Frictional+Elastic interaction between particles with velocity weakening friction. More...

#include <VWFrictionInteraction.h>

Inheritance diagram for CVWFriction:

Collaboration diagram for CVWFriction:

Public Types
typedef VWFrictionIGP	ParameterType
typedef double(CVWFriction::*	ScalarFieldFunction )() const
typedef Vec3(CVWFriction::*	VectorFieldFunction )() const
typedef pair< bool, double > (CVWFriction::*	CheckedScalarFieldFunction )() const
Public Types inherited from CFrictionInteraction

Public Member Functions
	CVWFriction ()
	CVWFriction (CParticle , CParticle , const VWFrictionIGP &)
virtual void	calcForces ()
pair< bool, double >	getCurrentMu () const
Public Member Functions inherited from CFrictionInteraction
	CFrictionInteraction (CParticle , CParticle )
	CFrictionInteraction (CParticle , CParticle , const CFrictionIGP &)
virtual bool	isPersistent ()
void	setTimeStepSize (double dt)
std::pair< bool, double >	getAbsFrictionalForce () const
std::pair< bool, double >	getAbsFN () const
std::pair< bool, double >	getAbsMuFN () const
std::pair< bool, double >	getSlipVelocity () const
std::pair< bool, double >	getNormalStress () const
std::pair< bool, double >	getMaxFricStress () const
std::pair< bool, double >	getAbsFrictionalStress () const
double	getAbsForceDeficit () const
double	getPotentialEnergy () const
double	getSlipping () const
double	getSticking () const
double	getDissipatedEnergy () const
virtual double	Count () const
Vec3	getForce () const
Vec3	getNormalForce () const
virtual Vec3	getPos () const
std::pair< bool, double >	getMuEff (const Vec3 &, const Vec3 &) const
std::pair< bool, double >	getMuEffXY () const
std::pair< bool, double >	getMuEffXZ () const
virtual void	saveRestartData (std::ostream &oStream)
virtual void	loadRestartData (std::istream &iStream)
Public Member Functions inherited from APairInteraction
	APairInteraction (CParticle , CParticle )
const CParticle *	first () const
const CParticle *	second () const
CParticle *	first ()
CParticle *	second ()
pair< int, int >	getPairID () const
void	setPP (CParticle , CParticle )
void	checkIDs ()
virtual bool	hasTag (int, int) const
virtual Vec3	getPosFirst () const
virtual Vec3	getPosSecond () const
esys::lsm::quintuple< Vec3, double, Vec3, double, Vec3 >	getRaw2Data () const
template<class TmplParticle >
void	setPP (const vector< TmplParticle * > &pp)
Public Member Functions inherited from AInteraction
bool	initialized () const
virtual void	calcHeatTrans ()
virtual void	calcHeatFrict ()
vector< int >	getAllID () const
int	getID ()

Static Public Member Functions
static string	getType ()
static ScalarFieldFunction	getScalarFieldFunction (const string &)
static VectorFieldFunction	getVectorFieldFunction (const string &)
static CheckedScalarFieldFunction	getCheckedScalarFieldFunction (const string &)

Friends
class	TML_PackedMessageInterface

Additional Inherited Members
Protected Attributes inherited from CFrictionInteraction
double	m_k
	spring constant
double	m_r0
	equilibrium distance
double	m_mu
	coefficient of friction
double	m_ks
	shear stiffness (Cundall)
double	m_dt
	time step
Vec3	m_Ffric
	current frictional force
Vec3	m_force_deficit
	difference between fric. force & force necessary for slip
Vec3	m_cpos
	contact position
Vec3	m_normal_force
	current normal force
bool	m_is_slipping
	static/dynamic status of the interaction
bool	m_is_touching
	contact status of the interaction
double	m_E_diss
	dissipated energy
bool	m_scaling
	scaling k with particle radius
Protected Attributes inherited from APairInteraction
CParticle *	m_p1
CParticle *	m_p2
Protected Attributes inherited from AInteraction
vector< int >	m_id
	id's of the particles involved
int	m_iid
	interaction id
bool	m_init

Detailed Description

Frictional+Elastic interaction between particles with velocity weakening friction.

Constructor & Destructor Documentation

CVWFriction::CVWFriction ( )

Default constructor

Member Function Documentation

void CVWFriction::calcForces ( )

virtual

Calculate elastic & frictional forces. The current coefficient of friction is calculated by a velocity weakening friction law $\mu=\frac{\mu_0}{1+2\alpha |v|}$

Reimplemented from CFrictionInteraction.

References CParticle::applyForce(), CFrictionInteraction::m_cpos, CFrictionInteraction::m_dt, CFrictionInteraction::m_Ffric, CFrictionInteraction::m_force_deficit, CFrictionInteraction::m_is_slipping, CFrictionInteraction::m_is_touching, CFrictionInteraction::m_k, CFrictionInteraction::m_ks, CFrictionInteraction::m_mu, and CFrictionInteraction::m_normal_force.

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CVWFriction::CheckedScalarFieldFunction CVWFriction::getCheckedScalarFieldFunction ( const string & name )

static

Get the particle member function which returns a checked scalar field of a given name.

Parameters:

name	the name of the field

Reimplemented from CFrictionInteraction.

References CFrictionInteraction::getAbsFrictionalForce(), CFrictionInteraction::getAbsMuFN(), getCurrentMu(), and CFrictionInteraction::getSlipVelocity().

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pair< bool, double > CVWFriction::getCurrentMu ( ) const

get current coefficient of friction

References CFrictionInteraction::m_mu.

Referenced by getCheckedScalarFieldFunction().

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CVWFriction::ScalarFieldFunction CVWFriction::getScalarFieldFunction ( const string & name )

static

Get the particle member function which returns a scalar field of a given name.

Parameters:

name	the name of the field

Reimplemented from CFrictionInteraction.

References CFrictionInteraction::Count(), CFrictionInteraction::getPotentialEnergy(), CFrictionInteraction::getSlipping(), and CFrictionInteraction::getSticking().

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CVWFriction::VectorFieldFunction CVWFriction::getVectorFieldFunction ( const string & name )

static

Get the particle member function which returns a vector field of a given name.

Parameters:

name	the name of the field

Reimplemented from CFrictionInteraction.

The documentation for this class was generated from the following files:

VWFrictionInteraction.h
VWFrictionInteraction.cpp

Public Types

Public Member Functions

Static Public Member Functions

Friends

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation