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:

1968-03-01

Pagination or Media Count:

47.0

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