Statistical energy analysis for vibro-acoustic coupled system with fuzzy parameters

Yue Wang (R&D Center, China Academy of Launch Vehicle Technology, Beijing, China)
Di Wu (R&D Center, China Academy of Launch Vehicle Technology, Beijing, China)
Lei Wang (School of Aeronautic Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing, China)
Xiaojun Wang (School of Aeronautic Science and Engineering, Beijing University of Aeronautics and Astronautics, Beijing, China)

Engineering Computations

ISSN: 0264-4401

Publication date: 16 April 2018

Abstract

Purpose

This paper aims to propose a novel statistic energy analysis method with fuzzy parameters to study the dynamic and acoustic responses of coupled system with fuzzy parameters, which can expand the applied range of statistic energy analysis method in engineering to some extent.

Design/methodology/approach

On the basis of the property of membership level, the uncertain fuzzy parameters are expressed as the interval forms. Interval mathematics and interval expansion principle are adopted to solve the problem with interval parameters. At last, two numerical examples, which include a two-plate coupled system and a single-partition sound-insulation system, are carried out to demonstrate the feasibility and validity of the presented method.

Findings

Interval mathematics and interval expansion principle are adopted to solve the problem with interval parameters.

Originality/value

By integrating the interval analysis, optimization technique and Taylor expansion method, two non-probabilistic, set-theoretical statistical energy analyses are proposed for predicting the dynamical and acoustical response of the complex coupled system with uncertain parameters in high-frequency domain.

Keywords

Citation

Wang, Y., Wu, D., Wang, L. and Wang, X. (2018), "Statistical energy analysis for vibro-acoustic coupled system with fuzzy parameters", Engineering Computations, Vol. 35 No. 2, pp. 565-579. https://doi.org/10.1108/EC-11-2016-0386

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Publisher

:

Emerald Publishing Limited

Copyright © 2018, Emerald Publishing Limited

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