THE VIBRATION OF A SANDWICH PLATE WITH INTERNAL DAMPING, RADIATING INTO A FLUID MEDIUM ON ONE SIDE,

Abstract

A theory is developed for the vibration analysis of an infinitely long sandwich plate whose facings and core both have linear damping properties. The plate is simply supported along its two edges. Solutions are obtained for the plate vibrating in vacuo and also for the plate radiating waves into a fluid medium which exists on one side. Expressions are derived for the natural frequencies and the steady state response for both cases.To facilitate use of the theory for practical problems, a calculation procedure is given. Numerical results are presented for both a lightly damped and a highly damped plate. The former is a conventional honeycomb sandwich plate, the latter a sandwich plate with the same dimensions and facings but with a rubberized, dissipative core. Replacement of the honeycomb core with the dissipative core of equal weight reduces the midspan deflection (and stress) at resonance by about two orders of magnitude. (Author)

Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1964
Accession Number
AD0431932

Entities

People

  • Irving W. Jones
  • V. L. Salerno

Tags

DTIC Thesaurus Topics

  • Deflection
  • Dynamic Response
  • Frequency
  • Frequency Shift
  • Honeycomb Cores
  • Mechanical Waves
  • Modal Analysis
  • Resonance
  • Resonant Frequency
  • Steady State
  • Vibration
  • Waves

Fields of Study

  • Physics

Readers

  • Structural Dynamics.