Accession Number : AD0766680

Title :   Localization of Strain in a Deforming Sheet.

Descriptive Note : Technical rept.,

Corporate Author : ARMY MATERIALS AND MECHANICS RESEARCH CENTER WATERTOWN MASS

Personal Author(s) : Azrin,Morris ; Wonsiewicz,Bud C.

Report Date : APR 1973

Pagination or Media Count : 19

Abstract : ALS), (*DEFORMATION, SHEETS), NUMERICAL ANALYSIS, CREEP, ALLOYS, YIELD POINT, STRESSES, STAINLESS STEEL, STEEL, COPPER, BRASS, PLASTIC PROPERTIESCOMPUTER AIDED ANALYSIS, FORMABILITYA method for obtaining numerical solutions to the Marciniak-Kuczynski analysis for the localization of strain in a deforming sheet is presented. It is found that deformation can start either as plane-strain flow at a local weakness, or as simultaneous yielding in this region and the remainder of the sheet. A third deformation mode, which is not included in the above analysis, occurs when the imposed stress state is that of plane strain. A discussion and equations describing this behavior are also included. The necessity of considering the metallurgical behavior and its influence on the mechanical properties used in the analysis is discussed. (Author)

Descriptors :   (*STRAIN(MECHANICS), METALS), (*DEFORMATION, SHEETS), NUMERICAL ANALYSIS, CREEP, ALLOYS, YIELD POINT, STRESSES, STAINLESS STEEL, STEEL, COPPER, BRASS, PLASTIC PROPERTIES

Subject Categories : Metallurgy and Metallography

Distribution Statement : APPROVED FOR PUBLIC RELEASE