Numerical investigation to examine the effect of introducing a crack in a residual stress field

Simon Kamel, Noel P. O'Dowd, Kamran M. Nikbin

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

This paper presents a detailed two dimensional finiteelement study to examine the effect of introducing a crack either progressively or instantaneously into a residual stress field. A progressive crack is defined as a crack which is introduced in fixed increments of crack extension until the desired crack length is achieved. An instantaneous crack is one in which a crack of the required length is introduced instantaneously into the finite-element mesh. Inspection is made of the crack tip fields and the crack opening displacements. A modified definition of the J-integral, which accounts for the initial plastic strain due to residual stress, is assessed, in order to examine its ability to characterize the intensity of the near crack tip fields. The implications of the results on fracture assessment of structural components are discussed.

Original languageEnglish
Title of host publicationASME 2008 Pressure Vessels and Piping Conference, PVP2008
Pages117-124
Number of pages8
EditionPARTS A AND B
DOIs
Publication statusPublished - 2008
EventASME 2008 Pressure Vessels and Piping Conference, PVP2008 - Chicago, IL, United States
Duration: 27 Jul 200831 Jul 2008

Publication series

NameAmerican Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP
NumberPARTS A AND B
Volume6
ISSN (Print)0277-027X

Conference

ConferenceASME 2008 Pressure Vessels and Piping Conference, PVP2008
Country/TerritoryUnited States
CityChicago, IL
Period27/07/0831/07/08

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