Stress Distribution and Material Characteristics of Composite Materials Under Oblique Loadings

Abstract

The critical loadings at failure of a unidirectional fibrous composite under any oblique loading are the most important results obtained in this work. For this purpose the von Mises energy criterion was applied to the components of the composite. Debonding failures at the interfaces were also considered. Other results of this research included composite elastic engineering constants in any angular direction as a function of fiber density and component properties. Diagrams are presented which exhibit the critical loading and the elastic coefficients of a series of composites as a function of the loading directions, component materials constants, and geometry. The fundamentals to this work are based on the micromechanical stress fields in the fibers and in the matrix.

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1970
Accession Number
AD0872814

Entities

People

  • Juan Haener
  • Ming-yuan Feng

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Army Aviation
  • Composite Materials
  • Computer Programs
  • Contracts
  • Coordinate Systems
  • Elastic Properties
  • Fiber Reinforced Composites
  • Materials Laboratories
  • Materials Science
  • Materials Testing
  • Mechanics
  • Modulus Of Elasticity
  • Orientation (Direction)
  • Reinforced Plastics
  • Shear Modulus
  • Tensile Strength
  • Two Dimensional

Fields of Study

  • Engineering
  • Materials science

Readers

  • Mechanical Engineering/Mechanics of Materials.
  • Reinforced Composite Materials