Accession Number : ADA311644

Title :   Experimental Study of Inelastic Stress Concentration around a Circular Notch.

Descriptive Note : Master's thesis,

Corporate Author : NAVAL POSTGRADUATE SCHOOL MONTEREY CA

Personal Author(s) : Long, Kenneth S.

PDF Url : ADA311644

Report Date : MAR 1996

Pagination or Media Count : 90

Abstract : Experiments were conducted to determine whether energy-density relations can be used to predict elastic-plastic stresses and strains near a circular notch for 7075-T6 aluminum alloys and ARALL 4 composites. The loading conditions were tension and four-point bending. Glinka and Neuber have developed relations that predict local inelastic strain response based on the stress-strain solution for small plastic zone sizes. It has been shown that these relations are appropriate for simple tension and in-plane bending, where stress and strain are uniform through the thickness. This study investigates the application of the Glinka and Neuber relations to samples where stress/strain is not constant though the thickness. Nonconstant stress/strain are the result of out-of-plane bending and laminate characteristics.

Descriptors :   *ALUMINUM ALLOYS, *NOTCH TOUGHNESS, *STRESS CONCENTRATION, STRESS STRAIN RELATIONS, THICKNESS, SIZES(DIMENSIONS), LAMINATES, ELASTIC PROPERTIES, THESES, BENDING, TENSION, PLASTIC PROPERTIES.

Subject Categories : Metallurgy and Metallography

Distribution Statement : APPROVED FOR PUBLIC RELEASE