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RESEARCH PAPERS

An Elastic-Plastic Stress Analysis of the Specimen Used in the Torsional Kolsky Bar

[+] Author and Article Information
Eric K. C. Leung

Division of Engineering, Brown University, Providence, R. I. 02912

J. Appl. Mech 47(2), 278-282 (Jun 01, 1980) (5 pages) doi:10.1115/1.3153655 History: Received September 01, 1979; Revised November 01, 1979; Online July 21, 2009

Abstract

This paper examines the stress concentration, the yielding process, and the growth of the elastic-plastic boundary as a function of applied torque in tubular specimens with a short thin-walled section. Although the analysis is entirely quasi-static, it can, under the proper circumstances, be applied to the deformation of short specimens as generally used for dynamic testing in the torsional Kolsky bar. In the analysis, the governing equations for both elastic and elastic-plastic analyses are presented, the latter taking into account work hardening. Numerical solutions of these equations employ the finite-element method. The elastic stress distribution in the specimen and the elastic-plastic enclaves are presented for various loading stages.

Copyright © 1980 by ASME
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