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RESEARCH PAPERS

Damage Tolerance of Large Shell Structures

[+] Author and Article Information
L. Minnetyan

Department of Civil and Environmental Engineering, P.O. Box 5710, Clarkson University, Potsdam, NY 13699-5710

C. C. Chamis

Structures Division, Lewis Research Center, National Aeronautics and Space Administration, MS 49-7, Cleveland, OH 44135

J. Pressure Vessel Technol 121(2), 188-195 (May 01, 1999) (8 pages) doi:10.1115/1.2883685 History: Received July 21, 1998; Revised January 21, 1999; Online February 11, 2008

Abstract

Progressive damage and fracture of large shell structures is investigated. A computer model is used for the assessment of structural response, progressive fracture resistance, and defect/damage tolerance characteristics. Critical locations of a stiffened conical shell segment are identified. Defective and defect-free computer models are simulated to evaluate structural damage/defect tolerance. Safe pressurization levels are assessed for the retention of structural integrity at the presence of damage/defects. Damage initiation, growth, accumulation, and propagation to fracture are included in the simulations. Damage propagation and burst pressures for defective and defect-free shells are compared to evaluate damage tolerance. Design implications with regard to defect and damage tolerance of a large steel pressure vessel are examined.

Copyright © 1999 by The American Society of Mechanical Engineers
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