Optimization of mid-frequency vibration for complex built-up systems using hybrid finite element–statistical energy analysis method

Gao, Ruxin, Zhang, Yahui and Kennedy, David ORCID: https://orcid.org/0000-0002-8837-7296 2020. Optimization of mid-frequency vibration for complex built-up systems using hybrid finite element–statistical energy analysis method. Engineering Optimization 52 (12) , pp. 2125-2145. 10.1080/0305215X.2019.1691546

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Abstract

This article deals with the sensitivity analysis of dynamic response and optimal size design of complex built-up systems in the mid-frequency range. A complex built-up system may be fabricated from many components which often differ greatly in materials and sizes. It may be subjected to many different wavelength structural deformations and may typically exhibit mixed mid-frequency behaviour which is very sensitive to uncertainties at higher frequencies. To perform optimization on the mid-frequency vibration of complex built-up systems, the hybrid finite element (FE)–statistical energy analysis (SEA) method, in which the deterministic and statistical subsystem are respectively modelled using FE and SEA, is implemented in this work. In this context, an efficient direct differentiation method for sensitivity analysis is derived. Two numerical examples illustrate the efficiency and effectiveness of the proposed optimization model.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Engineering
Publisher:	Taylor & Francis
ISSN:	0305-215X
Date of First Compliant Deposit:	11 November 2019
Date of Acceptance:	7 November 2019
Last Modified:	12 Nov 2024 19:15
URI:	https://orca.cardiff.ac.uk/id/eprint/126723

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