Experimental and Numerical Investigations on Failure Mechanisms in Fiber-Reinforced Ceramics

Abstract

The primary focus on this research was to model the evolution of microcracks at the interfaces of grains and inclusions in quasibrittle materials. Several unique aspects have been developed as part of the research. These include the application of the material point method to a new class of problems and the formulation of a thermodynamically-based decohesion constitutive equation. In addition, numerical algorithms were formulated to handle three-dimensional problems, to include the effects of randomness of grain sizes and of the strength of cement paste, and to take into account boundary constraints. Each of these aspects represent new or extensive improvements to the approaches available at the time the research was initiated.

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Document Details

Document Type
Technical Report
Publication Date
Jan 29, 1999
Accession Number
ADA360445

Entities

People

  • H. L. Schreyer
  • M. L. Wang

Organizations

  • University of New Mexico

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Algorithms
  • Composite Materials
  • Computational Fluid Dynamics
  • Computational Science
  • Constitutive Equations
  • Elastic Properties
  • Equations
  • Failure Mode And Effect Analysis
  • Finite Element Analysis
  • Materials
  • Materials Engineering
  • Mechanical Properties
  • Mechanical Working
  • Mechanics
  • Modulus Of Elasticity
  • Numerical Analysis
  • Three Dimensional

Readers

  • Adaptive Control and Estimation with Uncertainty in Dynamic Systems.
  • Materials Science (Mechanical Engineering).
  • Reinforced Composite Materials