Kinematic-Hardening in Zinc-Alloy Tubes

[+] Author and Article Information
D. R. Jenkins

The University of Michigan, Department of Engineering Mechanics, Ann Arbor, Mich.

J. Appl. Mech 32(4), 849-858 (Dec 01, 1965) (10 pages) doi:10.1115/1.3627326 History: Received August 13, 1964; Revised February 12, 1965; Online September 15, 2011


The kinematic theory of strain-hardening is used to evaluate the post-yield behavior of tubular specimens subjected to axial force combined with internal pressure or torque. Prediction of yield-surface motion during strain-hardening is simplified through the use of piecewise linear yield criteria. The predicted behavior is compared with the results of experiments on tubes of Zamak-3 zinc alloy. After an initial loading beyond initial yield, the tubes were reloaded along a second stress path to subsequent yield. The observed state of stress at subsequent yield agreed rather well with the kinematic-hardening theory predictions.

Copyright © 1965 by ASME
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