Wave Propagation in Graphite/Epoxy Laminates Due to Impact.

Abstract

The low velocity impact response of graphite/epoxy laminates is investigated theoretically and experimentally. A 9-node isoparametric finite element in conjunction with an empirical contact law was used for the theoretical investigation. Flat laminates subjected to pendulum impact were used for the experimental investigation. Theoretical results are in good agreement with strain gage experimental data. The collective results of the investigation indicate that the theoretical procedure describes the impact response of the laminate up to about 150 in/sec. impact velocity.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1982
Accession Number
ADA305373

Entities

People

  • Chintech Sun
  • T. M. Tan

Organizations

  • Purdue University

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Composite Materials
  • Computational Science
  • Constitutive Equations
  • Differential Equations
  • Dynamic Response
  • Epoxy Laminates
  • Finite Element Analysis
  • Jet Propulsion
  • Laminates
  • Materials Laboratories
  • Mechanics
  • Modulus Of Elasticity
  • Shear Modulus
  • Strain Gages
  • Stress Waves
  • Two Dimensional
  • Wave Propagation

Fields of Study

  • Physics

Readers

  • Finite Element Method (FEM) for solving Partial Differential Equations (PDEs)
  • Mechanical Engineering/Mechanics of Materials.
  • Reinforced Composite Materials