TRANSIENT RESPONSE OF A RING-STIFFENED SPHERICAL SHELL IMMERSED IN AN ACOUSTIC MEDIUM.

Abstract

The transient response of a ring-stiffened spherical shell to a sudden pressure increase in the surrounding acoustic medium is investigated. A modal expansion approach is used to analyze the shell, while the acoustic field equation is solved by invoking the Helmholtz integral. Coupling of the two fields occurs through the enforcement of continuity of the velocity components at the shell-fluid interface. Two solutions to the same problem are obtained by using plane and cylindrical wave approximations of the acoustic field. These approximate solutions fail to predict the transient behavior for the shell configuration analyzed. The result of this study indicates that a large dynamic factor must be assumed in the design of submerged stiffened spherical shell structures, if explosive loads are likely to be encountered. (Author)

Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1969
Accession Number
AD0686157

Entities

People

  • Jerome M. Klosner
  • Yung Kia Lou

Organizations

  • New York University Tandon School of Engineering

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Acoustic Fields
  • Continuity
  • Couplings
  • Differential Equations
  • Equations
  • Explosives
  • Integrals
  • Mathematics
  • Partial Differential Equations

Fields of Study

  • Physics

Readers

  • Finite Element Method (FEM) for solving Partial Differential Equations (PDEs)
  • Structural Dynamics.