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RESEARCH PAPERS

A Thick-Walled Cylinder With an Axisymmetric Internal or Edge Crack

[+] Author and Article Information
R. Erdol

Black Sea Technical University, Trabzon, Turkey

F. Erdogan

Department of Mechanical Engineering and Mechanics, Lehigh University, Bethlehem, Pa.

J. Appl. Mech 45(2), 281-286 (Jun 01, 1978) (6 pages) doi:10.1115/1.3424288 History: Received December 01, 1976; Revised March 01, 1977; Online July 12, 2010

Abstract

The paper considers the elastostatic axisymmetric problem for a long thick-walled cylinder containing a ring-shaped internal or edge crack. Using the standard transform technique the problem is formulated in terms of an integral equation which has a simple Cauchy kernel for the internal crack and a generalized Cauchy kernel for the edge crack as the dominant part. As examples the uniform axial load and the steady-state thermal stress problems have been solved and the related stress-intensity factors have been calculated. Among other findings the results show that in the cylinder under uniform axial stress containing an internal crack the stress-intensity factor at the inner tip is always greater than that at the outer tip for equal net ligament thicknesses and in the cylinder with an edge crack which is under a state of thermal stress the stress-intensity factor is a decreasing function of the crack depth, tending to zero as the crack depth approaches the wall thickness.

Copyright © 1978 by ASME
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