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TECHNICAL BRIEFS

Residual Stresses in Tube-Tubesheet Joints With Grooves

[+] Author and Article Information
D. P. Updike, A. Kalnins

Department of Mechanical Engineering and Mechanics, Lehigh University, Bethlehem, PA 18015

S. M. Caldwell

Eastman Chemical Company, Kingsport, TN 37662

J. Pressure Vessel Technol 114(2), 249-251 (May 01, 1992) (3 pages) doi:10.1115/1.2929037 History: Received November 26, 1990; Revised January 13, 1992; Online June 17, 2008

Abstract

Hydraulic expansion of a tube into a grooved tubesheet is modeled as an elastic-plastic process. A special shell theory is used to obtain the tube residual stresses in the vicinity of the grooves. It is found that the maximum tensile residual stresses occur at the inside surface of the tube, but their magnitudes are lower than those in the transition region. The results also suggest the use of a higher hydraulic forming pressure for grooved joints than for ungrooved joints.

Copyright © 1992 by The American Society of Mechanical Engineers
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