Wave Attenuation in Damped Periodic Structures.

Abstract

It is known that periodic structures will act as filters for bending waves. The equations for an infinite ribbed bar have been published. The objective of this study is to get extensive quantitative results, both analytical and experimental, for a finite number of tuned ribs and to extend the work to plates and possibly shells. In the process, we intend also to investigate the differences between symmetric (two-sided) and asymmetric (one-sided) cantilever ribs. This first technical report gives analytical and experimental results for the uniform bar (unribbed) and for the same bar with fifteen pairs of tuned cantilevers which approximates the infinite ribbed bar.

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Document Details

Document Type
Technical Report
Publication Date
Jul 12, 1983
Accession Number
ADA133736

Entities

People

  • Ajit K. Roy
  • Robert Plunkett

Organizations

  • University of Minnesota

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies
  • Space

DTIC Thesaurus Topics

  • Analyzers
  • Differential Equations
  • Eigenvalues
  • Equations
  • Frequency
  • Group Velocity
  • Impact Point
  • Measurement
  • Phase Shift
  • Phase Velocity
  • Resonant Frequency
  • Spectrum Analyzers
  • Time Signals
  • Transfer Functions
  • Travel Time
  • Wave Propagation
  • Waves

Fields of Study

  • Physics

Readers

  • Calculus or Mathematical Analysis
  • Structural Dynamics.
  • Systems Analysis and Design