Micromechanics-Based Failure Model of Granular/Particulate Medium with Reinforcing Fibers.

Abstract

This research has focused on limit behavior of fiber composites with granular matrices (such as fiber reinforced soils). Dominant mechanisms of fiber matrix interaction were identified. Mathematical description of the behavior of granular composites on the macroscale was presented based on microstructural interactions. The concept of mathematical homogenization was introduced to represent the failure properties of the composite on the macroscale. Failure criteria for composites both with fibers in a preferred direction and with randomly distributed fibers were derived. A Laboratory technique was devised for preparation of the specimens of fiber reinforced composites. Experimental test were carried out, and the experimental evidence was collected for validation of the mathematical description. Implementation of the derived criteria in numerical methods for solving boundary value problems was presented.

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Document Details

Document Type
Technical Report
Publication Date
Apr 23, 1996
Accession Number
ADA310029

Entities

People

  • Radoslaw L. Michalowski

Organizations

  • Johns Hopkins University

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Boundary Value Problems
  • Composite Materials
  • Differential Equations
  • Elastic Properties
  • Equations
  • Failure Mode And Effect Analysis
  • Fiber Reinforced Composites
  • Materials
  • Materials Laboratories
  • Materials Science
  • Materials Testing
  • Mechanical Properties
  • Mechanics
  • Metal Matrix Composites
  • Micromechanics
  • Stress Strain Relations
  • Yield Strength

Readers

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