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RESEARCH PAPERS

Plastic Strain Concentration in a Cylindrical Shell Subjected to an Axial or a Radial Temperature Gradient

[+] Author and Article Information
H. Hübel

Interatom GmbH, Bergisch Gladbach, West Germany

J. Pressure Vessel Technol 109(2), 184-187 (May 01, 1987) (4 pages) doi:10.1115/1.3264893 History: Received April 17, 1986; Revised December 11, 1986; Online November 05, 2009

Abstract

Plastic strain concentration factors for use in elastic fatigue analyses (like K e in ASME Code) are usually overly conservative, but may be unsafe in certain cases. Especially for unnotched structures under thermal loading, many elastic-plastic analyses demonstrated that these plastic strain concentration factors are too restrictive. Thus, the present work derives appropriate factors for the idealized case of a cylindrical shell made of a linear kinematic hardening material and subjected to a radial or an axial temperature gradient. The results obtained are considered to be applicable to many practical problems.

Copyright © 1987 by ASME
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