Stationary Creep Stresses for Elliptical Cross-Sectional Pipe Bends Subject to In-Plane Bending

[+] Author and Article Information
J. Spence

Department of Mechanics of Materials, University of Strathclyde, Glasgow, Scotland

J. Pressure Vessel Technol 96(3), 162-170 (Aug 01, 1974) (9 pages) doi:10.1115/1.3454162 History: Received January 23, 1974; Online October 25, 2010


A theoretical analysis is presented which allows the determination of the stationary creep stresses acting in a smooth curved pipe of initially elliptical cross section when subject to in-plane bending. The bend is assumed to be of constant thickness and “thin” compared with its cross-sectional axes. The analysis is based on an energy approach and uses a simple power-type creep constitutive law. Results are presented in nondimensional fashion in terms of the maximum linear elastic beam bending stress in a straight tube. A large range of possible geometries is covered.

Copyright © 1974 by ASME
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