Loading of a Rigid Structure by an Underwater Explosion.
CALIFORNIA UNIV LOS ANGELES SCHOOL OF ENGINEERING AND APPLIED SCIENCE
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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
- Structural Engineering and Building Technology