Transient Sound Radiation from Infinite Thin Plate,

Abstract

A Fortran program, written by A. G. P. Warham, for calculating the dynamics and acoustics for a thin plate, has been extended to include excitations other than the unit impulse. Numerical results of acoustic radiation demonstrate the usefulness of the program. In the acoustic far-field the transient sound radiation is better computed from a Fourier integral which can be interpreted in terms of drive point and surface radiation, and evaluated numerically by an application of the fast Fourier transform algorithm. Numerical examples are given using both 'thin' and 'thick' plate theories.

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1987
Accession Number
ADA188236

Entities

People

  • J. H. James

Organizations

  • Admiralty Research Establishment

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Computer Programs
  • Equations
  • Far Field
  • Fast Fourier Transforms
  • Frequency
  • Group Velocity
  • Integrals
  • Leading Edges
  • Measurement
  • Modulus Of Elasticity
  • Near Field
  • Radiation
  • Sine Waves
  • Steady State
  • Trailing Edges
  • Travel Time
  • Waves

Fields of Study

  • Physics

Readers

  • Computer Science.
  • Electromagnetic Wave Scattering and Antenna Radiation Engineering