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Erschienen in: Structural and Multidisciplinary Optimization 2/2011

01.08.2011 | Research Paper

Vibration reanalysis using frequency-shift combined approximations

verfasst von: Tao Xu, Guikai Guo, Hao Zhang

Erschienen in: Structural and Multidisciplinary Optimization | Ausgabe 2/2011

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Abstract

In the structural dynamic optimization procedure, many repeated analyses are conducted to evaluate vibration performance of successively modified structural designs. A new procedure for structural vibration (or eigenproblem) reanalysis is developed based on iteration and inverse iteration method with frequency-shift and linear combination acceleration to reduce the high computational cost of structure reanalysis. With a suitable frequency-shift factor, the Frequency-Shift Combined Approximations (FSCA) method allows to calculate higher modes accurately. Three numerical examples are presented to demonstrate the accuracy of the proposed method. Excellent results can be obtained in cases where large modifications are made and higher modes are needed.

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Metadaten
Titel
Vibration reanalysis using frequency-shift combined approximations
verfasst von
Tao Xu
Guikai Guo
Hao Zhang
Publikationsdatum
01.08.2011
Verlag
Springer-Verlag
Erschienen in
Structural and Multidisciplinary Optimization / Ausgabe 2/2011
Print ISSN: 1615-147X
Elektronische ISSN: 1615-1488
DOI
https://doi.org/10.1007/s00158-011-0624-0

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