Accession Number : AD0769075

Title :   Dynamic Response of Cylindrical Shells in Bilinear Media: Axisymmetric Case.

Descriptive Note : Final rept. Apr 72-Feb 73,

Corporate Author : WEIDLINGER ASSOCIATES NEW YORK

Personal Author(s) : Matthews ,A. T. ; Bleich,H. H.

Report Date : 01 MAR 1973

Pagination or Media Count : 69

Abstract : An infinitely long cylindrical shell of nominal radius R0 (the target) is surrounded by a cylinder of a bilinear material of radius RL much greater than R0. The material behaves bilinearly in bulk but linearly in shear. The shell is treated as a linear oscillator of mass n per unit area and frequency omega. At a time t = 0, the outer surface of the material at RL is suddenly loaded by an axisymmetric pressure which decreases with time. The shock is followed to the target and the reflected shock is followed back to the outer surface RL. Interest is centered on the response of the target, so that the computation is stopped at the time that the reflected wave reaches RL. A pseudo - characteristic method is used for the computation. The results presented permit the independent checking of results from finite difference or finite element codes for the case of axisymmetric wave propagation. (Author)

Descriptors :   (*UNDERGROUND STRUCTURES, BLAST), CYLINDRICAL BODIES, SHELLS(STRUCTURAL FORMS), LOADS(FORCES), SHOCK WAVES, NUMERICAL ANALYSIS, NUCLEAR EXPLOSIONS

Subject Categories : Structural Engineering and Building Technology
      Explosions

Distribution Statement : APPROVED FOR PUBLIC RELEASE