Calculation of surface wave motions due to a subsurface point force: an application of elastodynamic reciprocity
The elastodynamic reciprocity theorem for two time-harmonic elastodynamic states of the same body is used to determine the surface wave motions generated by a subsurface point load of arbitrary direction in an isotropic, homogeneous, elastic half-space. The actual surface wave motions due to the point load expressed in a suitably general form represent one of the states, while the other one is an appropriately selected auxiliary solution consisting of incoming and outgoing surface waves. A direct application of the reciprocity theorem yields the desired information on the generated surface wave motion.
Achenbach
JD
Center for Quality Engineering and Failure Prevention, Northwestern University, Evanston, Illinois 60208, USA. achenbach@nwu.edu