Progressive Failure Analysis of Plain Weaves Using Damage Mechanics Based Constitutive Laws

Abstract

The behavior of plain woven fabric composites is studied using three-dimensional finite elements which allows detailed modeling of the geometric complexities and spatial material variations within the fabric. Damages in the composite constituents viz. yarn and pure matrix are modeled on a continuum basis and related to their material constitutive behavior. The 3D constitutive laws describing pure matrix and yarn behavior are developed using a damage mechanics based approach with the dissipated energy density as the damage parameter. The strain energy dissipation (SED) concept is employed to describe the damage state and current stiffnesses of the weave constituents. A progressive failure analysis of plain woven fabrics subjected to tension and in-plane shear is carried out considering both geometric and material nonlinearities. The initiation and progression of damage within the fabric is investigated and the significant damage mechanisms outlined.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 2006
Accession Number
ADA449264

Entities

People

  • G. Flanagan
  • M. Kollegal
  • S. N. Chatterjee

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Composite Materials
  • Computational Fluid Dynamics
  • Elastic Properties
  • Failure Analysis
  • Failure Mode And Effect Analysis
  • Free Energy
  • Laminates
  • Materials
  • Materials Science
  • Mechanics
  • Modulus Of Elasticity
  • Nonlinear Analysis
  • Shear Modulus
  • Stress Strain Relations
  • Stresses
  • Three Dimensional

Fields of Study

  • Engineering

Readers

  • Finite Element Method (FEM) for solving Partial Differential Equations (PDEs)
  • Reinforced Composite Materials
  • Structural Health Monitoring of Composite Structures.