Effect of Initial Imperfections on the Response of Cylinders to Underwater Shock

Abstract

Presently, the United States Navy is searching for an improved method to predict the damage to a ship hull or underwater structure that results from an underwater explosion. One method of predicting this damage is through the use of nonlinear finite and boundary element analysis. Underwater Shock Analysis (USA) combined with VEC/DYNA3D is used for the analysis of the effect of explosive shock on numerical models. Initial imperfections are introduced in the numerical model using modal imperfections. The resulting numerical model is then subjected to a simulated underwater shock using the combined USA/DYNA3D code. A sensitivity analysis is performed to look into the details on the damage resulting from these simulations. Underwater shock, Initial imperfections

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Document Details

Document Type
Technical Report
Publication Date
Sep 30, 1993
Accession Number
ADA273879

Entities

People

  • D. T. Hooker
  • Y. S. Shin
  • Y. W. Kwon

Organizations

  • Naval Postgraduate School

Tags

Communities of Interest

  • Air Platforms
  • Counter IED
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Boundaries
  • Engineering
  • Explosions
  • Explosive Charges
  • Explosives
  • Finite Element Analysis
  • Generators
  • Materials
  • Mechanical Engineering
  • Mechanics
  • Numerical Analysis
  • Phase Shift
  • Shock Waves
  • Simulations
  • Three Dimensional
  • Two Dimensional
  • United States

Fields of Study

  • Physics

Readers

  • Acoustical Oceanography.
  • Computational Modeling and Simulation
  • Explosive Engineering.