Surface acoustic waves of finite amplitude excited by a monochromatic line source
作者:
N. Kalyanasundaram,
G. V. Anand,
期刊:
The Journal of the Acoustical Society of America
(AIP Available online 1980)
卷期:
Volume 68,
issue 2
页码: 567-574
ISSN:0001-4966
年代: 1980
DOI:10.1121/1.384663
出版商: Acoustical Society of America
数据来源: AIP
摘要:
A technique for obtaining a uniformly valid solution to the problem of nonlinear propagation of surface acoustic waves excited by a monochromatic line source is presented. The method of solution is an extension of the method of strained coordinates wherein both the dependent and independent variables are expanded in perturbation series. A special transformation is proposed for the independent variables so as to make the expansions uniformly valid and also to satisfy all the boundary conditions. This perturbation procedure, carried out to the second order, yields a solution containing a second harmonic surface wave whose amplitude and phase exhibit an oscillatory variation along the direction of propagation. In addition, the solution also contains a second harmonic bulk wave of constant amplitude but varying phase propagating into the medium.
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