Accession Number : AD0679638

Title :   EFFECTS NEAR THE SURFACE OF AN ELASTIC HALF-SPACE DUE TO A PRESSURE LOAD DECELERATING THROUGH SONIC SPEED.

Descriptive Note : Technical rept.,

Corporate Author : WEIDLINGER (PAUL) NEW YORK

Personal Author(s) : Friedman,M. B. ; Myers,M. K. ; Bleich,H. H.

Report Date : MAR 1968

Pagination or Media Count : 47

Abstract : Some unusual near surface effects due to air blasts on a solid half-space are studied by an analytic treatment of the stress field in an elastic half-space subjected to a two dimensional uniform pressure applied suddenly and permitted to expand with a linearly decreasing velocity from an initial supersonic velocity. A partial solution is obtained in closed form by asymptotic methods. The results indicate the presence of very large gradients of stress in the neighborhood of the surface of the half-space as the velocity of the surface pressure approaches and passes through the velocity of P-waves. (Author)

Descriptors :   (*SURFACES, MECHANICAL WAVES), (*BLAST, PROPAGATION), ELASTIC PROPERTIES, PRESSURE, LOADS(FORCES), DECELERATION, STRESSES, VELOCITY, TRANSONIC CHARACTERISTICS

Subject Categories : Explosions
      Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE