Acoustic Radiation and Scattering from Elastic Structures.

Abstract

This report presents a numerical technique for the linear dynamic analysis of a finite elastic structure immersed in an infinitie homogeneous acoustic medium. A finite element analysis of the structure is matched at the structure-fluid interface with an integral equation representation of the exterior acoustic field, leading to a coupled system of equations which may be cast in either acoustic or structural form. The former approach is preferred here for which numerical results are presented when the method is applied to plane wave scattering by thick and thin elastic spherical shells. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1978
Accession Number
ADA060840

Entities

People

  • D. T. Wilton

Organizations

  • Admiralty Underwater Weapons Establishment, Portland

Tags

Communities of Interest

  • Advanced Electronics
  • Air Platforms
  • Weapons Technologies

DTIC Thesaurus Topics

  • Acoustic Fields
  • Acoustic Waves
  • Acoustics
  • Boundaries
  • Boundary Value Problems
  • Computer Programs
  • Computers
  • Coordinate Systems
  • Differential Equations
  • Equations
  • Finite Element Analysis
  • Frequency
  • Integral Equations
  • Plane Waves
  • Radiation
  • Scattering
  • Waves

Fields of Study

  • Physics

Readers

  • Finite Element Method (FEM) for solving Partial Differential Equations (PDEs)
  • Thin Film Deposition Science.