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RESEARCH PAPERS

Thermal Ratcheting With Kinematic Hardening in a Two-Bar Assembly With Unequal Areas and Properties

[+] Author and Article Information
A. R. Brunsvold, H. U. Ahmed, C. C. Stone

Argonne National Laboratory, Argonne, Ill.

J. Eng. Mater. Technol 98(3), 256-263 (Jul 01, 1976) (8 pages) doi:10.1115/1.3443376 History: Received April 15, 1974; Revised December 06, 1974; Online August 17, 2010

Abstract

An analytical model based on a two-bar assembly with unequal areas and material properties is used to determine inelastic stress-strain behavior under a steady mean load and cyclic thermal loads. The study with the model extends previous study on thermal ratcheting with kinematic hardening. The model exhibits much of the behavior of interest in design of pressure vessels subject to thermal loads: elastic behavior, shakedown, ratcheting, captive plastic behavior (a special case of elastic followup), and plastic cycling. The expressions for cyclic changes in stress and cyclic inelastic strains are developed, and the mean-load and thermal-load bounds for the behavior modes are mapped.

Copyright © 1976 by ASME
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