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Natural frequencies and damping estimation using wavelet transform of a frequency response function

✍ Scribed by H.P. Yin; D. Duhamel; P. Argoul


Publisher
Elsevier Science
Year
2004
Tongue
English
Weight
187 KB
Volume
271
Category
Article
ISSN
0022-460X

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πŸ“œ SIMILAR VOLUMES


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The wavelet transform is used as a time-frequency representation for system identification purposes. It is shown that wavelet analysis of the free response of a system allows the estimation of the natural frequencies and viscous damping ratios. The advantages of the wavelet transform in the analysis

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An estimation strategy for extraction of isotropic material damping is presented. The method is based on a modal receptance model, material damping functions and experimentally measured frequency response functions (FRF). Least-squares estimation of modal parameters is done by projections of the mea

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Given that a non-linear system consists of a series of point masses connected by springs and dampers which have polynomial force characteristics, the Fourier transform of the first order Volterra kernel between input force and the resulting motion is determined from the mass matrix and the stiffness