The Dynamics of Heat Exchanger U-Bend Tubes With Flat Bar Supports

[+] Author and Article Information
M. Yetisir, D. S. Weaver

Department of Mechanical Engineering, McMaster University, Hamilton, Ontario, Canada

J. Pressure Vessel Technol 108(4), 406-412 (Nov 01, 1986) (7 pages) doi:10.1115/1.3264805 History: Received October 15, 1985; Revised December 17, 1985; Online November 05, 2009


A theoretical study has been conducted to investigate the effect of flat bar supports on the dynamic response of a heat exchanger U-tube. The tube was modeled using 3-D, six degrees of freedom per node beam finite elements and excited at its lowest three natural frequencies. The equations of motion were integrated and the time response was analysed using a Fast Fourier Transform Algorithm. The modal frequency and dissipation contributions were determined and the effects of support friction and clearance and excitation magnitude were investigated.

Copyright © 1986 by ASME
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