Accession Number : ADA293544
Title : Poisson's Ratio for Tetragonal Crystals.
Descriptive Note : Technical rept.,
Corporate Author : ARMY RESEARCH LAB FORT MONMOUTH NJ
Personal Author(s) : Ballato, Arthur
PDF Url : ADA293544
Report Date : MAR 1995
Pagination or Media Count : 13
Abstract : General expressions for Poisson's ratio are derived for tetragonal crystals; simplified forms are given for cases involving symmetry directions. Poisson's ratio, v, is defined for isotropic media as the quotient of lateral contraction to longitudinal extension arising from application of a simple tensile stress; in most materials, this dimensionless number is positive. In crystals, v takes on different values, depending on the directions of stress and strain chosen. The ratio finds application in a variety of areas of applied elasticity and solid mechanics, for example, as indication of the mechanical coupling between various vibrational modes of motion. jg
Descriptors : *POISSON RATIO, RATIOS, VIBRATION, COMPOSITE MATERIALS, TENSILE STRESS, ELASTIC PROPERTIES, MOTION, ORIENTATION(DIRECTION), CRYSTALS, SOLIDS, MECHANICS, ISOTROPISM, SYMMETRY, MEDIA.
Subject Categories : Crystallography
Laminates and Composite Materials
Solid State Physics
Distribution Statement : APPROVED FOR PUBLIC RELEASE