LoadPath is an algorithmic class for performing a static analysis using a user defined load path (a user specified lambda path). More...

#include <LoadPath.h>

Inheritance diagram for XC::LoadPath:

Public Member Functions
int	newStep (void)
	The object obtains the current value of \(\lambda\) from the path vector using the current index. More...

int	update (const Vector &deltaU)
	Invoked this causes the object to first increment the DOF_Group displacements with \(\Delta U\), by invoking {incrDisp( \(\Delta U)\)}! on the AnalysisModel, and then to update the domain, by invoking {updateDomain()} on the AnalysisModel. More...

int	sendSelf (CommParameters &)
	Places the size if `path` and the index in an ID of size 5 and send this ID. More...

int	recvSelf (const CommParameters &)
	Receives in a ID of size 2 the size of the vector and current index. 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 int	domainChanged (void)
	Make required changes when a change in the domain occurs. More...

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
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. More...

	LoadPath (AnalysisAggregation *)
	Constructor. More...

	LoadPath (AnalysisAggregation *, const Vector &theLoadPath)
	Constructor. More...

Integrator *	getCopy (void) const
	Virtual constructor.

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...

Friends
class	AnalysisAggregation

Additional Inherited Members
Protected Attributes inherited from XC::IncrementalIntegrator
int	statusFlag

Detailed Description

LoadPath is an algorithmic class for performing a static analysis using a user defined load path (a user specified lambda path).

LoadPath is a subclass of StaticIntegrator, it is used to when performing a static analysis on the FE_Model using a user specified load path. The load path is specified in a Vector, {path}, to the objects constructor and at each step in the analysis: [ ^{(i)} - {n-1} = path(n) - path(n-1) ]

Knowing \(\lambda_n^{(i)} = path(n)\) prior to each iteration, the \(N+1\) unknowns in equation~staticFormTaylor}, is reduced to \(N\) unknowns and results in the following equation:

{equation} (U_{n}) = ^{(i)} P

{R}(U_{n}^{(i)} ) - ^{(i)} (U_{n} - U_{n}^{(i)}) {staticFormLoadPath} {equation}

Constructor & Destructor Documentation

§ LoadPath() [1/2]

XC::LoadPath::LoadPath ( AnalysisAggregation * owr )

protected

Constructor.

The integer INTEGRATOR_TAGS_LoadPath (defined in \(<\)classTags.h \(>\)) is passed to the StaticIntegrator classes constructor. No vector object is created. Provided for the FEM_ObjectBroker to create a blank object, recvSelf() should be invoked on this object.

§ LoadPath() [2/2]

XC::LoadPath::LoadPath	(	AnalysisAggregation *	owr,
		const Vector &	theLoadPath
	)

protected

Constructor.

The integer INTEGRATOR_TAGS_LoadPath (defined in \(<\)classTags.h \(>\)) is passed to the StaticIntegrator classes constructor. A vector object path is created which is a copy of loadPath and an index into this vector is set to \(0\).

Member Function Documentation

§ newStep()

int XC::LoadPath::newStep ( void )

virtual

The object obtains the current value of \(\lambda\) from the path vector using the current index.

The index is then incremented by \(1\). If the index is greater than the size of path, \(\lambda\) is set to \(0\) and an error message is printed. It will then invoke {applyLoadDomain(0.0, \(\lambda\))} on the AnalysisModel object. Returns \(0\) if successful. A warning message is printed and a \(-1\) is returned if no AnalysisModel is associated with the object.

Implements XC::StaticIntegrator.

§ recvData()

int XC::LoadPath::recvData ( const CommParameters & cp )

protected

Receives object members through the channel being passed as parameter.

§ recvSelf()

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

virtual

Receives in a ID of size 2 the size of the vector and current index.

Creates a new Vector and receives the Vector from the Channel. Returns \(0\) if successful, a warning message is printed and a \(-1\) is returned if theChannel fails to receive the Vector or the ID.

Implements XC::MovableObject.

§ sendSelf()

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

virtual

Places the size if path and the index in an ID of size 5 and send this ID.

Then sends the Vector path. Returns \(0\) if successful, a warning message is printed and a \(-1\) is returned if theChannel fails to send the ID or the Vector.

Implements XC::MovableObject.

§ update()

int XC::LoadPath::update ( const Vector & deltaU )

virtual

Invoked this causes the object to first increment the DOF_Group displacements with \(\Delta U\), by invoking {incrDisp( \(\Delta U)\)}! on the AnalysisModel, and then to update the domain, by invoking {updateDomain()} on the AnalysisModel.

Returns \(0\) if successful, a warning message and a \(-1\) is returned if no AnalysisModel is associated with the object.

Implements XC::IncrementalIntegrator.

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

src/solution/analysis/integrator/static/LoadPath.h
src/solution/analysis/integrator/static/LoadPath.cpp

Public Member Functions

Protected Member Functions

Friends

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

§ LoadPath() [1/2]

§ LoadPath() [2/2]

Member Function Documentation

§ newStep()

§ recvData()

§ recvSelf()

§ sendSelf()

§ update()