The Effect of Nonlinearities on Flexible Composite Structures.

Abstract

The present report attempts to present a comprehensive review of achievements made under the support of AFOSR on the effect of nonlinearities on flexible composite structures. The research was focused on the mechanisms by which energy is transferred from high- to low-frequency modes. The report is focused on some recent experiments. conducted with the AFOSH support that reveal a perspective of the mechanisms by which energy is transferred from high- to low-frequency modes is presented. The focus is on some recent experiments that reveal how a low-amplitude high-frequency excitation can produce a large-amplitude low-frequency response. Such a phenomenon is potentially harmful, if not catastrophic. Specifically. these experiments clarify the role of internal resonances, combination external and parametric resonances, and the interactions among modes of widely spaced frequencies.

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Document Details

Document Type
Technical Report
Publication Date
Jul 07, 1995
Accession Number
ADA319911

Entities

People

  • Ali. H. Nayfeh
  • Dean T. Mook

Organizations

  • Virginia Tech

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Amplitude
  • Cantilever Beams
  • Composite Materials
  • Composite Structures
  • Differential Equations
  • Energy Transfer
  • Engineering
  • Equations
  • Flexible Structures
  • Frequency Response
  • Materials
  • Mechanics
  • Nonlinear Dynamics
  • Nonlinear Systems
  • Power Spectra
  • Resonance
  • Resonant Frequency

Readers

  • Atmospheric Science / Meteorology, specifically Wind Wave Turbulence.
  • Systems Analysis and Design
  • Technical Research and Report Writing.

Technology Areas

  • Space