RBCEngine Class Reference

Class containing a Rigid Bar Cable (RBC) calculation engine. More...

#include <RBCEngine.h>

Public Member Functions
	RBCEngine (int nofBarElements, double barMass, double length, double omegaNL, double omegaN, double zetaNL, double zetaN, bool fixedFixed, double kei, double ked, double kep)
	The constructor.
	~RBCEngine ()
	The destructor cleans up dynamically allocated memory.
bool	GetInitialStates (const double *const posA, const double *const posB, const double *const velA, const double *const velB, double *vecB, double *vecR, double *vecBdot, double *vecRdot, double *endNodeSum)
bool	StateUpdate (const double *const posA, const double *const posB, const double *const velA, const double *const velB, const double *const vecB, const double *const vecR, const double *const vecBdot, const double *const vecRdot, const double *const endNodeSum, double *addedMass, double *nodeForces, const double dT)
bool	GetAccelerations (double *dotDot, double *rDotDot)
	Get functions are based on the last StateUpdate call.
bool	GetEndForces (double *forceA, double *forceB)
	(dim: 3)
bool	GetNodePositions (double *nodePosition)
	(dim: 3(N+1))
bool	GetNodeVelocities (double *nodeVelocities)
	(dim: 3(N+1))
bool	GetEndNodeSum (double *endNodeSum)
	(dim: 3)

Detailed Description

Author

Nina A H Madsen

Constructor & Destructor Documentation

RBCEngine()

RBCEngine::RBCEngine	(	int	nofBarElements,
		double	barMass,
		double	length,
		double	omegaNL,
		double	omegaN,
		double	zetaNL,
		double	zetaN,
		bool	fixedFixed,
		double	kei,
		double	ked,
		double	kep
	)

Parameters

nofBarElements	The number of bar elements in the cable
barMass	The mass of one bar of the cable.
length	Length of a bar
omegaNL	The natural frequency, length constrain
omegaN	The natural frequency, node constrain
zetaNL	Relative damping ratio, length constrain
zetaN	Relative damping ratio, node constrain
fixedFixed	Is the model fixated in both cable ends
kei	Parameter for FixedFixed
ked	Parameter for FixedFixed
kep	Parameter for FixedFixed

Member Function Documentation

GetAccelerations()

bool RBCEngine::GetAccelerations	(	double *	dotDot,
		double *	rDotDot
	)

(dim: 3N

GetInitialStates()

bool RBCEngine::GetInitialStates	(	const double *const	posA,
		const double *const	posB,
		const double *const	velA,
		const double *const	velB,
		double *	vecB,
		double *	vecR,
		double *	vecBdot,
		double *	vecRdot,
		double *	endNodeSum
	)

Parameters

posA	Position A (dim:3)
posB	Position B (dim:3)
velA	Velocity A (dim:3)
velB	Velocity B (dim:3)
vecB	State vector B (dim:3N) where N is the number of bar elements in the cable
vecR	State vector R (dim:3N)
vecBdot	State vector B time derived(dim:3N)
vecRdot	State vector R time derived (dim:3N)
endNodeSum	State vector EndNodeSum (dim:3)

StateUpdate()

bool RBCEngine::StateUpdate	(	const double *const	posA,
		const double *const	posB,
		const double *const	velA,
		const double *const	velB,
		const double *const	vecB,
		const double *const	vecR,
		const double *const	vecBdot,
		const double *const	vecRdot,
		const double *const	endNodeSum,
		double *	addedMass,
		double *	nodeForces,
		const double	dT
	)

StateUpdate is to be called when the next time step is happening

Parameters

posA	(dim: 3)
posB	(dim: 3)
velA	(dim: 3)
velB	(dim: 3)
vecB	(dim: 3N)
vecR	(dim: 3N)
vecBdot	(dim: 3N)
vecRdot	(dim: 3N)
endNodeSum	(dim: 3)
addedMass	(dim: 3N)
nodeForces	(dim: 6N))
dT	time

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

• /update_root/webfhsim/reloadrepos/fhsim_marine_elements/src/cable/subroutines/RBCEngine.h