Progressive Failure Studies of Composite Panels with and without Cutouts

Abstract

Progressive failure analyses results are presented for composite panels with and without a cutout and subjected to in-plane shear loading and compression loading well into their postbuckling regime. Ply damage modes such as matrix cracking, fiber-matrix shear, and fiber failure are modeled by degrading the material properties. Results from finite element analyses are compared with experimental data. Good agreement between experimental data and numerical results are observed for most structural configurations when initial geometric imperfections are appropriately modeled.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 2001
Accession Number
ADA395951

Entities

People

  • Carlos G. Dávila
  • Damodar R. Ambur
  • Mark Hilburger
  • Navin Jaunky

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Composite Materials
  • Composite Structures
  • Compression
  • Computational Science
  • Delamination
  • Elastic Properties
  • Experimental Data
  • Failure Analysis
  • Failure Mode And Effect Analysis
  • Geometry
  • Laminates
  • Materials
  • Mechanical Properties
  • Mechanics
  • Shear Stresses
  • Stresses
  • Structural Mechanics

Fields of Study

  • Physics

Readers

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