Initial Impact Damage of Composites

Abstract

An analytical model is developed for predicting and studying the transient dynamic response of laminated composites during impact loading. In order to determine local stresses, the laminate is modeled as a number of substructures, each of which is representative of a smaller portion of the laminate. The reduced substructures are assembled in a manner analogous to classical finite elements. Good agreement was found between experimental and analytical contact force histories for 16 ply graphite/epoxy plates with aspect ratios less than 4.0. Less agreement was obtained for aspect ratios above 40. (js)

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1988
Accession Number
ADA229779

Entities

People

  • B. W. Rosen
  • Brian Coffenberry
  • Jonathan Goering

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Aspect Ratio
  • Composite Materials
  • Coordinate Systems
  • Dynamic Response
  • Equations Of Motion
  • Failure Analysis
  • Failure Mode And Effect Analysis
  • Geometry
  • Graphitic Materials
  • Laminates
  • Materials
  • Materials Laboratories
  • Materials Science
  • Mechanical Properties
  • Mechanics
  • Three Dimensional
  • Two Dimensional

Fields of Study

  • Physics

Readers

  • Computational Modeling and Simulation
  • Reinforced Composite Materials