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http://dx.doi.org/10.3795/KSME-A.2004.28.10.1483

Plastic Collapse Solution for API 5L X65 Natural Gas Linepipe  

Kim Woo-sik (한국가스공사)
Shim Do-jun (성균관대학교 기계공학부)
Choi Jae-boong (성균관대학교 기계공학부)
Baek Jong-hyun (한국가스공사)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.28, no.10, 2004 , pp. 1483-1491 More about this Journal
Abstract
To assess the integrity of the pipeline is the most important problem to be solved first of all for prevention of any fracture accident of the pipeline. As a result of exerting such efforts, a number of plastic collapse assessment equations have been suggested, however, the scope of using or applying such assessment equations has not been exactly defined. In this study, the case that a surface crack existed in the circumferential direction in the external side of the natural gas pipeline and a bending load was applied to the pipeline was analytically identified as the most critical condition, and a plastic collapse assessment equation fur it was suggested. The flow stress of the API X65 linepipe was defined through the experiment conducted on SENT specimens. Also, a local assessing criterion of a 3-dimensional crack behavior considering not only the crack depth but also the crack length was suggested. Finally, a plastic collapse assessment equation for the API X65 linepipe was developed by performing the 3-dimensional finite element analysis.
Keywords
API X65 Linepipe; Finite Element Analysis; FFS; Local and Global Plastic Collapse Solution;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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