Development of a Finite Element Model for the Class 4 Flextensional Underwater Transducer Shell

Abstract

A finite element model is developed for the Class IV flextensional underwater transducer shell. The stiffness and mass matrices for a finite cylindrical type shell element of linearly varying radius of curvature are presented. The element has 36 degrees of freedom corresponding to the nine generalized coordinates at each node. All six rigid body modes for the element are adequately represented by this model. The element is used to predict the free vibrations for the Class IV flextensional underwater transducer shell, and the results are verified experimentally.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1972
Accession Number
AD0748187

Entities

People

  • George Georgopoulos
  • Larry H. Royster

Organizations

  • North Carolina State University

Tags

Communities of Interest

  • Space

DTIC Thesaurus Topics

  • Commerce
  • Continuum Mechanics
  • Contractors
  • Curvature
  • Digital Computers
  • Displacement
  • Eigenvalues
  • Equations
  • Frequency
  • Geometry
  • North Carolina
  • Resonant Frequency
  • Shape
  • Stiffness
  • Transducers
  • Vibration

Fields of Study

  • Physics

Readers

  • Acoustical Oceanography.
  • Finite Element Method (FEM) for solving Partial Differential Equations (PDEs)