Stress Analysis on Rectangular Cross-Sectional Ring Headers

[+] Author and Article Information
M. Murata

Technical Center, Miura Institute of R & D, 7 Horie Matsuyama, Ehime, Japan 799-26

M. B. Utzinger

Miura Boiler WEST, Inc., Wheeling, IL 60090

D.-H. Chen

Department of Mechanical System Engineering, Kyushu Institute of Technology, Iizuka, Japan 820

H. Nisitani

Kyushu University, Fukuoka, Japan 812

J. Pressure Vessel Technol 117(4), 293-297 (Nov 01, 1995) (5 pages) doi:10.1115/1.2842126 History: Received February 20, 1994; Revised January 19, 1995; Online February 11, 2008


For rectangular cross-sectional ring headers, the authors’ theoretical stress analysis is presented to agree with actual stresses by measurement with strain gages. Therefore, this analytical method is applicable for similar rectangular cross-sectional ring headers. When the aspect ratio (length of two cylinders/radius difference between two cylinders) is more than three, moments originating at the end of finite long cylinders and tangential stresses on the half-length of both cylinders are almost the same as values from infinitely long cylinders. Regarding the welds between flat cover plates and cylinders, cover plate designs can be remarkably thinner by changing the weld shape, that is, by using T-joint weld with a single-bevel groove, than compared to Type (i) in PG-31 of ASME Code.

Copyright © 1995 by The American Society of Mechanical Engineers
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