ContactManager Class Reference

Manages Slave-Master contact method data and operations using two velocity fields. More...

#include <ContactManager.h>

Collaboration diagram for ContactManager:

Public Member Functions
	ContactManager (vector< Contact * > contact_List, double real_distance_correction_coefficient)
	Constructor.
void	computeContactForces (Mesh *mesh, double time_step)
	Compute nodal contact for sticking and for non sticking contact.
void	nodalUnitNormal (Mesh *mesh, vector< Body * > *bodies)
	Calculate the nodal normal mass vector \( n_I = \frac{\sum_p m_p N_{Ip}}{\left| \sum_p m_p N_{Ip} \right|} \).
void	contactNodalDetection (Mesh *mesh, vector< Body * > *bodies)
	Check if nodes are in contact.
void	realDistanceCorrection (Mesh *mesh, vector< Body * > *bodies)
	Applies the "real distance correction" method for contact detection. \( D^{ MS }_I = - X_I ^ M n_I ^ M - X_I ^ S n_I ^ S \leq \lambda \, d_c\).
void	nodalMomentumContactUpdate (Mesh *mesh, double time_step)
	Update the nodal momentum after contact forces calculation \( p^{ b,k + \frac{1}{2}}_{\, iI} = \bar{ p } ^ { b,k + \frac{1}{2} }_{\, iI} + \Delta t^k f^{ b,c,k }_{\, iI}\).
bool	getRealDistanceCorrectionFlag () const
	Return if the real distance correction is active.
bool	getContactDetectionFlag () const
	Return if contact detection has occurred.
void	applyVelocityContactCorrection (Mesh *mesh, vector< Body * > *bodies, double dt)
	Apply multi field velocity contact correction.

Private Attributes
bool	contactDetection = false
	variable for contact detection
vector< Contact * >	contactList
double	realDistanceCorrectionCoefficient = 0.0
	Real distance correction coefficient \(\lambda\).
bool	realDistanceCorrectionActive = false
	Real distance correction active.

Detailed Description

Manages Slave-Master contact method data and operations using two velocity fields.

Constructor & Destructor Documentation

ContactManager()

ContactManager::ContactManager	(	vector< Contact * >	contact_List,
		double	real_distance_correction_coefficient
	)

Constructor.

Parameters

contact	list
real_distance_correction_coefficient	Real distance correction coefficient (0 to disable)

Member Function Documentation

applyVelocityContactCorrection()

void ContactManager::applyVelocityContactCorrection	(	Mesh *	mesh,
		vector< Body * > *	bodies,
		double	dt
	)

Apply multi field velocity contact correction.

Parameters

mesh
bodies
dt

computeContactForces()

void ContactManager::computeContactForces	(	Mesh *	mesh,
		double	time_step
	)

Compute nodal contact for sticking and for non sticking contact.

Parameters

[in]

time_step

Time step

contactNodalDetection()

void ContactManager::contactNodalDetection	(	Mesh *	mesh,
		vector< Body * > *	bodies
	)

Check if nodes are in contact.

Parameters

[in]	mesh	Mesh reference
[in]	bodies	A list of Bodies

getContactDetectionFlag()

bool ContactManager::getContactDetectionFlag ( ) const

inline

Return if contact detection has occurred.

Returns

contact detection flag

getRealDistanceCorrectionFlag()

bool ContactManager::getRealDistanceCorrectionFlag ( ) const

inline

Return if the real distance correction is active.

Returns

real distance correction active

nodalMomentumContactUpdate()

void ContactManager::nodalMomentumContactUpdate	(	Mesh *	mesh,
		double	time_step
	)

Update the nodal momentum after contact forces calculation \( p^{ b,k + \frac{1}{2}}_{\, iI} = \bar{ p } ^ { b,k + \frac{1}{2} }_{\, iI} + \Delta t^k f^{ b,c,k }_{\, iI}\).

Parameters

[in]	mesh	Mesh reference
[in]	time_step	Time step

nodalUnitNormal()

void ContactManager::nodalUnitNormal	(	Mesh *	mesh,
		vector< Body * > *	bodies
	)

Calculate the nodal normal mass vector \( n_I = \frac{\sum_p m_p N_{Ip}}{\left| \sum_p m_p N_{Ip} \right|} \).

Parameters

[in]	mesh	Mesh reference
[in]	bodies	A list of Bodies

realDistanceCorrection()

void ContactManager::realDistanceCorrection	(	Mesh *	mesh,
		vector< Body * > *	bodies
	)

Applies the "real distance correction" method for contact detection. \( D^{ MS }_I = - X_I ^ M n_I ^ M - X_I ^ S n_I ^ S \leq \lambda \, d_c\).

Parameters

[in]	mesh	Mesh reference
[in]	bodies	A list of Bodies

Member Data Documentation

contactDetection

bool ContactManager::contactDetection = false

private

variable for contact detection

contactList

vector<Contact*> ContactManager::contactList

private

realDistanceCorrectionActive

bool ContactManager::realDistanceCorrectionActive = false

private

Real distance correction active.

realDistanceCorrectionCoefficient

double ContactManager::realDistanceCorrectionCoefficient = 0.0

private

Real distance correction coefficient \(\lambda\).

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

• ContactManager.h