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http://dx.doi.org/10.3795/KSME-A.2012.36.9.961

Load Bearing Capacity of Welded Joints between Dissimilar Pipelines with Unequal Wall Thickness  

Baek, Jong-Hyun (R&D Division, Korea Gas Corporation)
Kim, Young-Pyo (R&D Division, Korea Gas Corporation)
Kim, Woo-Sik (R&D Division, Korea Gas Corporation)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.36, no.9, 2012 , pp. 961-970 More about this Journal
Abstract
The behavior of the load bearing capacity of a pipeline with unequal wall thickness was evaluated using finite element analyses. Pipelines with a wall thickness ratio of 1.22-1.89 were adopted to investigate plastic collapse under tensile, internal pressure, or bending stress. A parametric study showed that the tensile strength and moment of a pipeline with a wall thickness ratio less than 1.5 were not influenced by the wall thickness ratio and taper angle; however, those of a pipeline with a wall thickness ratio more than 1.5 decreased considerably at a low taper angle. The failure pressure of a pipeline with unequal wall thickness was not influenced by the wall thickness ratio and taper angle.
Keywords
API 5L X42; API 5L X65; API 5L X80; Dissimilar Pipe; Load Bearing Capacity; Unequal Wall Thickness; Wall Thickness Ratio;
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