Analysis of Prolate Spheroidal Shell Under Undex Load

Abstract

This effort was an attempt to verify a newly developed closed-formed solution to the transient response of a submerged prolate spheroidal shell structure due to underwater explosive shock loading. Numerical solutions were attempted for three test cases ranging from a sphere to an elongated spheroidal shell approximating the shape of a submarine. Results for the spherical case were exactly the same as for the previously reported theory which is restricted to spheres. The results for the elongated spheroidal shells were in error, with the magnitude of the errors increasing as the amount of elongation increased. The errors appear to result from truncation of the infinite series solutions. As a result, useful results could not be obtained using currently reasonable computer resources.... Spheroidal Shell, Underwater Shock, Fluid-Solid Interaction, Undex Load, Shell Theory.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1992
Accession Number
ADA259433

Entities

People

  • David S. Nokes

Organizations

  • Charles Stark Draper Laboratory

Tags

Communities of Interest

  • Energy and Power Technologies
  • Ground and Sea Platforms
  • Weapons Technologies

DTIC Thesaurus Topics

  • Acoustic Waves
  • Aspect Ratio
  • Computers
  • Differential Equations
  • Engineering
  • Equations
  • Explosives
  • Frequency
  • Geometry
  • Infinite Series
  • Resonant Frequency
  • Shock Waves
  • Submarines
  • Symmetry
  • United States Strategic Command
  • Vibration
  • Wave Equations

Readers

  • Regression Analysis.
  • Structural Dynamics.