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Wave transmission characteristics for higher-order sandwich panel with flexible core using time-domain spectral element method

Sekhar, B Raja and Gopalakrishnan, S and Murthy, M V V S (2017) Wave transmission characteristics for higher-order sandwich panel with flexible core using time-domain spectral element method. In: JOURNAL OF SANDWICH STRUCTURES & MATERIALS, 19 (3). pp. 364-393.

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Official URL: http://dx.doi.org/10.1177/1099636216664536

Abstract

A new time-domain spectral element with nine degrees of freedom per node is formulated based on higher-order sandwich panel theory, incorporating the flexible behaviour of the core with composite face sheets. Static, free vibrations and wave propagation analysis are carried out using the formulated element. Results obtained using this element are compared with those available in the literature and with commercial finite element codes. The fast convergence of the spectral element method is demonstrated by solving the high-frequency wave propagation problem. A method of computing the wave characteristics, namely wavenumbers and group velocities, in a higher-order sandwich panel is developed using the formulated element. The effect of core damping is studied in detail with different core types, which can be used effectively in sandwich beam design.

Item Type: Journal Article
Additional Information: Copy right for this article belongs to the SAGE PUBLICATIONS LTD, 1 OLIVERS YARD, 55 CITY ROAD, LONDON EC1Y 1SP, ENGLAND
Department/Centre: Division of Mechanical Sciences > Aerospace Engineering(Formerly Aeronautical Engineering)
Depositing User: Id for Latest eprints
Date Deposited: 03 Jun 2017 09:37
Last Modified: 03 Jun 2017 09:37
URI: http://eprints.iisc.ac.in/id/eprint/57097

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