Accession Number : AD0754103

Title :   Loading of a Rigid Structure by an Underwater Explosion.

Descriptive Note : Final rept.,

Corporate Author : CALIFORNIA UNIV LOS ANGELES SCHOOL OF ENGINEERING AND APPLIED SCIENCE

Personal Author(s) : Chen,Michael Hsiang-teh ; Collins,Richard

Report Date : NOV 1972

Pagination or Media Count : 41

Abstract : The problem of propagation of a two-dimensional shock wave in water over a submerged rigid structure (semi-cylinder) due to a nearby underwater explosion has been solved numerically using a method of characteristics based upon a curvilinear coordinate system fixed in successive shock wave positions. The particular form of the Tait equation of state for water leads to a relative insensitivity of peak pressures on the curved structure to local temperature stratification. Maximum surface pressures occur at the transition from irregular to regular reflexion, and nonlinear theory appears essential there, even for shocks of Mach number close to unity. Results are given for a range of explosive strengths, distances from the structure, and structural dimensions. (Author)

Descriptors :   (*UNDERWATER EXPLOSIONS, LOADS(FORCES)), (*SHELLS(STRUCTURAL FORMS), UNDERWATER), DETONATION WAVES, DAMAGE ASSESSMENT, FLOW FIELDS, PROPAGATION, PRESSURE, NUMERICAL ANALYSIS

Subject Categories : Structural Engineering and Building Technology
      Explosions

Distribution Statement : APPROVED FOR PUBLIC RELEASE