Description

Base interface class for eigensolvers for the undamped constrained generalized problem (-wsquare*M + K)*x = 0 s.t.

Cq*x = 0 Children classes can implement this in different ways, overridding Solve()

#include <ChEigenvalueSolver.h>

Inheritance diagram for chrono::modal::ChGeneralizedEigenvalueSolver:

Public Member Functions
virtual bool	Solve (const ChSparseMatrix &M, const ChSparseMatrix &K, const ChSparseMatrix &Cq, ChMatrixDynamic< std::complex< double >> &V, ChVectorDynamic< std::complex< double >> &eig, ChVectorDynamic< double > &freq, ChEigenvalueSolverSettings settings=0) const =0
	Solve the constrained eigenvalue problem (-wsquareM + K)x = 0 s.t. More...

Member Function Documentation

virtual bool chrono::modal::ChGeneralizedEigenvalueSolver::Solve	(	const ChSparseMatrix &	M,
		const ChSparseMatrix &	K,
		const ChSparseMatrix &	Cq,
		ChMatrixDynamic< std::complex< double >> &	V,
		ChVectorDynamic< std::complex< double >> &	eig,
		ChVectorDynamic< double > &	freq,
		ChEigenvalueSolverSettings	settings = `0`
	)		const

pure virtual

Solve the constrained eigenvalue problem (-wsquare*M + K)*x = 0 s.t.

Cq*x = 0 If n_modes=0, return all eigenvalues, otherwise only the first lower n_modes.

Parameters

M	input M matrix, n_v x n_v
K	input K matrix, n_v x n_v
Cq	input Cq matrix of constraint jacobians, n_c x n_v
V	output matrix n x n_v with eigenvectors as columns, will be resized
eig	output vector with n eigenvalues, will be resized.
freq	output vector with n frequencies [Hz], as f=w/(2*PI), will be resized.
settings	optional: settings for the solver, or n. of desired lower eigenvalues. If =0, return all eigenvalues.

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