Accession Number : ADA134174

Title :   Use of Shear Lag for Composite Microstress Analysis - Linear Array.

Descriptive Note : Interim rept. Jan-Aug 83,

Corporate Author : CALIFORNIA UNIV LOS ANGELES SCHOOL OF ENGINEERING AND APPLIED SCIENCE

Personal Author(s) : Batdorf,S B ; Ko,Robert W C

PDF Url : ADA134174

Report Date : Jul 1983

Pagination or Media Count : 21

Abstract : The task of finding shear distributions on damaged composites analytically be means of the theory of elasticity is prohibitively difficult, so approximate techniques are generally employed. The most widely used is shear lag theory. This theory contains a parameter representing the shear coupling between fibers that has been difficult to evaluate in the past. The present paper evaluates this parameter for a linear array of fibers. In the limiting case of small fiber diameter to fiber spacing ratio and large matrix thickness to fiber diameter ratio an analytical solution is possible and is provided in this paper. For other geometries the solution is obtained experimentally. It is found the assumption usually made for the parameter is rather far off for most geometries of practical interest. (Author)

Descriptors :   *Fiber reinforced composites, *Failure(Mechanics), *Shear properties, Loads(Forces), Linear arrays, Shear stresses, Damage assessment, Microanalysis, Theory, Matrix materials, Strength(Mechanics), Linearity

Subject Categories : Laminates and Composite Materials
      Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE