This class implements a Heaviside step load time function. More...

#include <heavisidetimefunction.h>

Inheritance diagram for oofem::HeavisideTimeFunction:

Collaboration diagram for oofem::HeavisideTimeFunction:

Public Member Functions
	HeavisideTimeFunction (int i, Domain *d)

virtual	~HeavisideTimeFunction ()

virtual IRResultType	initializeFrom (InputRecord *ir)
	Initializes receiver according to object description stored in input record. More...

virtual void	giveInputRecord (DynamicInputRecord &input)
	Setups the input record string of receiver. More...

virtual const char *	giveClassName () const

virtual const char *	giveInputRecordName () const

virtual double	evaluateAtTime (double)
	Returns the value of the function at given time. More...

virtual double	evaluateVelocityAtTime (double t)
	Returns the first time derivative of the function at given time. More...

virtual double	evaluateAccelerationAtTime (double t)
	Returns the second time derivative of the function at given time. More...

Public Member Functions inherited from oofem::Function
	Function (int n, Domain *d)
	Constructor. More...

virtual	~Function ()
	Destructor. More...

double	evaluate (TimeStep *tStep, ValueModeType mode)
	Returns the value of load time function at given time. More...

virtual void	evaluate (FloatArray &answer, const std::map< std::string, FunctionArgument > &valDict, GaussPoint *gp=NULL, double param=0.)
	Returns the value of the function for given input. More...

virtual double	evaluate (const std::map< std::string, FunctionArgument > &valDict)
	Returns the (scalar) value of the function for given input. More...

double	giveFunctionParameter (int paramID)

Public Member Functions inherited from oofem::FEMComponent
	FEMComponent (int n, Domain *d)
	Regular constructor, creates component with given number and belonging to given domain. More...

virtual	~FEMComponent ()
	Virtual destructor. More...

Domain *	giveDomain () const

virtual void	setDomain (Domain *d)
	Sets associated Domain. More...

int	giveNumber () const

void	setNumber (int num)
	Sets number of receiver. More...

virtual void	updateLocalNumbering (EntityRenumberingFunctor &f)
	Local renumbering support. More...

virtual contextIOResultType	saveContext (DataStream &stream, ContextMode mode, void *obj=NULL)
	Stores receiver state to output stream. More...

virtual contextIOResultType	restoreContext (DataStream &stream, ContextMode mode, void *obj=NULL)
	Restores the receiver state previously written in stream. More...

virtual int	checkConsistency ()
	Allows programmer to test some internal data, before computation begins. More...

virtual void	printOutputAt (FILE file, TimeStep tStep)
	Prints output of receiver to stream, for given time step. More...

virtual void	printYourself ()
	Prints receiver state on stdout. Useful for debugging. More...

virtual Interface *	giveInterface (InterfaceType t)
	Interface requesting service. More...

std::string	errorInfo (const char *func) const
	Returns string for prepending output (used by error reporting macros). More...

Private Attributes
double	origin

double	value

Additional Inherited Members
Public Attributes inherited from oofem::Function
Domain *	funcDomain

int	parameterType

Protected Attributes inherited from oofem::FEMComponent
int	number
	Component number. More...

Domain *	domain
	Link to domain object, useful for communicating with other FEM components. More...

Detailed Description

This class implements a Heaviside step load time function.

The function is defined by the origin of step and value. The result is value*H(t-origin), where

$H(t) = \begin{cases} 0,& t\leq 0 \\ 1, & t>0 \end{cases}$

Definition at line 59 of file heavisidetimefunction.h.

Constructor & Destructor Documentation

oofem::HeavisideTimeFunction::HeavisideTimeFunction	(	int	i,
		Domain *	d
	)

inline

Definition at line 65 of file heavisidetimefunction.h.

virtual oofem::HeavisideTimeFunction::~HeavisideTimeFunction ( )

inlinevirtual

Definition at line 69 of file heavisidetimefunction.h.

Member Function Documentation

virtual double oofem::HeavisideTimeFunction::evaluateAccelerationAtTime ( double t )

inlinevirtual

Returns the second time derivative of the function at given time.

Parameters

t Time.

Returns: .

Implements oofem::Function.

Definition at line 78 of file heavisidetimefunction.h.

double oofem::HeavisideTimeFunction::evaluateAtTime ( double t )

virtual

Returns the value of the function at given time.

Parameters

t Time.

Returns: .

Reimplemented from oofem::Function.

Definition at line 43 of file heavisidetimefunction.C.

References origin, and value.

virtual double oofem::HeavisideTimeFunction::evaluateVelocityAtTime ( double t )

inlinevirtual

Returns the first time derivative of the function at given time.

Parameters

t Time.

Returns: .

Implements oofem::Function.

Definition at line 77 of file heavisidetimefunction.h.

virtual const char* oofem::HeavisideTimeFunction::giveClassName ( ) const

inlinevirtual

Returns: Class name of the receiver.

Implements oofem::FEMComponent.

Definition at line 73 of file heavisidetimefunction.h.

void oofem::HeavisideTimeFunction::giveInputRecord ( DynamicInputRecord & input )

virtual

Setups the input record string of receiver.

Parameters

input Dynamic input record to be filled by receiver.

Reimplemented from oofem::FEMComponent.

Definition at line 66 of file heavisidetimefunction.C.

References _IFT_HeavisideTimeFunction_origin, _IFT_HeavisideTimeFunction_value, oofem::FEMComponent::giveInputRecord(), origin, oofem::DynamicInputRecord::setField(), and value.

virtual const char* oofem::HeavisideTimeFunction::giveInputRecordName ( ) const

inlinevirtual

Returns: Input record name of the receiver.

Implements oofem::FEMComponent.

Definition at line 74 of file heavisidetimefunction.h.

References _IFT_HeavisideTimeFunction_Name.

IRResultType oofem::HeavisideTimeFunction::initializeFrom ( InputRecord * ir )

virtual

Initializes receiver according to object description stored in input record.

This function is called immediately after creating object using constructor. Input record can be imagined as data record in component database belonging to receiver. Receiver may use value-name extracting functions to extract particular field from record.