FESlidingInterface Class Reference

This class implements a sliding interface. More...

#include <FESlidingInterface.h>

Inheritance diagram for FESlidingInterface:

Public Member Functions
	FESlidingInterface (FEModel *pfem)
	constructor
virtual	~FESlidingInterface ()
	destructor
bool	Init ()
	Initializes sliding interface.
void	Update ()
	update interface data
void	ProjectSurface (FESlidingSurface &ss, FESlidingSurface &ms, bool bupseg, bool bmove=false)
	projects slave nodes onto master nodes
void	ShallowCopy (FEContactInterface &ci)
	shallow copy
double	Penalty ()
	calculate penalty value
virtual void	ContactForces (vector< double > &F)
	calculate contact forces
virtual void	ContactStiffness ()
	calculate contact stiffness
virtual bool	Augment (int naug)
	calculate Lagrangian augmentations
void	Serialize (DumpFile &ar)
	serialize data to archive
void	UpdateContactPressures ()
	calculate contact pressures for file output
	DECLARE_PARAMETER_LIST ()
Data Fields
FESlidingSurface	m_ss
	slave surface
FESlidingSurface	m_ms
	master surface
bool	m_btwo_pass
	two pass algorithm flag
int	m_naugmax
	maximum nr of augmentations
int	m_naugmin
	minimum nr of augmentations
double	m_gtol
	gap tolerance
double	m_atol
	augmentation tolerance
double	m_ktmult
	multiplier for tangential stiffness
double	m_knmult
	multiplier for normal stiffness
double	m_stol
	search tolerance
int	m_nautopen
	auto penalty calculation factor (0=none, 1=old, 2=new)
double	m_eps
	penalty scale factor
bool	m_breloc
	initial node relocation
double	m_mu
	friction coefficient
double	m_epsf
	penalty scale factor for friction
int	m_nsegup
	segment update parameter
int	m_nplc
	penalty load curve number
FELoadCurve *	m_pplc
	pointer to penalty load curve
Protected Member Functions
void	CalcAutoPenalty (FESlidingSurface &s)
	calculate auto penalty factor
void	ContactNodalForce (int m, FESlidingSurface &ss, FESurfaceElement &mel, vector< double > &fe)
	calculate the nodal force of a slave node
void	ContactNodalStiffness (int m, FESlidingSurface &ss, FESurfaceElement &mel, matrix &ke)
	calculate the stiffness contribution of a single slave node
void	MapFrictionData (int inode, FESlidingSurface &ss, FESlidingSurface &ms, FESurfaceElement &sn, FESurfaceElement &so, vec3d &q)
	map the frictional data from the old element to the new element

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Detailed Description

This class implements a sliding interface.

The FESlidingInterface class defines an interface between two surfaces. These surfaces define the slave and master surfaces of the contact interface.

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Member Function Documentation

void FESlidingInterface::CalcAutoPenalty

(

FESlidingSurface &

s

)

[protected]

calculate auto penalty factor

Calculates the auto penalty factor.

void FESlidingInterface::ContactNodalForce	(	int	m,
		FESlidingSurface &	ss,
		FESurfaceElement &	mel,
		vector< double > &	fe
	)		[protected]

calculate the nodal force of a slave node

Calculates the contact force on a slave node.

Parameters:

[in]	m	local node number
[in]	ss	slave surface
[in]	mel	master surface element
[out]	fe	force vector

bool FESlidingInterface::Init

(

)

[virtual]

Initializes sliding interface.

Initializes the sliding interface data.

Implements FEContactInterface.

void FESlidingInterface::MapFrictionData	(	int	inode,
		FESlidingSurface &	ss,
		FESlidingSurface &	ms,
		FESurfaceElement &	sn,
		FESurfaceElement &	so,
		vec3d &	q
	)		[protected]

map the frictional data from the old element to the new element

This function transforms friction data between two master segments.

void FESlidingInterface::ProjectSurface	(	FESlidingSurface &	ss,
		FESlidingSurface &	ms,
		bool	bupseg,
		bool	bmove = false
	)

projects slave nodes onto master nodes

Projects the slave surface onto the master surface. That is for each slave node we determine the closest master element and the projection of the slave node onto this master element.

void FESlidingInterface::Update

(

)

[virtual]

update interface data

updates sliding interface data

Implements FEContactInterface.

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

• FEBio/FESlidingInterface.h
• FEBio/FESlidingInterface.cpp