Accession Number : AD0423220

Title :   STUDIES ON THE PROPAGATION OF ELASTIC WAVES IN SOLID MEDIA,

Corporate Author : CALIFORNIA INST OF TECH PASADENA

Personal Author(s) : Grimes,Charles Kenneth

Report Date : 1944

Pagination or Media Count : 166

Abstract : Stress and displacement correction terms resulting from application of a subsonically moving point load to the free surface of the infinite half-space are obtained using Fourier transform techniques (the load moves subsonically with respect to the longitudinal and transverse wave speeds). It is shown, for the supersonically travelling point load, that the solution is given, in the limit as the load velocity becomes large, by the well known solution of Sauter for the impulsive point load. Analytic function theory is used to predict the existence of Rayleigh waves on the free surface of the infinite half-space and Stoneley waves along the welded interface between two dissimilar solid media. A brief analysis shows that free-running waves are also possible on the interior surface of an infinitely long cylindrical cavity. These waves are dispersive, however, because of the introduction of a characteristic length. (Author)

Descriptors :   (*MECHANICAL WAVES, PROPAGATION), (*STRESSES, ELASTIC PROPERTIES), STRAIN (MECHANICS), CYLINDRICAL BODIES, SCATTERING, NUMERICAL METHODS AND PROCEDURES

Distribution Statement : APPROVED FOR PUBLIC RELEASE