Damage Study in Notched Particulate Composie Specimens Under Nonuniform Strain Loading

Abstract

This paper studied crack initiation in a hard particle reinforced composite with a soft rubber-like matrix material using a numerical technique. The numerical specimen considered had a semi-circular notch with a linearly varying length. The initial crack size occurring at the notch tip was modeled and predicted using a micro/macro-approach along with a damage model. A criterion to predict the initial crack size was proposed based on the size of a localized unstable material zone. Different notch sizes were compared to their initial crack sizes.

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1999
Accession Number
ADA408450

Entities

People

  • Chun Ting Liu
  • Y. W. Kwon

Organizations

  • Air Force Research Laboratory

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Air Force
  • Air Force Research Laboratories
  • Composite Materials
  • Composite Structures
  • Crack Tips
  • Elastic Properties
  • Finite Element Analysis
  • Materials
  • Materials Laboratories
  • Materials Science
  • Mechanical Properties
  • Mechanics
  • Micromechanics
  • Polymer Matrix Composites
  • Reinforced Plastics
  • Stresses
  • Three Dimensional

Fields of Study

  • Engineering

Readers

  • Finite Element Method (FEM) for solving Partial Differential Equations (PDEs)
  • Materials Science (Mechanical Engineering).
  • Structural Dynamics.