Effect of Shear Deformation and Relaxation of Support Conditions on Elastic Buckling of Pressurized Expansion Bellows

[+] Author and Article Information
B. Skoczen

CERN (European Organisation for Nuclear Research), Division LHC, CH-1211 Geneva 23, Switzerland

J. Pressure Vessel Technol 121(2), 127-132 (May 01, 1999) (6 pages) doi:10.1115/1.2883675 History: Received March 20, 1998; Revised December 23, 1998; Online February 11, 2008


Mechanical stability of pressurized expansion bellows and tube-bellows-tube interconnects is considered. Effect of shear deformation on buckling pressure of bellows is shown by using Engesser’s model. A generalized equivalent column concept is developed in order to study effect of relaxation of support conditions on stability of interconnects containing expansion bellows. Two general modes of buckling are discussed: column instability of well-supported bellows (I) and buckling of tube-bellows-tube interconnect if the support-bellows distances are large enough (II). A dramatic drop of critical pressure in the transition region from mode I to mode II is shown.

Copyright © 1999 by The American Society of Mechanical Engineers
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