Contact Law and Impact Responses of Laminated Composites.

Abstract

Static identation tests were performed to determine the law of contact between a steel ball and glass/epoxy and graphite/epoxy laminated composites. For both composites the power law with an index of 1.5 was found to be adequate for the loading curve. Substantial permanent deformations were noted after the unloading. A high order beam finite element was used to compute the dynamic contact force and response of the laminated composite subjected to the impact of an elastic sphere. This program can be used with either the classical Hertzian contact law or the measured contact law. A simple method has been introduced for estimating the contact force and contact duration in elastic impacts. (MM)

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Document Details

Document Type
Technical Report
Publication Date
Feb 01, 1980
Accession Number
ADA301575

Entities

People

  • Chintech Sun
  • S. H. Yang

Organizations

  • Purdue University

Tags

Communities of Interest

  • Energy and Power Technologies
  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Aeronautics
  • Air Force
  • Birds
  • Composite Materials
  • Computer Programs
  • Dynamic Response
  • Epoxy Composites
  • Epoxy Laminates
  • Jet Propulsion
  • Laminates
  • Materials
  • Materials Laboratories
  • Mechanics
  • Modulus Of Elasticity
  • Navy
  • Physics Laboratories
  • Resonant Frequency

Fields of Study

  • Materials science

Readers

  • Structural Dynamics.
  • Structural Health Monitoring of Composite Structures.