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Mis-Match limit load analyses and fracture mechanics assessment for welded pipe with circumferential crack at the center of Weldment

Authors
Song, T.-K.Jeon, J.-Y.Shim, K.-B.Kim, Y.-J.Kim, J.-S.Jin, T.-E.
Issue Date
2010
Keywords
Failure assessments; Finite element analysis; Mis-match limit load; Strength mis-match
Citation
Transactions of the Korean Society of Mechanical Engineers, A, v.34, no.1, pp.19 - 26
Indexed
SCOPUS
KCI
Journal Title
Transactions of the Korean Society of Mechanical Engineers, A
Volume
34
Number
1
Start Page
19
End Page
26
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/118307
DOI
10.3795/KSME-A.2010.34.1.19
ISSN
1226-4873
Abstract
In this paper, limit load analyses and fracture mechanics analyses were conducted via finite element analyses for the welded pipe with circumferential crack at the center of the weldment. Systematic changes for strength mismatch ratio, width of weldment, crack shape and thickness ratio of the pipe were considered to provide strength mismatch limit load. And J-integral calculations based on reference stress method were conducted for two materials, stainless steel and ferritic steel. Reference stress defined by provided strength mis-match limit load gives much more accurate J-integral.
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