Accession Number : ADA264987


Title :   Constrained-Layer Damping Analysis for Extensional Waves in Infinite, Fluid-Loaded Plates


Descriptive Note : Final rept.,


Corporate Author : NAVAL RESEARCH LAB ORLANDO FL UNDERWATER SOUND REFERENCE DETACHMENT


Personal Author(s) : Dubbelday, Pieter S


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a264987.pdf


Report Date : Apr 1993


Pagination or Media Count : 11


Abstract : This study concerns the mathematical analysis of constrained-layer damping of extensional waves in plates of infinite extent, with and without fluid loading. Previous work was mostly limited to flexural waves. Some aspects of fluid loading for flexural waves may be understood by means of thin-plate theory. Therefore, a similar theory was developed for extensional waves. The description and examples presented here are based on three models: The first is an extension of Kerwin's concepts, and the third used exact elasticity theory for all three layers. It is shown that the extended Kerwin model is useful in the design of constrained-layer damping for extensional waves as well as for flexural waves.... Constrained-layer damping, Extensional waves, Flexural waves, Fluid loading, Kerwin model.


Descriptors :   *LAYERS , *DAMPING , *PLATES , *FLUIDS , *WAVES , REPRINTS , ACOUSTIC WAVES , TIN , FLEXURAL PROPERTIES , MATHEMATICAL ANALYSIS , ELASTOMERS , ELASTIC PROPERTIES , THEORY , MODELS


Subject Categories : Acoustics
      Fluid Mechanics
      Mechanics


Distribution Statement : APPROVED FOR PUBLIC RELEASE