This class implements way for examining critical load of structure. More...

#include <linearstability.h>

Inheritance diagram for oofem::LinearStability:

Collaboration diagram for oofem::LinearStability:

Public Member Functions
	LinearStability (int i, EngngModel *_master=NULL)

virtual	~LinearStability ()

virtual void	solveYourself ()
	Starts solution process. More...

virtual void	solveYourselfAt (TimeStep *tStep)
	Solves problem for given time step. More...

virtual void	doStepOutput (TimeStep *tStep)
	Prints the ouput of the solution step (using virtual this->printOutputAtservice) to the stream detemined using this->giveOutputStream() method and calls exportModuleManager to do output. More...

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

void	terminateLinStatic (TimeStep *tStep)

int	requiresNewLsh ()

virtual void	updateYourself (TimeStep *tStep)
	Updates internal state after finishing time step. More...

virtual double	giveUnknownComponent (ValueModeType type, TimeStep tStep, Domain d, Dof *dof)
	Returns requested unknown. More...

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

virtual contextIOResultType	saveContext (DataStream &stream, ContextMode mode)
	Stores the state of model to output stream. More...

virtual contextIOResultType	restoreContext (DataStream &stream, ContextMode mode)
	Restores the state of model from output stream. More...

virtual TimeStep *	giveNextStep ()
	Returns next time step (next to current step) of receiver. More...

virtual double	giveEigenValue (int eigNum)
	Only relevant for eigen value analysis. Otherwise returns zero. More...

virtual void	setActiveVector (int i)
	Only relevant for eigen value analysis. Otherwise does noting. More...

virtual NumericalMethod *	giveNumericalMethod (MetaStep *mStep)
	Returns reference to receiver's numerical method. More...

SparseLinearSystemNM *	giveNumericalMethodForLinStaticProblem (TimeStep *tStep)

virtual const char *	giveInputRecordName () const

virtual const char *	giveClassName () const
	Returns class name of the receiver. More...

virtual fMode	giveFormulation ()
	Indicates type of non linear computation (total or updated formulation). More...

Public Member Functions inherited from oofem::StructuralEngngModel
	StructuralEngngModel (int i, EngngModel *_master=NULL)
	Creates new StructuralEngngModel with number i, associated to domain d. More...

virtual	~StructuralEngngModel ()
	Destructor. More...

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

void	computeReaction (FloatArray &answer, TimeStep *tStep, int di)
	Computes reaction forces. More...

virtual void	terminate (TimeStep *tStep)
	Terminates the solution of time step. More...

void	buildReactionTable (IntArray &restrDofMans, IntArray &restrDofs, IntArray &eqn, TimeStep *tStep, int di)
	Builds the reaction force table. More...

virtual void	showSparseMtrxStructure (int type, oofegGraphicContext &gc, TimeStep *tStep)
	Shows the sparse structure of required matrix, type == 1 stiffness. More...

Public Member Functions inherited from oofem::EngngModel
	EngngModel (int i, EngngModel *_master=NULL)
	Constructor. More...

virtual	~EngngModel ()
	Destructor. More...

	EngngModel (const EngngModel &)=delete

EngngModel &	operator= (const EngngModel &)=delete

Domain *	giveDomain (int n)
	Service for accessing particular problem domain. More...

void	setDomain (int i, Domain *ptr, bool iDeallocateOld=true)
	Sets i-th domain of receiver. More...

int	giveNumberOfDomains ()
	Returns number of domains in problem. More...

const std::string &	giveDescription () const

const time_t &	giveStartTime ()

bool	giveSuppressOutput () const

virtual ErrorEstimator *	giveDomainErrorEstimator (int n)
	Service for accessing ErrorEstimator corresponding to particular domain. More...

virtual MaterialInterface *	giveMaterialInterface (int n)
	Returns material interface representation for given domain. More...

void	setNumberOfEquations (int id, int neq)

FILE *	giveOutputStream ()
	Returns file descriptor of output file. More...

std::string	giveOutputBaseFileName ()
	Returns base output file name to which extensions, like .out .vtu .osf should be added. More...

std::string	giveReferenceFileName ()
	Returns reference file name. More...

void	letOutputBaseFileNameBe (const std::string &src)
	Sets the base output file name. More...

ContextOutputMode	giveContextOutputMode ()
	Returns domain context output mode. More...

int	giveContextOutputStep ()
	Returns domain context output step. More...

void	setContextOutputMode (ContextOutputMode contextMode)
	Sets context output mode of receiver. More...

void	setUDContextOutputMode (int cStep)
	Sets user defined context output mode (it sets contextOutputMode to contextOutputMode), setting contextOutputStep to given value. More...

void	setProblemMode (problemMode pmode)
	Sets domain mode to given mode. More...

void	setParallelMode (bool newParallelFlag)
	Sets the problem to run in parallel (or not). More...

problemMode	giveProblemMode ()
	Returns domain mode. More...

void	setProblemScale (problemScale pscale)
	Sets scale in multiscale simulation. More...

problemScale	giveProblemScale ()
	Returns scale in multiscale simulation. More...

virtual void	setRenumberFlag ()
	Sets the renumber flag to true. More...

virtual void	resetRenumberFlag ()
	Sets the renumber flag to false. More...

double	giveSolutionStepTime ()
	Returns the user time of the current simulation step in seconds. More...

void	giveAnalysisTime (int &rhrs, int &rmin, int &rsec, int &uhrs, int &umin, int &usec)
	Returns the real and user time for the analysis. More...

void	terminateAnalysis ()
	Performs analysis termination after finishing analysis. More...

void	saveStepContext (TimeStep *tStep, ContextMode mode)
	Saves context of given solution step, if required (determined using this->giveContextOutputMode() method). More...

virtual void	initializeYourself (TimeStep *tStep)
	Provides the opportunity to initialize state variables stored in element integration points according to initial conditions using function initializeYourself() on element level. More...

virtual int	initializeAdaptive (int tStepNumber)
	Initializes the newly generated discretization state according to previous solution. More...

virtual int	giveNumberOfDomainEquations (int di, const UnknownNumberingScheme &num)
	Returns number of equations for given domain in active (current time step) time step. More...

virtual FieldPtr	giveField (FieldType key, TimeStep *)
	Returns the smart pointer to requested field, Null otherwise. More...

EngngModel *	giveMasterEngngModel ()
	Returns the master engnmodel. More...

virtual double	giveLoadLevel ()
	Returns the current load level. More...

int	updateSharedDofManagers (FloatArray &answer, const UnknownNumberingScheme &s, int ExchangeTag)
	Exchanges necessary remote DofManagers data. More...

int	exchangeRemoteElementData (int ExchangeTag)
	Exchanges necessary remote element data with remote partitions. More...

virtual int	giveCurrentNumberOfIterations ()
	Returns number of iterations that was required to reach equilibrium - used for adaptive step length in staggered problem. More...

MPI_Comm	giveParallelComm ()
	Returns the communication object of reciever. More...

int	packRemoteElementData (ProcessCommunicator &processComm)
	Packs data of local element to be received by their remote counterpart on remote partitions. More...

int	unpackRemoteElementData (ProcessCommunicator &processComm)
	Unpacks data for remote elements (which are mirrors of remote partition's local elements). More...

int	packDofManagers (ArrayWithNumbering *src, ProcessCommunicator &processComm)
	Packing function for vector values of DofManagers. More...

int	unpackDofManagers (ArrayWithNumbering *dest, ProcessCommunicator &processComm)
	Unpacking function for vector values of DofManagers . More...

ProblemCommunicator *	giveProblemCommunicator (EngngModelCommType t)

void	initializeCommMaps (bool forceInit=false)

virtual int	instanciateYourself (DataReader &dr, InputRecord ir, const char outFileName, const char *desc)
	Initializes whole problem according to its description stored in inputStream. More...

void	Instanciate_init ()
	Initialization of the receiver state (opening the default output stream, empty domain creation, initialization of parallel context, etc) before Initialization form DataReader. More...

int	instanciateDomains (DataReader &dr)
	Instanciate problem domains by calling their instanciateYourself() service. More...

int	instanciateMetaSteps (DataReader &dr)
	Instanciate problem meta steps by calling their instanciateYourself() service. More...

virtual int	instanciateDefaultMetaStep (InputRecord *ir)
	Instanciate default metastep, if nmsteps is zero. More...

virtual void	updateAttributes (MetaStep *mStep)
	Update receiver attributes according to step metaStep attributes. More...

void	initMetaStepAttributes (MetaStep *mStep)
	Update e-model attributes attributes according to step metaStep attributes. More...

virtual void	updateDomainLinks ()
	Updates domain links after the domains of receiver have changed. More...

MetaStep *	giveCurrentMetaStep ()
	Returns current meta step. More...

virtual TimeStep *	giveCurrentStep (bool force=false)
	Returns current time step. More...

virtual TimeStep *	givePreviousStep (bool force=false)
	Returns previous time step. More...

TimeStep *	generateNextStep ()
	Generate new time step (and associate metastep). More...

virtual void	preInitializeNextStep ()
	Does a pre-initialization of the next time step (implement if necessarry) More...

virtual TimeStep *	giveSolutionStepWhenIcApply (bool force=false)
	Returns the solution step when Initial Conditions (IC) apply. More...

virtual int	giveNumberOfFirstStep (bool force=false)
	Returns number of first time step used by receiver. More...

int	giveNumberOfMetaSteps ()
	Return number of meta steps. More...

MetaStep *	giveMetaStep (int i)
	Returns the i-th meta step. More...

int	giveNumberOfSteps (bool force=false)
	Returns total number of steps. More...

virtual double	giveEndOfTimeOfInterest ()
	Returns end of time interest (time corresponding to end of time integration). More...

int	giveNumberOfTimeStepWhenIcApply ()
	Returns the time step number, when initial conditions should apply. More...

ExportModuleManager *	giveExportModuleManager ()
	Returns receiver's export module manager. More...

EngngModelTimer *	giveTimer ()
	Returns reference to receiver timer (EngngModelTimer). More...

virtual int	giveNewEquationNumber (int domain, DofIDItem)
	Increases number of equations of receiver's domain and returns newly created equation number. More...

virtual int	giveNewPrescribedEquationNumber (int domain, DofIDItem)
	Increases number of prescribed equations of receiver's domain and returns newly created equation number. More...

std::string	giveContextFileName (int tStepNumber, int stepVersion) const
	Returns the filename for the context file for the given step and version. More...

std::string	giveDomainFileName (int domainNum, int domainSerNum) const
	Returns the filename for the given domain (used by adaptivity and restore) More...

virtual void	updateComponent (TimeStep tStep, NumericalCmpn cmpn, Domain d)
	Updates components mapped to numerical method if necessary during solution process. More...

virtual void	initStepIncrements ()
	Initializes solution of new time step. More...

virtual int	forceEquationNumbering (int i)
	Forces equation renumbering on given domain. More...

virtual int	forceEquationNumbering ()
	Forces equation renumbering on all domains associated to engng model. More...

virtual int	requiresUnknownsDictionaryUpdate ()
	Indicates if EngngModel requires Dofs dictionaries to be updated. More...

virtual bool	requiresEquationRenumbering (TimeStep *tStep)
	Returns true if equation renumbering is required for given solution step. More...

virtual void	updateDofUnknownsDictionary (DofManager , TimeStep )
	Updates necessary values in Dofs unknown dictionaries. More...

virtual int	giveUnknownDictHashIndx (ValueModeType mode, TimeStep *tStep)
	This method is responsible for computing unique dictionary id (ie hash value) from given valueModeType and time step. More...

virtual ParallelContext *	giveParallelContext (int n)
	Returns the parallel context corresponding to given domain (n) and unknown type Default implementation returns i-th context from parallelContextList. More...

virtual void	initParallelContexts ()
	Creates parallel contexts. More...

virtual void	assemble (SparseMtrx &answer, TimeStep tStep, const MatrixAssembler &ma, const UnknownNumberingScheme &s, Domain domain)
	Assembles characteristic matrix of required type into given sparse matrix. More...

virtual void	assemble (SparseMtrx &answer, TimeStep tStep, const MatrixAssembler &ma, const UnknownNumberingScheme &r_s, const UnknownNumberingScheme &c_s, Domain domain)
	Assembles characteristic matrix of required type into given sparse matrix. More...

void	assembleVector (FloatArray &answer, TimeStep tStep, const VectorAssembler &va, ValueModeType mode, const UnknownNumberingScheme &s, Domain domain, FloatArray *eNorms=NULL)
	Assembles characteristic vector of required type from dofManagers, element, and active boundary conditions, into given vector. More...

void	assembleVectorFromDofManagers (FloatArray &answer, TimeStep tStep, const VectorAssembler &va, ValueModeType mode, const UnknownNumberingScheme &s, Domain domain, FloatArray *eNorms=NULL)
	Assembles characteristic vector of required type from dofManagers into given vector. More...

void	assembleVectorFromElements (FloatArray &answer, TimeStep tStep, const VectorAssembler &va, ValueModeType mode, const UnknownNumberingScheme &s, Domain domain, FloatArray *eNorms=NULL)
	Assembles characteristic vector of required type from elements into given vector. More...

void	assembleVectorFromBC (FloatArray &answer, TimeStep tStep, const VectorAssembler &va, ValueModeType mode, const UnknownNumberingScheme &s, Domain domain, FloatArray *eNorms=NULL)
	Assembles characteristic vector of required type from boundary conditions. More...

void	assembleExtrapolatedForces (FloatArray &answer, TimeStep tStep, CharType type, Domain domain)
	Assembles the extrapolated internal forces vector, useful for obtaining a good initial guess in nonlinear analysis with Dirichlet boundary conditions. More...

void	assemblePrescribedExtrapolatedForces (FloatArray &answer, TimeStep tStep, CharType type, Domain domain)

void	assembleVectorFromContacts (FloatArray &answer, TimeStep tStep, CharType type, ValueModeType mode, const UnknownNumberingScheme &s, Domain domain, FloatArray *eNorms=NULL)

virtual int	checkProblemConsistency ()
	Allows programmer to test problem its internal data, before computation begins. More...

virtual void	init ()
	Initializes the receiver state. More...

virtual void	postInitialize ()
	Performs post-initialization for all the problem contents (which is called after initializeFrom). More...

virtual void	printOutputAt (FILE file, TimeStep tStep, const IntArray &nodeSets, const IntArray &elementSets)

void	outputNodes (FILE file, Domain &domain, TimeStep tStep, int setNum)
	Outputs all nodes in the given set. More...

void	outputElements (FILE file, Domain &domain, TimeStep tStep, int setNum)
	Outputs all elements in the given set. More...

void	printYourself ()
	Prints state of receiver. Useful for debugging. More...

virtual void	printDofOutputAt (FILE stream, Dof iDof, TimeStep *tStep)
	DOF printing routine. More...

virtual int	useNonlocalStiffnessOption ()
	Returns nonzero if nonlocal stiffness option activated. More...

bool	isParallel () const
	Returns true if receiver in parallel mode. More...

int	giveRank () const
	Returns domain rank in a group of collaborating processes (0..groupSize-1) More...

int	giveNumberOfProcesses () const
	Returns the number of collaborating processes. More...

EngngModelContext *	giveContext ()
	Context requesting service. More...

virtual int	giveNumberOfSlaveProblems ()
	Returns number of slave problems. More...

virtual EngngModel *	giveSlaveProblem (int i)
	Returns i-th slave problem. More...

virtual bool	giveEquationScalingFlag ()
	Returns the Equation scaling flag, which is used to indicate that governing equation(s) are scaled, or non-dimensionalized. More...

virtual double	giveVariableScale (VarScaleType varId)
	Returns the scale factor for given variable type. More...

virtual int	estimateMaxPackSize (IntArray &commMap, DataStream &buff, int packUnpackType)
	Determines the space necessary for send/receive buffer. More...

virtual void	balanceLoad (TimeStep *tStep)
	Recovers the load balance between processors, if needed. More...

virtual LoadBalancer *	giveLoadBalancer ()
	Returns reference to receiver's load balancer. More...

virtual LoadBalancerMonitor *	giveLoadBalancerMonitor ()
	Returns reference to receiver's load balancer monitor. More...

void	initParallel ()
	Request domain rank and problem size. More...

EngngModel *	giveEngngModel ()
	Returns reference to itself -> required by communicator.h. More...

virtual bool	isElementActivated (int elemNum)

virtual bool	isElementActivated (Element *e)

virtual void	drawYourself (oofegGraphicContext &gc)

virtual void	drawElements (oofegGraphicContext &gc)

virtual void	drawNodes (oofegGraphicContext &gc)

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

Private Attributes
std::unique_ptr< SparseMtrx >	stiffnessMatrix

std::unique_ptr< SparseMtrx >	initialStressMatrix

FloatArray	loadVector

FloatArray	displacementVector

FloatMatrix	eigVec

FloatArray	eigVal

int	numberOfRequiredEigenValues

double	rtolv

GenEigvalSolverType	solverType
	Numerical method used to solve the problem. More...

std::unique_ptr< SparseGeneralEigenValueSystemNM >	nMethod

std::unique_ptr< SparseLinearSystemNM >	nMethodLS
	Numerical method used to solve the static problem. More...

Additional Inherited Members
Public Types inherited from oofem::EngngModel
enum	EngngModel_UpdateMode { EngngModel_Unknown_Mode, EngngModel_SUMM_Mode, EngngModel_SET_Mode }

enum	EngngModelCommType { PC_default, PC_nonlocal }

enum	InitialGuess { IG_None = 0, IG_Tangent = 1 }
	Means to choose methods for finding a good initial guess. More...

Protected Types inherited from oofem::EngngModel
enum	{ InternalForcesExchangeTag, MassExchangeTag, LoadExchangeTag, ReactionExchangeTag, RemoteElementExchangeTag }
	Message tags. More...

Protected Member Functions inherited from oofem::StructuralEngngModel
void	printReactionForces (TimeStep tStep, int id, FILE out)
	Computes and prints reaction forces, computed from nodal internal forces. More...

virtual void	computeExternalLoadReactionContribution (FloatArray &reactions, TimeStep *tStep, int di)
	Computes the contribution external loading to reaction forces in given domain. More...

virtual void	giveInternalForces (FloatArray &answer, bool normFlag, int di, TimeStep *tStep)
	Evaluates the nodal representation of internal forces by assembling contributions from individual elements. More...

void	updateInternalState (TimeStep *tStep)
	Updates nodal values (calls also this->updateDofUnknownsDictionary for updating dofs unknowns dictionaries if model supports changes of static system). More...

Protected Member Functions inherited from oofem::EngngModel
virtual void	packMigratingData (TimeStep *tStep)
	Packs receiver data when rebalancing load. More...

virtual void	unpackMigratingData (TimeStep *tStep)
	Unpacks receiver data when rebalancing load. More...

Protected Attributes inherited from oofem::StructuralEngngModel
StateCounterType	internalVarUpdateStamp
	Contains last time stamp of internal variable update. More...

FloatArray	internalForcesEBENorm
	Norm of nodal internal forces evaluated on element by element basis (squared) More...

Protected Attributes inherited from oofem::EngngModel
int	ndomains
	Number of receiver domains. More...

std::vector< std::unique_ptr< Domain > >	domainList
	List of problem domains. More...

int	numberOfSteps
	Total number of time steps. More...

int	numberOfEquations
	Total number of equation in current time step. More...

int	numberOfPrescribedEquations
	Total number or prescribed equations in current time step. More...

IntArray	domainNeqs
	Number of equations per domain. More...

IntArray	domainPrescribedNeqs
	Number of prescribed equations per domain. More...

bool	renumberFlag
	Renumbering flag (renumbers equations after each step, necessary if Dirichlet BCs change). More...

bool	profileOpt
	Profile optimized numbering flag (using Sloan's algorithm). More...

int	equationNumberingCompleted
	Equation numbering completed flag. More...

int	nMetaSteps
	Number of meta steps. More...

std::vector< MetaStep >	metaStepList
	List of problem metasteps. More...

std::unique_ptr< TimeStep >	stepWhenIcApply
	Solution step when IC (initial conditions) apply. More...

std::unique_ptr< TimeStep >	currentStep
	Current time step. More...

std::unique_ptr< TimeStep >	previousStep
	Previous time step. More...

int	number
	Receivers id. More...

std::string	dataOutputFileName
	Path to output stream. More...

std::string	coreOutputFileName
	String with core output file name. More...

FILE *	outputStream
	Output stream. More...

std::string	referenceFileName
	String with reference file name. More...

ContextOutputMode	contextOutputMode
	Domain context output mode. More...

int	contextOutputStep

ExportModuleManager *	exportModuleManager
	Export module manager. More...

InitModuleManager *	initModuleManager
	Initialization module manager. More...

problemMode	pMode
	Domain mode. More...

problemScale	pScale
	Multiscale mode. More...

time_t	startTime
	Solution start time. More...

EngngModel *	master
	Master e-model; if defined receiver is in maintained (slave) mode. More...

EngngModelContext *	context
	Context. More...

EngngModelTimer	timer
	E-model timer. More...

int	parallelFlag
	Flag indicating that the receiver runs in parallel. More...

enum fMode	nonLinFormulation
	Type of non linear formulation (total or updated formulation). More...

ErrorEstimator *	defaultErrEstimator
	Error estimator. Useful for adaptivity, or simply printing errors output. More...

int	rank
	Domain rank in a group of collaborating processes (0..groupSize-1). More...

int	numProcs
	Total number of collaborating processes. More...

int	nonlocalExt
	Flag indicating if nonlocal extension active, which will cause data to be sent between shared elements before computing the internal forces. More...

char	processor_name [PROCESSOR_NAME_LENGTH]
	Processor name. More...

MPI_Comm	comm
	Communication object for this engineering model. More...

CommunicatorBuff *	commBuff
	Common Communicator buffer. More...

ProblemCommunicator *	communicator
	Communicator. More...

ProblemCommunicator *	nonlocCommunicator
	NonLocal Communicator. Necessary when nonlocal constitutive models are used. More...

std::vector< ParallelContext >	parallelContextList
	List where parallel contexts are stored. More...

bool	suppressOutput
	Flag for suppressing output to file. More...

std::string	simulationDescription

LoadBalancer *	lb
	Load Balancer. More...

LoadBalancerMonitor *	lbm

bool	loadBalancingFlag
	If set to true, load balancing is active. More...

bool	force_load_rebalance_in_first_step
	Debug flag forcing load balancing after first step. More...

Detailed Description

This class implements way for examining critical load of structure.

Solution of this problem is base on equation in the form of: $K\cdot y=w (K_\sigma)y$ . Currently eigenvalue problem is solved using subspace iteration. The linear static solution, determining normal forces is done in time = 0.

Tasks:

Assembling the governing equation in the form.
Creating Numerical method for $K\cdot y=w(K_\sigma)y$ .
Interfacing Numerical method to Elements.

Definition at line 68 of file linearstability.h.

Constructor & Destructor Documentation

oofem::LinearStability::LinearStability	(	int	i,
		EngngModel *	_master = `NULL`
	)

inline

Definition at line 86 of file linearstability.h.

References oofem::EngngModel::ndomains, and oofem::EngngModel::numberOfSteps.

virtual oofem::LinearStability::~LinearStability ( )

inlinevirtual

Definition at line 92 of file linearstability.h.

References doStepOutput(), printOutputAt(), solveYourself(), solveYourselfAt(), and terminateLinStatic().

Member Function Documentation

void oofem::LinearStability::doStepOutput ( TimeStep * tStep )

virtual

Prints the ouput of the solution step (using virtual this->printOutputAtservice) to the stream detemined using this->giveOutputStream() method and calls exportModuleManager to do output.

Reimplemented from oofem::EngngModel.

Definition at line 343 of file linearstability.C.

References oofem::ExportModuleManager::doOutput(), oofem::EngngModel::exportModuleManager, oofem::Domain::giveDofManagers(), oofem::EngngModel::giveDomain(), oofem::EngngModel::giveOutputStream(), numberOfRequiredEigenValues, printOutputAt(), oofem::EngngModel::requiresUnknownsDictionaryUpdate(), oofem::TimeStep::setNumber(), oofem::TimeStep::setTime(), oofem::EngngModel::suppressOutput, and oofem::EngngModel::updateDofUnknownsDictionary().

Referenced by ~LinearStability().

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

inlinevirtual

Returns class name of the receiver.

Implements oofem::EngngModel.

Definition at line 123 of file linearstability.h.

virtual double oofem::LinearStability::giveEigenValue ( int eigNum )

inlinevirtual

Only relevant for eigen value analysis. Otherwise returns zero.

Reimplemented from oofem::EngngModel.

Definition at line 115 of file linearstability.h.

References oofem::FloatArray::at(), giveNumericalMethod(), giveNumericalMethodForLinStaticProblem(), and setActiveVector().

virtual fMode oofem::LinearStability::giveFormulation ( )

inlinevirtual

Indicates type of non linear computation (total or updated formulation).

This is used for example on Nodal level to update coordinates if updated formulation is done, or on element level, when non linear contributions are computed.

Reimplemented from oofem::EngngModel.

Definition at line 124 of file linearstability.h.

References oofem::TL.

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

inlinevirtual

Definition at line 122 of file linearstability.h.

References _IFT_LinearStability_Name.

TimeStep * oofem::LinearStability::giveNextStep ( )

virtual

Returns next time step (next to current step) of receiver.

Reimplemented from oofem::EngngModel.

Definition at line 158 of file linearstability.C.

References oofem::EngngModel::currentStep, oofem::EngngModel::giveNumberOfFirstStep(), and oofem::EngngModel::previousStep.

Referenced by requiresNewLsh(), and solveYourself().

NumericalMethod * oofem::LinearStability::giveNumericalMethod ( MetaStep * mStep )

virtual

Returns reference to receiver's numerical method.

Reimplemented from oofem::EngngModel.

Definition at line 60 of file linearstability.C.

References oofem::classFactory, oofem::ClassFactory::createGeneralizedEigenValueSolver(), nMethod, OOFEM_ERROR, and solverType.

Referenced by giveEigenValue(), and solveYourselfAt().

SparseLinearSystemNM * oofem::LinearStability::giveNumericalMethodForLinStaticProblem ( TimeStep * tStep )

Todo:: Support other solvers

Definition at line 72 of file linearstability.C.

References oofem::classFactory, oofem::ClassFactory::createSparseLinSolver(), nMethodLS, OOFEM_ERROR, and oofem::ST_Direct.

Referenced by giveEigenValue(), and solveYourselfAt().

double oofem::LinearStability::giveUnknownComponent	(	ValueModeType	,
		TimeStep *	,
		Domain *	,
		Dof *
	)

virtual

Returns requested unknown.

Unknown at give time step is characterized by its type and mode and by its equation number. This function is used by Dofs, when they are requested for their associated unknowns.

See also: Dof::giveUnknown

Reimplemented from oofem::EngngModel.

Definition at line 132 of file linearstability.C.

References oofem::Dof::__giveEquationNumber(), oofem::FloatArray::at(), oofem::FloatMatrix::at(), displacementVector, eigVec, oofem::TimeStep::giveTargetTime(), and OOFEM_ERROR.

Referenced by requiresNewLsh().

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

virtual

Initializes receiver according to object description in input reader.

InitString 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.

Reimplemented from oofem::EngngModel.

Definition at line 85 of file linearstability.C.

References _IFT_EngngModel_suppressOutput, _IFT_LinearStability_nroot, _IFT_LinearStability_rtolv, _IFT_LinearStability_stype, oofem::EngngModel::dataOutputFileName, oofem::InputRecord::hasField(), IR_GIVE_FIELD, IR_GIVE_OPTIONAL_FIELD, oofem::IRRT_OK, oofem::EngngModel::nMetaSteps, numberOfRequiredEigenValues, oofem::EngngModel::numberOfSteps, OOFEM_ERROR, oofem::EngngModel::outputStream, rtolv, oofem::EngngModel::simulationDescription, solverType, oofem::EngngModel::startTime, and oofem::EngngModel::suppressOutput.

Referenced by requiresNewLsh().

void oofem::LinearStability::printOutputAt	(	FILE *	file,
		TimeStep *	tStep
	)

virtual

Prints output of receiver to output domain stream, for given time step.

Corresponding function for element gauss points is invoked (gaussPoint::printOutputAt).

Reimplemented from oofem::StructuralEngngModel.

Definition at line 371 of file linearstability.C.

References oofem::FloatArray::at(), eigVal, oofem::Domain::giveDofManagers(), oofem::EngngModel::giveDomain(), oofem::Domain::giveElements(), oofem::Domain::giveOutputManager(), numberOfRequiredEigenValues, oofem::StructuralEngngModel::printReactionForces(), oofem::EngngModel::requiresUnknownsDictionaryUpdate(), oofem::TimeStep::setNumber(), oofem::TimeStep::setTime(), oofem::OutputManager::testTimeStepOutput(), and oofem::EngngModel::updateDofUnknownsDictionary().

Referenced by doStepOutput(), and ~LinearStability().

int oofem::LinearStability::requiresNewLsh ( )

inline

Definition at line 101 of file linearstability.h.

References giveNextStep(), giveUnknownComponent(), initializeFrom(), restoreContext(), saveContext(), and updateYourself().

contextIOResultType oofem::LinearStability::restoreContext	(	DataStream &	stream,
		ContextMode	mode
	)

virtual

Restores the state of model from output stream.

Restores not only the receiver state, but also same function is invoked for all DofManagers and Elements in associated domain. Note that by restoring element context also contexts of all associated integration points (and material statuses) are restored. Each context is associated with unique time step. Only one context per time step is allowed. Restore context function will restore such context, which is related (through its step number) to time step number and version given in obj parameter. Restoring context will change current time step in order to correspond to newly restored context.

Parameters

stream	Context file.
mode	Determines amount of info in stream.

Returns: contextIOResultType.

Exceptions

ContextIOERR exception if error encountered.

Reimplemented from oofem::EngngModel.

Definition at line 451 of file linearstability.C.

References oofem::CIO_OK, displacementVector, eigVal, eigVec, oofem::EngngModel::restoreContext(), oofem::FloatArray::restoreYourself(), oofem::FloatMatrix::restoreYourself(), and THROW_CIOERR.

Referenced by requiresNewLsh().

contextIOResultType oofem::LinearStability::saveContext	(	DataStream &	stream,
		ContextMode	mode
	)

virtual

Stores the state of model to output stream.

Stores not only the receiver state, but also same function is invoked for all DofManagers and Elements in associated domain. Note that by storing element context also contexts of all associated integration points (and material statuses) are stored.

Parameters

stream	Context stream.
mode	Determines amount of info in stream.

Returns: contextIOResultType.

Exceptions

ContextIOERR If error encountered.

Reimplemented from oofem::EngngModel.

Definition at line 427 of file linearstability.C.

References oofem::CIO_OK, displacementVector, eigVal, eigVec, oofem::EngngModel::saveContext(), oofem::FloatArray::storeYourself(), oofem::FloatMatrix::storeYourself(), and THROW_CIOERR.

Referenced by requiresNewLsh(), and terminateLinStatic().

void oofem::LinearStability::setActiveVector ( int i )

virtual

Only relevant for eigen value analysis. Otherwise does noting.

Reimplemented from oofem::EngngModel.

Definition at line 421 of file linearstability.C.

References oofem::EngngModel::giveCurrentStep(), and oofem::TimeStep::setTime().

Referenced by giveEigenValue().

void oofem::LinearStability::solveYourself ( )

virtual

Starts solution process.

Implementation should invoke for each time step solveYourselfAt function with time step as parameter. Time steps are created using giveNextStep function (this will set current time step to newly created, and updates previous step).

Reimplemented from oofem::EngngModel.

Definition at line 174 of file linearstability.C.

References oofem::EngngModelTimer::EMTT_AnalysisTimer, oofem::EngngModel::giveCurrentMetaStep(), oofem::EngngModel::giveCurrentStep(), giveNextStep(), solveYourselfAt(), oofem::EngngModelTimer::startTimer(), oofem::StructuralEngngModel::terminate(), oofem::EngngModel::timer, and oofem::EngngModel::updateAttributes().

Referenced by ~LinearStability().

void oofem::LinearStability::solveYourselfAt ( TimeStep * tStep )

virtual

Solves problem for given time step.

Should assemble characteristic matrices and vectors if necessary and solve problem using appropriate numerical method. After finishing solution, this->updateYourself function for updating solution state and then this->terminate function (for updating nodal and element values) should be called.

Todo:: Don't hardcode skyline matrix only

Reimplemented from oofem::EngngModel.

Definition at line 185 of file linearstability.C.

Referenced by solveYourself(), and ~LinearStability().

void oofem::LinearStability::terminateLinStatic ( TimeStep * tStep )

Definition at line 299 of file linearstability.C.

References oofem::COM_Always, oofem::COM_Required, oofem::COM_UserDefined, oofem::Domain::giveDofManagers(), oofem::EngngModel::giveDomain(), oofem::Domain::giveElements(), oofem::TimeStep::giveNumber(), oofem::Domain::giveNumberOfDofManagers(), oofem::Domain::giveNumberOfElements(), oofem::EngngModel::requiresUnknownsDictionaryUpdate(), saveContext(), oofem::TimeStep::setTime(), oofem::EngngModel::updateDofUnknownsDictionary(), and VERBOSE_PRINT0.

Referenced by solveYourselfAt(), and ~LinearStability().

void oofem::LinearStability::updateYourself ( TimeStep * tStep )

virtual

Updates internal state after finishing time step.

(for example total values may be updated according to previously solved increments). Then element values are also updated (together with related integration points and material statuses).

Reimplemented from oofem::StructuralEngngModel.

Definition at line 295 of file linearstability.C.

Referenced by requiresNewLsh().