Approximate Theory for the Transverse Motion of a Two-Layered Plate. A Theoretical Model Applicable to Acoustic Scattering from Submerged Structures with Coating Layer(s).

Abstract

An approximate theory is developed for the transverse motion of a two-layered plate. The two layers are assumed to be elastic, isotropic, homogeneous, and welded to each other. The theory is similar to the Timoshenko-Mindlin model for a single-layered plate in which corrections are included for shear and rotary inerita. A single equation of transverse motion is derived that predicts the first four antisymmetric modes and is applicable to practical problems. Phase velocities of these modes are numerically analyzed for a plate consisting of a copper layer and a steel layer. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Mar 03, 1982
Accession Number
ADA117034

Entities

People

  • B. Q. Vu

Tags

Communities of Interest

  • Air Platforms
  • Weapons Technologies

DTIC Thesaurus Topics

  • Acoustic Scattering
  • Acoustic Waves
  • Acoustics
  • Doppler Effect
  • Elastic Properties
  • Equations
  • Equations Of Motion
  • Materials
  • Mechanical Waves
  • Modulus Of Elasticity
  • Phase Velocity
  • Rayleigh Waves
  • Shear Modulus
  • Target Strength
  • Two Dimensional
  • Wave Propagation
  • Waves

Fields of Study

  • Physics

Readers

  • Structural Dynamics.