Based on three-dimensional (3-D) FE limit analyses, this paper provides plastic limit, collapse and instability load solutions for pipe bends under combined pressure and in-plane bending. The plastic limit loads are determined from FE limit analyses based on elastic-perfectly plastic materials using the small geometry change option, and the FE limit analyses using the large geometry change option provide plastic collapse loads (using the twice-elastic-slope method) and instability loads. For the bending mode, both closing bending and opening bending are considered, and a wide range of parameters related to the bend geometry is considered. Based on the FE results, closed-form approximations of plastic limit and collapse load solutions for pipe bends under combined pressure and bending are proposed.
- Pressure Vessels and Piping Division
Closed-Form Plastic Collapse Loads of Pipe Bends Under Combined Pressure and In-Plane Bending
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Oh, C, & Kim, Y. "Closed-Form Plastic Collapse Loads of Pipe Bends Under Combined Pressure and In-Plane Bending." Proceedings of the ASME 2006 Pressure Vessels and Piping/ICPVT-11 Conference. Volume 5: High Pressure Technology, Nondestructive Evaluation, Pipeline Systems, Student Paper Competition. Vancouver, BC, Canada. July 23–27, 2006. pp. 387-398. ASME. https://doi.org/10.1115/PVP2006-ICPVT-11-93770
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