Accession Number : ADA333226
Title : Effects of Texture on the Plastic Anisotropy of Orthorhombic Sheets of Cubic Metals: A Group-Theoretic Analysis
Descriptive Note : Final technical rept. 15 Sep 94-14 Sep 97
Corporate Author : KENTUCKY UNIV LEXINGTON
Personal Author(s) : Man, Chi-Sing
PDF Url : ADA333226
Report Date : 13 NOV 1997
Pagination or Media Count : 18
Abstract : A plastic potential with seven texture coefficients, which shows explicitly how crystallographic texture would affect the plastic flow of sheet metals (e.g., aluminum) in metal-forming processes was developed. Formulae relating plastic strain ratios (r-values) of sheet metals to their texture coefficients, as predicted by this plastic potential, were derived. The derivation of this new plastic potential was based physically on the principle of material frame-indifference and mathematically on the theory of group representations and theory of invariants. The group-theoretic method described herein could be carried further if derivation of a plastic potential with higher texture coefficients should become desirable.
Descriptors : *ALUMINUM, *ANISOTROPY, *PLASTIC PROPERTIES, *TEXTURE, *SHEET METAL, STRAIN(MECHANICS), COEFFICIENTS, CRYSTALLOGRAPHY, PLASTIC FLOW.
Subject Categories : Properties of Metals and Alloys
Distribution Statement : APPROVED FOR PUBLIC RELEASE