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RESEARCH PAPERS

Robust Approximate Methods for Estimating Inelastic Fracture Parameters

[+] Author and Article Information
R. Seshadri, R. K. Kizhatil

Memorial University of Newfoundland, St. John’s, Newfoundland, Canada A1B 3X5

J. Pressure Vessel Technol 117(2), 115-123 (May 01, 1995) (9 pages) doi:10.1115/1.2842098 History: Received April 04, 1994; Revised November 03, 1994; Online February 11, 2008

Abstract

Robust approximate methods to estimate the inelastic energy release rate J , and the creep crack-growth parameter, C *, for cracked components are described in this paper. These methods use linear elastic finite element analysis in conjunction with the concepts of the generalized local stress strain (GLOSS) analysis and redistribution nodes (r-nodes), and are readily applicable to complex geometries and loadings. J -estimates obtained by the use of robust methods are found to be in good agreement with the results of elastic-plastic finite element analysis.

Copyright © 1995 by The American Society of Mechanical Engineers
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