This paper investigates the effect of helix angle on the structural bending capacity of an API 5-1/8 inch 15,000 psi rated threaded flange under internal pressure and external tension and bending. The three-dimensional finite element flange connection is analyzed with and without the helix angle, and API 17TR8 criteria is selected as a standard to calculate capacity. It was found that the helix angle model predicts a more conservative bending capacity with low internal pressure when compared to the model without a helix angle. At higher bore pressures, the roles reverse and the bending capacity predicted by the helix angle model is less conservative than the non-helix angle model. This disparity is diminished as external tension is increased.
- Pressure Vessels and Piping Division
Effect of Helix Angle on the Bending Capacity of a 5 Inch API-Style Threaded Flange
- Views Icon Views
- Share Icon Share
- Search Site
Han, Y, Shirley, B, & Pivowar, J. "Effect of Helix Angle on the Bending Capacity of a 5 Inch API-Style Threaded Flange." Proceedings of the ASME 2018 Pressure Vessels and Piping Conference. Volume 5: High-Pressure Technology; ASME Nondestructive Evaluation, Diagnosis and Prognosis Division (NDPD); Rudy Scavuzzo Student Paper Symposium and 26th Annual Student Paper Competition. Prague, Czech Republic. July 15–20, 2018. V005T05A010. ASME. https://doi.org/10.1115/PVP2018-85162
Download citation file: