✦ LIBER ✦

THE MEASUREMENT OF STRUCTURE-BORNE SOUND ENERGY FLOW IN AN ELASTIC CYLINDRICAL SHELL

✍ Scribed by R.S. MING; J. PAN; M.P. NORTON

Publisher: Elsevier Science
Year: 2001
Tongue: English
Weight: 354 KB
Volume: 242
Category: Article
ISSN: 0022-460X
DOI: 10.1006/jsvi.2000.3340

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✦ Synopsis

Structural waves in a cylindrical shell can be decomposed into di!erent circumferential modes. The energies carried by these modes usually need to be quanti"ed and ranked for the purposes of noise and vibration control. In this paper, a theoretical basis is outlined for a method to measure the energy #ow components of di!erent circumferential modes through a cross-section of a circular cylindrical shell. This new method has potential to measure energy #ow carried by higher order circumferential modes (n*3). Experimental results obtained on a thin-walled circular cylindrical shell show that this proposed method can be used to accurately measure the total energy #ow and its components.

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