日本音響学会誌
Online ISSN : 2432-2040
Print ISSN : 0369-4232
不均質弾性体表面層におけるLove波モードと幾何学的SH波の伝搬
石原 豊彦戸田 耕司
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ジャーナル フリー

1984 年 40 巻 12 号 p. 822-829

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Surface displacement excited by a SH wave sources in an inhomogeneous elastic medium is represented in alternative forms: 1) Love wave modes and a continuous spectrum, 2) geometrical SH waves (virtual waves) and an interference wave expressed in an integral form, and 3) geometrical SH waves and Love wave modes. Followings are discussed with numerical evaluation results : a) the accuracy and the physical interpretation of these representations, b) the interrelation between geometrical SH wave and Love wave modes, c) the influence of the SH wave source location on the amplitude of Love wave mode, d) interference regions in which the interference wave or lower order Love wave modes is (are) significant. The surface displacement is expressed by a few geometrical SH waves for sources in a deep location, and by the combination of a few geometrical SH waves and one or several Love wave mode(s) for shallow sources.

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© 1984 一般社団法人 日本音響学会
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