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RESEARCH PAPERS

Thermomechanical Fracture on a Pressurized Cylindrical Vessel Induced by a Localized Energy Source

[+] Author and Article Information
J. Beraun, J. K. Chen

AFRL/DEPE, Kirtland AFB, 3500 Aberdeen Avenue SE, Albuquerque, NM 87117-5776

D. Y. Tzou

Department of Mechanical and Aerospace Engineering, University of Missouri-Columbia, Columbia, MO 65211

J. Pressure Vessel Technol 121(2), 160-169 (May 01, 1999) (10 pages) doi:10.1115/1.2883680 History: Received April 11, 1997; Revised February 12, 1999; Online February 11, 2008

Abstract

Thermally induced elastic fracture around a localized energy source on a pressurized cylindrical vessel is studied in this work. Analytical solutions are obtained via the method of dual integral transform, with emphasis on the identification of the dominating parameters in thermal cracking. Directions for crack extension from the heat source are examined by the stress and strain-energy-based criteria, including the effects of internal pressure and axial stress. Special features include the intrinsic transition between the thermally driven and the mechanically driven fracture patterns. The physical parameters governing such transition are determined.

Copyright © 1999 by The American Society of Mechanical Engineers
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