Multi-Scale Analysis of a 2/2-Twill Woven Fabric Composite

Abstract

A micro-mechanical unit-cell model was developed for 2/2-twill woven fabric composites. A multi-scale bi-directional micro/macro-mechanical analysis technique was applied to the model in an effort to estimate effective material properties of 2/2-twill composites and decompose the effective stresses (strains) of the woven fabric composite into the stresses (strains) of the lows. When this unit-cell model is incorporated into the multi-scale analysis by combining with previously developed modules, the residual strength and stiffness of a laminated structure made of 2/2-twill woven fabric composites can be predicted along with damage progression in the structure. Damage is described at the basic material units of the composite structure, the fibers and matrix. The unit-cell model and the multi-scale analysis were validated by comparing their predicted results to available data in open literature and data obtained from a finite element models.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Mar 01, 2002
Accession Number
ADA403560

Entities

People

  • Kevin K. Roach

Organizations

  • Naval Postgraduate School

Tags

Communities of Interest

  • Air Platforms
  • Biomedical

DTIC Thesaurus Topics

  • Composite Materials
  • Composite Structures
  • Coordinate Systems
  • Directional
  • Elastic Properties
  • Engineering
  • Failure Mode And Effect Analysis
  • Finite Element Analysis
  • Materials
  • Mechanical Engineering
  • Mechanical Properties
  • Mechanics
  • Modulus Of Elasticity
  • Stiffness
  • Stress Strain Relations
  • Three Dimensional
  • Two Dimensional

Fields of Study

  • Materials science

Readers

  • Computational Fluid Dynamics (CFD)
  • Computational Modeling and Simulation
  • Reinforced Composite Materials