Effects of in-plane modes on the power flow characteristics in ship structures

Kessissoglou, N.J. (2002) Effects of in-plane modes on the power flow characteristics in ship structures. In: Proceedings of Annual Conference of the Australian Acoustical Society. pp. 433-442. From: Innovation in Acoustics and Vibration, 13-15 November 2002, Adelaide, Australia.

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The inclusion of the in-plane dynamic response in plate-like structures is of practical importance, since many structures consist of plates connected at inclined and right angles. It has been shown that in-plane vibration is significant in built-up structures such as ship hulls, as both the frequency increases, and the distance from the source to receiver increases through several intervening junctions 1-3. In this paper, the effect of in-plane waves on the power flow transmission in coupled plate structures is analytically investigated. An exact solution to describe the power flow transmission is presented, including flexural, in-plane longitudinal and in-plane shear waves. Numerical examples are given to display the time-averaged power flow characteristics associated with the built-up plates. The proposed method can calculate higher modes easily and efficiently to ensure convergence of solution, as well as taking into account variations in structural damping.

Item ID: 14632
Item Type: Conference Item (Research - E1)
ISBN: 978-0-909882-19-8
ISSN: 1446-0998
Keywords: bending vibration; in-plane vibration; ship structures; structure-borne noise; waveguide method
Date Deposited: 05 Nov 2017 22:56
FoR Codes: 09 ENGINEERING > 0913 Mechanical Engineering > 091399 Mechanical Engineering not elsewhere classified @ 51%
09 ENGINEERING > 0911 Maritime Engineering > 091105 Ship and Platform Structures @ 49%
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