학술논문

Two-component periodic layered structures for elastic wave attenuation.
Document Type
Article
Source
Waves in Random & Complex Media. Nov2006, Vol. 16 Issue 4, p457-471. 15p. 2 Diagrams, 2 Charts, 5 Graphs.
Subject
*ELASTIC waves
*ATTENUATION (Physics)
*CHEBYSHEV polynomials
*TRANSMISSOMETERS
*ELECTRIC impedance
Language
ISSN
1745-5030
Abstract
Using remarkable properties of Chebyshev polynomials and assumptions concerning impedances of input media, output media and layers, a special approximation for the normalized transmittance of two-component periodic layered structures is derived. This approximation allows predicting attenuation properties of such structures in a rather wide spectral region. Analytical formulas enabling estimations of positions of transmittance maxima and the low-frequency boundary of attenuation spectral region are obtained. One of the applications of the results of this paper might be in the protection of human body against blasts.2000 Mathematics Subject Classifications: 74J05; 74K35 [ABSTRACT FROM AUTHOR]