NONLINEAR, AXISYMMETRICAL FINITE-ELEMENT ANALYSES OF A CIRCUMFERENTIALLY CRACKED BAR SPECIMEN

Authors
Citation
Y. Lei et Bk. Neale, NONLINEAR, AXISYMMETRICAL FINITE-ELEMENT ANALYSES OF A CIRCUMFERENTIALLY CRACKED BAR SPECIMEN, International journal of pressure vessels and piping, 73(3), 1997, pp. 199-210
Citations number
9
ISSN journal
03080161
Volume
73
Issue
3
Year of publication
1997
Pages
199 - 210
Database
ISI
SICI code
0308-0161(1997)73:3<199:NAFAOA>2.0.ZU;2-Y
Abstract
A review of the use of circumferentially cracked bar specimens for the measurement of fracture toughness has identified several areas where further information is required before a test method can be fully deve loped. An area of concern was the choice of J-integral function availa ble in the literature for the specimen. This article compares the J-in tegral functions available in the literature with the Rice contour int egral evaluated from the results of non-linear, axi-symmetric finite e lement analyses performed for a range of crack depths and material beh aviour. The comparison enables the optimum function to be chosen. The finite element analyses also enable an improved limit load function fo r the specimen to be derived. (C) 1998 Elsevier Science Limited.