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High Frequency, Periodic Disturbances in Dissipative Systems. I. Small Amplitude, Finite Rate Theory

B. R. Seymour and E. Varley
Proceedings of the Royal Society of London. Series A, Mathematical and Physical Sciences
Vol. 314, No. 1518 (Jan. 13, 1970), pp. 387-415
Published by: Royal Society
Stable URL: http://www.jstor.org/stable/2416481
Page Count: 29
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High Frequency, Periodic Disturbances in Dissipative Systems. I. Small Amplitude, Finite Rate Theory
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Abstract

A theory is developed describing finite amplitude, high frequency, periodic disturbances in dissipative systems. Although, for definiteness, the transmitting medium is taken to be a viscoelastic string, the results are applicable to nonlinear transmission lines and nonlinear dielectrics, as well as relaxing and reacting gas mixtures. Part I of the paper describes small amplitude but finite rate processes: part II will describe disturbances of unrestricted amplitude. It is shown that by interpreting high frequency waves as modulated simple waves with slowly changing Riemann invariants, the parameter expansion techniques of geometrical optics can be modified to include finite amplitude waves. The roles of the linear models of viscoelasticity and elasticity as well as that of nonlinear elasticity as approximations to the nonlinear viscoelastic model are elucidated.

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