Creep Buckling of Ovalized Tubes Under External Pressure

[+] Author and Article Information
V. Koundy, T. Forgeron, J. Hivroz

CEA-CEREM, Service de Recherche Métallurgiques Appliquées, CEA-Saclay, 91191 Gif-Sur-Yvette cedex, France

J. Pressure Vessel Technol 118(4), 460-463 (Nov 01, 1996) (4 pages) doi:10.1115/1.2842214 History: Received January 01, 1993; Revised February 23, 1996; Online February 11, 2008


In order to get a better understanding of the role of various parameters on the creep collapse phenomenon of long circular tubes, an experimental and numerical program has been undertaken. It mainly aims at studying the influence of the behavior of the material composing the circular tubes and their geometrical characteristics on the flattening time. This paper presents the results of numerical simulations performed with a specific computer program using an analytical approach. They have been compared with the data obtained from creep tests performed in various conditions on preovalized tubes as well as with the solutions obtained from the finite element method. It is shown that a good agreement is achieved between experimental results and calculation results.

Copyright © 1996 by The American Society of Mechanical Engineers
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