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RESEARCH PAPERS

Dynamic Crack Propagation in Precracked Cylindrical Vessels Subjected to Shock Loading

[+] Author and Article Information
C. H. Popelar

Department of Engineering Mechanics, The Ohio State University, Columbus, Ohio 43210

P. C. Gehlen

Department of Mechanical Engineering, University of Tulsa, Tulsa, Okla.

M. F. Kanninen

Applied Solid Mechanics Section, Battelle Columbus Laboratories, Columbus, Ohio 43201

J. Pressure Vessel Technol 103(2), 155-159 (May 01, 1981) (5 pages) doi:10.1115/1.3263381 History: Received January 12, 1981; Online November 05, 2009

Abstract

Previous work has shown that a speed-independent dynamic fracture toughness property can be used in an elastodynamic analysis to describe crack initiation and unstable propagation under impact loading. In this paper, a further step is taken by extending the analysis from simple laboratory test specimens to treat more realistic crack-structure geometries. A circular cylinder with an initial part-through wall crack subjected to an impulsive loading on its inner surface is considered. The crack is in a radial-axial plane and has its length in the axial direction long enough that a state of plane strain exists at the center of the crack. Crack growth initiation and propagation through the wall is then calculated. It is found that, once initiated, crack propagation will continue until the crack penetrates the wall. Crack arrest within the wall does not appear to be possible under the conditions considered in this paper.

Copyright © 1981 by ASME
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