Elastic Crack Propagation Along a Pressurized Pipe

[+] Author and Article Information
A. F. Emery, W. J. Love, A. S. Kobayashi

Dept of Mechanical Engineering, University of Washington, Seattle, Wash.

J. Pressure Vessel Technol 98(1), 2-7 (Feb 01, 1976) (6 pages) doi:10.1115/1.3454320 History: Received March 27, 1975; Online October 25, 2010


A finite difference shell code which considers transverse shear and rotatory inertia is used to calculate the dynamic behavior of axially running cracks. Short cracks were instantaneously introduced into a static pressurized cylinder and their tips advanced according to a maximum stress criterion. Calculations were made for a range of the critical stress and the terminal velocity of the crack tip was found to be linearly related to the value of the critical stress. Calculations were also made for rapid and slow depressurization of the cylinder to observe the nature of the arrest. In all cases where arrest occurred it did so abruptly.

Copyright © 1976 by ASME
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