Base class for arc length integrators. More...

#include <ProtoArcLength.h>

Inheritance diagram for XC::ProtoArcLength:

Public Member Functions
int	newStep (void)
	Performs the first iteration, that is it solves for \(\lambda_n^{(1)}\) and \(\Delta U_n^{(1)}\) and updates the model with \(\Delta U_n^{(1)}\) and increments the load factor by \(\lambda_n^{(1)}\). More...

int	update (const Vector &deltaU)
	Updates the model. More...

int	domainChanged (void)
	Response to a change in the domain. More...

int	sendSelf (CommParameters &)
	Send the object. More...

int	recvSelf (const CommParameters &)
	Receive the object. More...

Public Member Functions inherited from XC::StaticIntegrator
virtual int	formEleTangent (FE_Element *theEle)
	Asks the element being passed as parameter to build its tangent stiffness matrix. More...

virtual int	formEleResidual (FE_Element *theEle)
	To form the residual vector of the FE_Element. More...

virtual int	formNodTangent (DOF_Group *theDof)
	This should never be called in a static analysis. More...

virtual int	formNodUnbalance (DOF_Group *theDof)
	Form the unbalance vector for the DOF_Group. More...

Public Member Functions inherited from XC::IncrementalIntegrator
virtual int	formTangent (int statusFlag=CURRENT_TANGENT)
	Builds tangent stiffness matrix. More...

virtual int	formUnbalance (void)
	Builds the unbalanced load vector (right hand side of the equation). More...

virtual int	newStep (double deltaT)
	Invoked to inform the integrator that the transient analysis is proceeding to the next time step. More...

virtual int	commit (void)
	Invoked by the SolutionAlgorithm to inform the Integrator that current state of domain is on solution path. More...

virtual int	revertToLastStep (void)

virtual int	initialize (void)

virtual int	revertToStart ()

virtual int	getLastResponse (Vector &result, const ID &id)
	Returns the response on the DOFs being passed as parameter. More...

Public Member Functions inherited from XC::Integrator
virtual void	Print (std::ostream &s, int flag=0)
	The Integrator is to send information to the stream based on the integer `flag`. More...

Public Member Functions inherited from XC::MovableObject
	MovableObject (int classTag, int dbTag)
	Constructor. More...

	MovableObject (int classTag)
	Constructor. More...

	MovableObject (const MovableObject &)
	Copy constructor. Doesn't copy the dbTag.

MovableObject &	operator= (const MovableObject &)
	Assignment operator. Doesn't copy the dbTag.

int	getClassTag (void) const
	Return the class identifier.

int	getDbTag (void) const
	Return the object identifier in the database.

int	getDbTag (CommParameters &)
	Return the object identifier in the database.

void	setDbTag (int dbTag)
	Sets the object identifier in the database.

void	setDbTag (CommParameters &)
	Sets the object identifier in the database if not already set. More...

virtual int	setParameter (const std::vector< std::string > &argv, Parameter &param)
	Sets the value `param` to the parameter `argv`.

virtual int	updateParameter (int parameterID, Information &info)
	Updates the parameter identified by `parameterID` with `info`.

virtual int	activateParameter (int parameterID)
	Activates the parameter identified by `parameterID`.

virtual int	setVariable (const std::string &variable, Information &)
	Set the value of the variable idenfified by `var`.

virtual int	getVariable (const std::string &variable, Information &)
	Return the value of the variable idenfified by `var`.

Public Member Functions inherited from XC::DistributedBase
	DistributedBase (void)
	Constructor.

virtual DbTagData &	getDbTagData (void) const
	Returns a vector to store class dbTags.

const int &	getDbTagDataPos (const int &i) const
	Returns the data at the i-th position.

void	setDbTagDataPos (const int &i, const int &v)
	Sets the data at the i-th position.

void	inicComm (const int &dataSize) const
	Initializes communication.

Protected Member Functions
virtual double	getDLambdaNewStep (void) const =0

virtual double	getDLambdaUpdate (void) const =0

int	sendData (CommParameters &)
	Send object members through the channel being passed as parameter.

int	recvData (const CommParameters &)
	Receives object members through the channel being passed as parameter.

	ProtoArcLength (AnalysisAggregation *, int classTag, double ArcLength)
	Constructor. More...

Protected Member Functions inherited from XC::StaticIntegrator
	StaticIntegrator (AnalysisAggregation *, int classTag)
	Constructor. More...

Protected Member Functions inherited from XC::IncrementalIntegrator
LinearSOE *	getLinearSOEPtr (void)
	Returns a pointer to the linear system of equations. More...

const LinearSOE *	getLinearSOEPtr (void) const
	Returns a pointer to the linear system of equations. More...

virtual int	formNodalUnbalance (void)
	Builds the nodal unbalanced load vector. More...

	IncrementalIntegrator (AnalysisAggregation *, int classTag)
	Constructor. More...

virtual int	formElementResidual (void)
	Builds the unbalanced load vector of the elements. More...

Protected Member Functions inherited from XC::Integrator
AnalysisAggregation *	getAnalysisAggregation (void)
	Returns a pointer to the solution method that owns this object.

const AnalysisAggregation *	getAnalysisAggregation (void) const
	Returns a const pointer to the solution method that owns this object.

void	applyLoadModel (double newTime)

int	updateModel (void)

int	updateModel (double newTime, double dT)

int	commitModel (void)

double	getCurrentModelTime (void)

void	setCurrentModelTime (const double &t)

void	setRayleighDampingFactors (const RayleighDampingFactors &rF)

int	sendData (CommParameters &)
	Send object members through the channel being passed as parameter.

int	recvData (const CommParameters &)
	Receives object members through the channel being passed as parameter.

virtual AnalysisModel *	getAnalysisModelPtr (void)
	Returns a pointer to the analysis model. More...

virtual const AnalysisModel *	getAnalysisModelPtr (void) const
	Returns a pointer to the analysis model. More...

	Integrator (AnalysisAggregation *, int classTag)
	Constructor. More...

virtual Integrator *	getCopy (void) const =0

Protected Attributes
double	arcLength2
	Squared value of the arc length.

IntegratorVectors	vectors

int	signLastDeltaLambdaStep

Protected Attributes inherited from XC::IncrementalIntegrator
int	statusFlag

Detailed Description

Base class for arc length integrators.

Constructor & Destructor Documentation

§ ProtoArcLength()

XC::ProtoArcLength::ProtoArcLength	(	AnalysisAggregation *	owr,
		int	classTag,
		double	arcLength
	)

protected

Constructor.

Parameters

owr	set of objects used to perform the analysis.
classTag	class identifier.
arcLength	value for the arc length.

Member Function Documentation

§ domainChanged()

int XC::ProtoArcLength::domainChanged ( void )

virtual

Response to a change in the domain.

The object creates the Vector objects it needs. Vectors are created to stor \( P\), \(\Delta Ub_n^{(i)}\), \(\Delta Uh_n^{(i)}\), \(\Delta //! Ub_n^{(i)}\), \(dU^{(i)}\). To form \( P\), the current load factor is obtained from the model, it is incremented by \(1.0\), {formUnbalance()} is invoked on the object, and the \(b\) vector is obtained from the linearSOE. This is \( P\), the load factor on the model is then decremented by \(1.0\).

Reimplemented from XC::Integrator.

§ newStep()

int XC::ProtoArcLength::newStep ( void )

virtual

Performs the first iteration, that is it solves for \(\lambda_n^{(1)}\) and \(\Delta U_n^{(1)}\) and updates the model with \(\Delta U_n^{(1)}\) and increments the load factor by \(\lambda_n^{(1)}\).

To do this it must set the rhs of the LinearSOE to \( P\), invoke formTangent() on itself and solve the LinearSOE to get \(\Delta Uh_n^{(1)}\).

Implements XC::StaticIntegrator.

§ recvSelf()

int XC::ProtoArcLength::recvSelf ( const CommParameters & cp )

virtual

Receive the object.

Each object has to receive the data needed to be able to recreate itself in the new process after it has been sent through cp. If the object is an aggregation containing other objects, new objects of the correct type can be constructed using #theBroker. To return 0 if successful or a -1 if not.

Implements XC::MovableObject.

§ sendSelf()

int XC::ProtoArcLength::sendSelf ( CommParameters & cp )

virtual

Send the object.

Each object has to send the data needed to be able to reproduce that object in a remote process. The object uses the methods provided by cp object to send the data to another channel at the remote actor, the address of the channel is set before this method is called. An object of similar type at the remote actor is invoked with a receiveSelf() to receive the data. Returns 0 if successful (successful in that the data got to the channel), or a - if no data was sent.

Implements XC::MovableObject.

§ update()

int XC::ProtoArcLength::update ( const Vector & dU )

virtual

Updates the model.

Note the argument \(\Delta U\) should be equal to \(\Delta Ub_n^{(i)}\). The object then determines \(\Delta Uh_n^{(i)}\) by setting the rhs of the linear system of equations to be \(\P\) and then solving the linearSOE. It then solves for \(\Delta \lambda_n^{(i)}\) and \(\Delta U_n^{(i)}\) and updates the model with \(\Delta U_n^{(i)}\) and increments the load factor by \(\Delta \lambda_n^{(i)}\). Sets the vector \(x\) in the LinearSOE object to be equal to \(\Delta U_n^{(i)}\) before returning (this is for the convergence test stuff.

Implements XC::IncrementalIntegrator.

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

src/solution/analysis/integrator/static/ProtoArcLength.h
src/solution/analysis/integrator/static/ProtoArcLength.cc

Public Member Functions

Protected Member Functions

Protected Attributes

Detailed Description

Constructor & Destructor Documentation

§ ProtoArcLength()

Member Function Documentation

§ domainChanged()

§ newStep()

§ recvSelf()

§ sendSelf()

§ update()