#include <subspaceit.h>

Inheritance diagram for oofem::SubspaceIteration:

Collaboration diagram for oofem::SubspaceIteration:

Public Member Functions
	SubspaceIteration (Domain d, EngngModel m)
virtual	~SubspaceIteration ()
ConvergedReason	solve (SparseMtrx &A, SparseMtrx &B, FloatArray &x, FloatMatrix &v, double rtol, int nroot) override
const char *	giveClassName () const override
Public Member Functions inherited from oofem::SparseGeneralEigenValueSystemNM
	SparseGeneralEigenValueSystemNM (Domain d, EngngModel m)
	Constructor.
virtual	~SparseGeneralEigenValueSystemNM ()
	Destructor.
std::string	errorInfo (const char *func)
Public Member Functions inherited from oofem::NumericalMethod
	NumericalMethod (Domain d, EngngModel m)
virtual	~NumericalMethod ()
	Destructor.
EngngModel *	giveEngngModel ()
virtual void	initializeFrom (InputRecord &ir)
virtual void	reinitialize ()
virtual void	setDomain (Domain *d)
virtual void	saveContext (DataStream &stream, ContextMode mode)
virtual void	restoreContext (DataStream &stream, ContextMode mode)

Private Attributes
int	nitem
	Max number of iterations.

Additional Inherited Members
Protected Attributes inherited from oofem::NumericalMethod
Domain *	domain
	Pointer to domain.
EngngModel *	engngModel
	Pointer to engineering model.

Detailed Description

This class implements the class NumericalMethod instance Subspace Iteration Eigen Value Problem Solver

DESCRIPTION : Perform solution of eigen value problem in the form K y = (omega)^2 M y

TASKS :

solving problem solveYourselfAt.
returning results (eigen values and associated eigen vectors).

Variable description :

 - - - INPUT  DATA - - -

 A(NWK)  -  STIFFNESS MATRIX
 B(NWM)  -  MASS MARTRIX
 NN  -      SIZE OF PROBLEM
 NNM  -  NN+1
 NROOT  -  REQUIRED NUMBER OF
 RTOL  -  KRITERIUM KONVERGENCE VLASTNICH CISEL
 NC  -  POCET VEKTORU SIMULTANNI ITERACE, DOPORUCUJE SE VOLIT
 NC = MIN (2*NROOT , NROOT+8 )
 NITEM  -  MAXIMALNI POCET ITERACI (OBYC. 16)

 - - - PRACOVNI POLE - - -

 TT(NN),W(NN),D(NC),RTOLV(NC),BUP(NC),BLO(NC),BUPC(NC)
 AR(NC,NC)  -  PRACOVNI MATICE - PROJEKCE MATICE  A
 BR(NC,NC)  -  PROJEKCE MATICE  B

 - - - VYSTUPNI DATA - - -

 EIGV(NROOT)  -  VLASTNI CISLA
 R(NN,NROOT)  -  VLASTNI VEKTORY

Definition at line 88 of file subspaceit.h.

Constructor & Destructor Documentation

◆ SubspaceIteration()

oofem::SubspaceIteration::SubspaceIteration	(	Domain *	d,
		EngngModel *	m )

Definition at line 50 of file subspaceit.C.

References nitem, and oofem::SparseGeneralEigenValueSystemNM::SparseGeneralEigenValueSystemNM().

◆ ~SubspaceIteration()

virtual oofem::SubspaceIteration::~SubspaceIteration ( )

inlinevirtual

Definition at line 96 of file subspaceit.h.

Member Function Documentation

◆ giveClassName()

const char * oofem::SubspaceIteration::giveClassName ( ) const

inlineoverridevirtual

Implements oofem::SparseGeneralEigenValueSystemNM.

Definition at line 99 of file subspaceit.h.

◆ solve()

ConvergedReason oofem::SubspaceIteration::solve	(	SparseMtrx &	A,
		SparseMtrx &	B,
		FloatArray &	x,
		FloatMatrix &	v,
		double	rtol,
		int	nroot )

overridevirtual

Solves the given sparse generalized eigen value system of equations \( Av = x^2 Bv \).

Parameters

A	coefficient matrix.
B	coefficient matrix.
v	eigen vector(s).
x	eigen value(s).
rtol	tolerance
nroot	number of required eigenvalues.

Returns: NM_Status value.

Implements oofem::SparseGeneralEigenValueSystemNM.

Definition at line 58 of file subspaceit.C.

References oofem::FloatArray::at(), oofem::FloatMatrix::at(), oofem::SparseMtrx::at(), oofem::SparseMtrx::backSubstitutionWith(), oofem::FloatArray::beColumnOf(), oofem::FloatMatrix::beInverseOf(), oofem::FloatArray::beProductOf(), oofem::CR_CONVERGED, oofem::CR_DIVERGED_ITS, oofem::CR_UNKNOWN, oofem::NumericalMethod::domain, oofem::NumericalMethod::engngModel, oofem::SparseMtrx::factorized(), oofem::GiveClassFactory(), oofem::SparseMtrx::giveNumberOfColumns(), oofem::min(), nitem, OOFEM_ERROR, OOFEM_LOG_INFO, OOFEM_WARNING, oofem::FloatArray::printYourself(), oofem::FloatMatrix::printYourself(), oofem::FloatArray::resize(), oofem::FloatMatrix::resize(), oofem::FloatMatrix::setColumn(), oofem::GJacobi::solve(), oofem::ST_Direct, oofem::FloatMatrix::symmetrized(), oofem::SparseMtrx::times(), oofem::FloatArray::zero(), and oofem::FloatMatrix::zero().

Member Data Documentation

◆ nitem

int oofem::SubspaceIteration::nitem

private

Max number of iterations.

Definition at line 92 of file subspaceit.h.

Referenced by solve(), and SubspaceIteration().

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

Public Member Functions

Private Attributes

Additional Inherited Members