraction InteractionType
The correct Interaction type for this FrictionForceSpecies.
Definition: LinearViscoelasticNormalSpecies.h:42
~LinearViscoelasticNormalSpecies()
The default destructor.
Definition: LinearViscoelasticNormalSpecies.cc:58
Mdouble computeTimeStep(Mdouble mass)
Definition: LinearViscoelasticNormalSpecies.h:115
void setCollisionTimeAndRestitutionCoefficient(Mdouble tc, Mdouble eps, BaseParticle *p)
Sets k, disp such that it matches a given tc and eps for a collision of two copies of particle p.
Definition: LinearViscoelasticNormalSpecies.cc:212
void read(std::istream &is)
Reads the species properties from an input stream.
Definition: LinearViscoelasticNormalSpecies.cc:77
Mdouble getDissipation() const
Allows the normal dissipation to be accessed.
Definition: LinearViscoelasticNormalSpecies.cc:130
LinearViscoelasticNormalSpecies()
The default constructor.
Definition: LinearViscoelasticNormalSpecies.cc:35
void setStiffness(Mdouble new_k)
Allows the spring constant to be changed.
Definition: LinearViscoelasticNormalSpecies.cc:93
Mdouble getRestitutionCoefficient(Mdouble mass) const
Calculates restitution coefficient for two copies of given disp, k, mass.
Definition: LinearViscoelasticNormalSpecies.cc:168
MERCURYDPM_DEPRECATED void setStiffnessAndDissipation(helpers::KAndDisp new_)
Allows the spring and dissipation constants to be changed simultaneously.
Definition: LinearViscoelasticNormalSpecies.cc:110
void mix(LinearViscoelasticNormalSpecies *SBase, LinearViscoelasticNormalSpecies *TBase)
creates default values for mixed species
Definition: LinearViscoelasticNormalSpecies.cc:267
std::string getBaseName() const
Used in Species::getName to obtain a unique name for each Species.
Definition: LinearViscoelasticNormalSpecies.cc:87
const Mdouble pi
Definition: ExtendedMath.h:45
T square(const T val)
squares a number
Definition: ExtendedMath.h:106
return type specifically for fuctions returning k and disp at once
Definition: FormulaHelpers.h:38