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- W2377883371 abstract "Vibration mode shape description of a symmetrical structure using Zernike moment descriptor(ZMD) is introduced in this paper.The structural mode shapes can be decomposed as a line combination of a series of Zernike polynomials,with the feature of each Zernike polynomial reflecting a part of characteristic of mode shapes,based on Zernike moment transformation.The procedure to determine the number of Zernike polynomials for mode shape description is suggested.Meanwhile,the reconstruction of mode shapes with Zernike moment descriptor is carried out and its ability to filter the noise contaminated in the mode shapes is studied.The advantage of using Zernike moment descriptor to depict the mode shapes of a symmetric structure is verified by simulation with a disk structure as an example.The result demonstrates that the Zernike moment description of the mode shapes can be effectively describe the double modes in the symmetric structure and such a description has the ability to remove or significantly reduce the influence of noise in the mode shapes.Such feature shows a great practical value for further research on Finite Element model updating and validation of symmetric structures." @default.
- W2377883371 created "2016-06-24" @default.
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- W2377883371 date "2011-01-01" @default.
- W2377883371 modified "2023-09-23" @default.
- W2377883371 title "Mode shape description of a symmetrical structure using Zernike moment descriptor" @default.
- W2377883371 hasPublicationYear "2011" @default.
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