Energy Relations for Sh Waves Interacting with a Frictional Contact Interface
نویسنده
چکیده
INTRODUCTION The reflection and refraction of horizontally polarized shear (SH) waves by a frictional contact interface that can slip has been studied by the present authors [l-3] and Miller [4-6]. If the solids are sheared, the localized slip induced by the waves is more pronounced in one direction than in the other, which leads to the interesting phenomenon of the solids creeping with respect to each other in spite of the fact that no global slip takes place [l]. The applied shear tractions do work on the creeping motion, and it is pertinent to ask whether all of this work is dissipated by friction or, conceivably, some of it is transferred to the wave motion so that the reflected and refracted waves carry more energy than the incident wave.
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