Effects of Environment, and Damping and Coupling Properties of Composite Laminates on Panel Flutter.

Abstract

The dynamic response of composite materials has been investigated with the objective of assessing the influence of the geometry and the material variables upon the vibrational frequencies and dispersion characteristics in composite laminates. These studies are an essential first step in assessing the response of a structure subjected to more complex transient and aerodynamic loads which are frequently experienced in aerospace structures. A direct and important consequence of aerodynamic loading on structures is flutter, which can be defined as the dynamic instability of an elastic body in an airstream. A form of oscillatory instability which differs from the more conventional lifting surface flutter is panel flutter, which is the interaction between the missile or aircraft surface skin panel motions and aerodynamic forces in the supersonic regime.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1978
Accession Number
ADA055753

Entities

People

  • Sailendra N. Chatterjee
  • Satish V. Kulkarni

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies
  • Space

DTIC Thesaurus Topics

  • Bulk Modulus
  • Composite Materials
  • Differential Equations
  • Dynamic Response
  • Epoxy Laminates
  • Fiber Reinforced Composites
  • Fluid Dynamics
  • Graphitic Materials
  • Laminates
  • Materials Laboratories
  • Materials Processing
  • Materials Science
  • Materials Testing
  • Mechanical Properties
  • Mechanical Working
  • Mechanics
  • Temperature Gradients

Fields of Study

  • Physics

Readers

  • Aerospace Engineering
  • Fluid Mechanics and Fluid Dynamics.
  • Structural Health Monitoring of Composite Structures.

Technology Areas

  • Hypersonics
  • Space