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An Interval Parameter Perturbation Method for Predicting the Natural Frequency Bounds of Intelligent Truss Structures with Uncertain-But-Bounded Parameters

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Abstract:

The upper and lower bound estimation of natural frequencies for intelligent truss structure with uncertain-but-bounded parameters is studied in this paper. Firstly, following the finite element method, the expressions of the interval stiffness and interval mass matrix of piezoelectric intelligent truss structures are derived directly from the interval parameters. Then, based on the matrix perturbation and interval extension theory, an interval parameter perturbation method is proposed for solving the upper and lower bound of natural frequencies. Finally, a 16-bar planar intelligent truss structure is used as an example to illustrate the applicability and validity of the presented method, and some useful conclusions are obtained.

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Periodical:

Key Engineering Materials (Volume 347)

Pages:

569-574

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.347.569

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Online since:

September 2007

Authors:

Wen Ying Chen, Fu Lei Chu, Shao Ze Yan, Ke Yun Wang

Keywords:

Intelligent Truss, Interval Parameter Perturbation, Uncertain-But-Bounded Parameters

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© 2007 Trans Tech Publications Ltd. All Rights Reserved

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