SURFACE DYNAMIC-RESPONSE FUNCTIONS OF ANISOTROPIC SOLIDS

An integral expression is established for the surface displacement res ponse tensor of a semi-infinite anisotropic elastic continuum to sudde n loading at a point on the surface. The expression is numerically eva luated for normal force and displacement in a number of directions in the Cu (001) surface, and the results compared with waveforms measured in a copper single crystal. The predicted singularities associated wi th bulk and surface wave arrivals are clearly observed. Because of fol ding of the Rayleigh wave group velocity curve, there are multiple sur face wave arrivals in some directions. Near the [110] direction the re sponse is dominated by a pseudo surface wave resonance. (C) 1998 Elsev ier Science B.V.