Three-Dimensional Elastic Stresses in Circular Bar with Annular Groove in Couple-Stress Theory : Axisymmetric Torsion Problem

Abstract

This paper describes a stress concentration problem of circular bar with annular groove under axisymmetric torsion in the linear couple-stress theory. For this analysis, the indirect fictitious-boundary integral method is used. As a result, the influence of parameters, such as the characteristic length and the ratio of bending-twisting moduli, on stress concentration factors is made clear.