摘要
本文提出一种非密接界面模型,其中两个弹性固体被一个粘性流体薄膜所分开.按照粘性流体的摩擦定律计算了边界摩擦力,最后得到小入射角p波或SV波的,以及任意入射角SH波的反射系数与透射系数.当粘滞系数趋于无穷时,粘性界面模型的反射系数与透射系数退化为密接界面的相应结果,粘性界面模型的一个特点是当上下弹性体具有相同的波阻抗时,反射系数可以不为零.
Abstract
One of the uncoupled boundary models has been suggested, in which two elastic solids are separated by a viscous fluid membrane. The fric-tional forces at boundary are calculated according to the law of friction of viscous fluid. Under small incident angle for P or SV wave and any incident angle for SH wave the reflection and transmission coefficients have been deduced, and they always degenerate to that of the coupled boundary model when viscous coefficient tends to infinite. It is of interest that the reflection coefficients can exist when the two elastic solids have the same impedance value for the viscous boundary model.
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