This study was undertaken to investigate and understand the complete post-wrinkling behavior and failure modes of pressured X52-grade wrinkled buried energy pipeline when subjected to monotonically increasing bending deformation. This study involved both experimental and numerical investigations. Detailed parametric study was undertaken using a numerical approach, and it was found that the X52-grade steel linepipe generally exhibits a ductile behavior. The parametric study shows that X52 linepipe with a diameter-to-thickness ratio of 35 or higher does not fail in rupture. However, these linepipes eventually fail in a deformation mode due to excessive cross-sectional deformation. It was also found that the rupture failure occurs only at the wrinkle face of the bent linepipe.
Failure of X52 wrinkled pipeline subjected to monotonic bending deformation and internal pressure
Bruch einer mit Falten behafteten Rohrleitung aus Stahl der Güte X52, die einer ständigen gleichförmigen Biegeverformung und einem Innendruck ausgesetzt ist
International Journal of Offshore and Polar Engineering ; 18 , 1 ; 50-55
2008
6 Seiten, 13 Quellen
Article (Journal)
English
Failure of x52 wrinkled pipelines subjected to monotonie axial deformation
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