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RESEARCH PAPERS

The Plastic Ratcheting of Thin Cylindrical Shells Subjected to Axisymmetric Thermal and Mechanical Loading

[+] Author and Article Information
S. Karadeniz, A. R. S. Ponter, K. F. Carter

Department of Engineering, University of Leicester, Leicester, U.K.

J. Pressure Vessel Technol 109(4), 387-393 (Nov 01, 1987) (7 pages) doi:10.1115/1.3264921 History: Received May 18, 1987; Online November 05, 2009

Abstract

The paper discusses the relationship between material properties and structural ratcheting for thin cylindrical shells subjected to severe thermal loading. The need to understand this problem arises in the design of Sodium Cooled Fast Reactors. A sequence of shakedown solutions are presented using a finite element technique [13] . It is shown that for tubes subject to moving temperature fields, ratcheting can occur even when no mechanical loads are applied and the material strongly cyclically hardens. Only small movements are required. Stationary thermal cycling is less likely to produce ratcheting. The calculations are compared with two sets of experimental data, which serve to confirm these conclusions.

Copyright © 1987 by ASME
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