SIF Calculation for Two Cracks Emanating From the Internal Boundary of a Tube

[+] Author and Article Information
Y. H. Wang, C. Z. Li

Department of Mechanics, Huazhong University of Science and Technology, Wuhan, Hubei, People’s Republic of China

J. Pressure Vessel Technol 112(4), 374-377 (Nov 01, 1990) (4 pages) doi:10.1115/1.2929891 History: Received January 17, 1989; Revised August 10, 1990; Online June 17, 2008


The stress intensity factor (SIF) corresponding to two collinear cracks emanating from the internal boundary of a tube is calculated by boundary collocation method (BCM). Uniform internal pressure acts in the cylinder and on the crack surfaces or a uniform external tension on the outer boundary. For different ratios of the internal to the external radius, Ri /Re , and different ratios of the crack length to the cylinder thickness, 1/(Re −Ri ), SIF values have been obtained. At the same time, the calculation shows that the convergence of the method is satisfactory.

Copyright © 1990 by The American Society of Mechanical Engineers
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