Accession Number : ADA307228

Title :   A Semi-Atomistic Model for Flaw-Induced Fracture in Non-Ductile Materials.

Descriptive Note : Contractor rept.,

Corporate Author : ASTRO RESEARCH CORP CARPINTERIA CA

Personal Author(s) : Schuerch, H.

PDF Url : ADA307228

Report Date : MAY 1966

Pagination or Media Count : 32

Abstract : A semi-atomistic model is proposed for the non-ductile failure of materials based upon an analysis of static and dynamic stress concentrations in uniaxial fiber matrix composite materials. In this model the finite spacing of bonds is accounted for in the direction of a crack or flaw, while the material is considered as continuous in the perpendicular direction. An elementary, two dimensional analysis based on linear force displacement laws shows, that the stress concentration is dependent only upon the digital quantity of the number of adjacent, broken filaments or bonds, and is independent of the spacing and of the relative elastic properties of the fiber and matrix.

Descriptors :   *FIBER REINFORCED COMPOSITES, *FAILURE(MECHANICS), DYNAMICS, DISPLACEMENT, ELASTIC PROPERTIES, LINEARITY, BONDING, FILAMENTS, RIGIDITY, FORCE(MECHANICS), STRESS CONCENTRATION.

Subject Categories : Mechanics
      Laminates and Composite Materials

Distribution Statement : APPROVED FOR PUBLIC RELEASE