✦ LIBER ✦

AN ASSESSMENT OF THE EFFECTS OF IN-PLANE VIBRATIONS ON THE ENERGY FLOW BETWEEN COUPLED PLATES

✍ Scribed by A.N. Bercin

Publisher: Elsevier Science
Year: 1996
Tongue: English
Weight: 482 KB
Volume: 191
Category: Article
ISSN: 0022-460X
DOI: 10.1006/jsvi.1996.0149

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✦ Synopsis

The majority of the studies of energy transmission in plate-type structures are based on the assumption that the main component of the energy transfer is due to flexural waves, and the contribution of in-plane waves may be neglected. In this study a systematic assessment of the effects and importance of in-plane vibrations has been made by using the dynamic stiffness technique which yields ''exact'' results for a certain class of structures. The method is also used as a ''bench-mark'' to assess the predictions of the statistical energy analysis (S.E.A.) approach and the wave intensity analysis (W.I.A.) approach. It is shown that the exclusion of in-plane modes may lead to sizeable errors in energy predictions unless the structure is very simple.

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