Damage Mechanics of Cross-Ply Laminates Resulting from Transverse Concentrated Loads

Abstract

An investigation was performed to study damage development in fiber- reinforced laminated composites induced by transverse concentrated loads. The major focus of the study was to understand fundamentally the damage mechanics in terms of matrix cracking and delamination growth, and the interaction between them resulting from a transverse concentrated load. The study was focused on cross-ply laminates only, and the load was introduced quasistatically through a cylindrical or spherical indenter. Accordingly, the research was divided into two stages,(1)damage induced by a cylindrical indenter and (2)damage induced by a spherical indenter. Analytical models consisting of a contact analysis and a failure analysis were developed for analyzing the damage initiation and growth induced by both loading conditions. Experiments were also performed to generate data needed for the models and to verify the proposed analyses. The predictions based on the models agreed very well with the data.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Sep 30, 1992
Accession Number
ADA259271

Entities

People

  • Fu-Kuo Chang
  • Sheng Liu

Organizations

  • Stanford University

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Composite Materials
  • Computational Fluid Dynamics
  • Coordinate Systems
  • Failure Analysis
  • Failure Mode And Effect Analysis
  • Finite Element Analysis
  • Fracture (Mechanics)
  • Geometry
  • Material Degradation Processes
  • Materials
  • Mechanics
  • Modulus Of Elasticity
  • Orientation (Direction)
  • Shear Modulus
  • Stress Analysis
  • Three Dimensional
  • Two Dimensional

Fields of Study

  • Physics

Readers

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