
Accession Number : AD0679638
Title : EFFECTS NEAR THE SURFACE OF AN ELASTIC HALFSPACE 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 halfspace are studied by an analytic treatment of the stress field in an elastic halfspace 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 halfspace as the velocity of the surface pressure approaches and passes through the velocity of Pwaves. (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