Accession Number : AD0881621

Title :   Stress Wave Propagation in Multilayered Axisymmetric Bodies of Varying Area,

Corporate Author : NAVAL ORDNANCE LAB WHITE OAK MD

Personal Author(s) : Yang, Jackson C. S. ; Hassett, Robert J.

Report Date : 08 DEC 1970

Pagination or Media Count : 36

Abstract : In the investigation of phenomena associated with the development of modern naval weapons, a particular problem is in the design of weapons that can withstand the impact shock of high-speed water entry and ice penetration. The purpose of this report is to report on an experimental and theoretical investigation of one-dimensional stress wave propagation in multilayered axisymmetric bodies of varying area representing shapes found in water-entry missiles and mines. An experimental investigation of elastic waves produced by the axial collision of strikers with truncated 7075 aluminum cones and conical shells with a half angle of five degrees was performed using an air gun. Strain distribution along the five-degree conical specimens was obtained by strain gages mounted on the specimen. The method of characteristics was utilized in the theoretical analysis of the propagation of elastic stress waves. Procedures of numerical integration along the characteristic directions are established and carried out for all the experimentally tested cases on a digital computer. Good agreement between the data and the results of calculations based on the analysis was obtained. (Author)

Descriptors :   , (*IMPACT SHOCK, EQUATIONS OF MOTION), (*ORDNANCE, WATER ENTRY), LOADS(FORCES), STRESSES, WAVE PROPAGATION, NAVAL MINES, GUIDED MISSILES, STRAIN(MECHANICS), COMPUTER PROGRAMS.

Subject Categories : Ammunition and Explosives
      Armor
      Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE