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RESEARCH PAPERS

On the Determination of the Propagation Pressure of Long Circular Tubes

[+] Author and Article Information
S. Kyriakides, M.-K. Yeh, D. Roach

Department of Aerospace Engineering and Engineering Mechanics, The University of Texas at Austin, Austin, Tex. 78712

J. Pressure Vessel Technol 106(2), 150-159 (May 01, 1984) (10 pages) doi:10.1115/1.3264322 History: Received September 20, 1980; Revised March 06, 1984; Online November 05, 2009

Abstract

A propagating buckle can be initiated in tubes under external pressure from localized imperfections. Once initiated a buckle will propagate with the result of flattening the tube behind it. The lowest pressure at which it can propagate is known as the propagation pressure, and it represents a characteristic pressure of the tube. The paper attempts to model quasistatic steady-state propagation through a plane strain large deflection, inelastic analysis of the collapse of a circular ring. An energy balance type of argument is used to obtain a lower-bound estimate of the propagation pressure from the ring response. The results are compared with experimental results obtained from stainless steel and aluminum tubes having diameter-to-thickness ratios ranging between 100 and 10. It was found that for these two materials the estimated value for the propagation pressure was in good agreement with experimental results for D /t > 20.

Copyright © 1984 by ASME
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