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contributor authorQingshan, Feng
contributor authorQun, Chang
contributor authorHaidong, Jia
contributor authorYi, Wu
contributor authorLianshuang, Dai
contributor authorYuguang, Cao
date accessioned2023-11-29T19:37:04Z
date available2023-11-29T19:37:04Z
date copyright5/25/2023 12:00:00 AM
date issued5/25/2023 12:00:00 AM
date issued2023-05-25
identifier issn0094-9930
identifier otherpvt_145_04_041801.pdf
identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4294901
description abstractThe failure accidents in girth weld of pipelines occur frequently due to the combination of internal defects and external loads. However, the research on the fracture behavior of girth weld defects is relatively poor at present. To solve this problem, the cracking behavior and strain evolution law of the inner wall defects of the pipe girth weld are studied in combination with full-scale tests (FST). The constitutive and Gurson-Tvergaard-Needleman damage parameters of the pipe base metal zone, weld zone and heat-affected zone (HAZ) are calibrated through the small punch test (SPT) and single edge notch bending (SENB) test. On this basis, the welded pipe model with inner wall defects is established, and a numerical simulation method for dynamic fracture behavior based on damage mechanics is formed. The numerical simulation method is verified by FST data and theoretical calculation. The results show that the numerical results are consistent with the FST and theoretical calculation in the elastic stage, plastic stage, and fracture stage, and the error is within 10%. The novel numerical simulation method is provided as a means for the fracture behavior research of pipeline girth weld.
publisherThe American Society of Mechanical Engineers (ASME)
titleStudy on Numerical Simulation Method of Fracture Behavior of Pipeline Girth Weld
typeJournal Paper
journal volume145
journal issue4
journal titleJournal of Pressure Vessel Technology
identifier doi10.1115/1.4062461
journal fristpage41801-1
journal lastpage41801-11
page11
treeJournal of Pressure Vessel Technology:;2023:;volume( 145 ):;issue: 004
contenttypeFulltext


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