Measurement of Tube-to-Support Dynamic Forces in Fretting-Wear Rigs

[+] Author and Article Information
N. J. Fisher

Chalk River Nuclear Laboratories, Atomic Energy of Canada Limited, Chalk River, Ontario, Canada

B. Ingham

United Kingdom Atomic Energy Authority, Harwell, England

J. Pressure Vessel Technol 111(4), 385-393 (Nov 01, 1989) (9 pages) doi:10.1115/1.3265695 History: Received August 07, 1988; Revised February 22, 1989; Online November 05, 2009


Tubes within tube and shell heat exchangers are supported at intermediate points by plates. Flow-induced vibration can cause tubes to impact and rub against these supports, or other tubes, and can result in tube fretting-wear. The tube-to-support dynamic interaction, which consists of dynamic contact forces and tube motion, is used to relate single-span wear data to real heat exchanger configurations consisting of multi-span tube bundles. This paper describes the technique used to measure tube-to-support dynamic forces in the Chalk River Nuclear Laboratories impact fretting-wear test facility and reports test results that validate the technique. The force measurement technique is shown to provide a reasonable measure of dynamic contact forces.

Copyright © 1989 by ASME
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