Title of Paper:广义特征值问题的快速傅里叶变换法

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Date of Publication:2022-06-30

Journal:振动与冲击

Affiliation of Author(s):运载工程与力学学部

Issue:22

Page Number:67-71,77

ISSN No.:1000-3835

Abstract:For generalized eigenvalue problems,a method based on the fast Fourier transform (FFT) was developed.In the proposed method,the dynamical structural response was viewed as a signal containing all information about the vibrational frequencies.Using FFT to the signal,the vibrational frequencies can be obtained.The method is a kind of direct solution method which can compute all eigenvalues without the matrix inversion.A numerical example manifests the correctness of the proposed method.

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