Added Fluid Mass for Bellows Expansion Joints in Axial Vibrations

[+] Author and Article Information
V. F. Jakubauskas

Kaunas University of Technology, Kestucio str. 27, Kaunas, 3004 Lithuania

J. Pressure Vessel Technol 121(2), 216-219 (May 01, 1999) (4 pages) doi:10.1115/1.2883689 History: Received March 20, 1998; Revised November 19, 1998; Online February 11, 2008


This paper presents the results of investigation of the fluid added mass in axial vibrations of bellows expansion joints. The added mass is shown to consist of three parts, one due to convolution translation in axial direction, another due to distortion of the convolution during vibration, and the third one due to the return flow in central section of bellows. The latter component was ignored due to its negligibility in comparison with the first two parts. The distortion component for a half-convolution has been determined using finite element analysis and the results are presented in graphical form for a typical range of bellows geometry. The total added mass is given in a form suitable for hand calculations.

Copyright © 1999 by The American Society of Mechanical Engineers
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