In this paper, an incompressible orthotropic plate is studied for the bounds of Rayleigh wave speed. A parameter “$a$” of elastic anisotropy, for all orthotropic materials, is defined. It is found that, for all materials with $-4<a<-1,$ we always have an upper bound for the Rayleigh velocity. In addition, for $-1<a<0,$ we have either an upper or a lower bound for speed, $c_R,$ of the Rayleigh wave.

中文翻译：

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不可压缩正交各向异性板中瑞利速度的界

本文研究了不可压缩的正交各向异性板的瑞利波速范围。参数“$\mathrm{一种}$对于所有正交各向异性材料，都定义了“弹性各向异性”。发现，对于所有具有$-4<\mathrm{一种}<-\mathrm{1个}，$我们总是有瑞利速度的上限。另外，对于$-\mathrm{1个}<\mathrm{一种}<0，$ 我们对速度有一个上限或下限， $C_{\mathrm{[R}}，$ 瑞利波。