The behavior during the cold bending of pipelines was experimentally and analytically investigated. Full-scale cold bending experiments were performed on API X60 and X80 grade line pipes. Finite element (FE) analyses simulated the cold bending process by considering the contact interactions between a pipe and the components of the bending machine. The results of the simulation were in good agreement with the full-scale experiments. The stress-strain relationship and yield to tensile ratio (Y/T) had no obvious effect on the strain distribution after cold bending. The tensile tests quantitatively evaluated the decrease in the yield stress along the longitudinal direction on the cold bends due to the Bauschinger effect.
Experimental and Analytical Study of Cold Bending Process for Pipelines
Presented at the 20th International OMAE Conference, Rio de Janeiro, Brazil, June 3–18, 2001, of THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS, and contributed by the OOAE Division for publication in the JOURNAL OF OFFSHORE MECHANICS AND ARCTIC ENGINEERING. Manuscript received July 2001; final revision, March 2002. Associate Editor: J. E. Indacochea.
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Fukuda, N., Yatabe , H., Kawaguchi , S., Watanabe , T., and Masuda, T. (April 16, 2003). "Experimental and Analytical Study of Cold Bending Process for Pipelines ." ASME. J. Offshore Mech. Arct. Eng. May 2003; 125(2): 153–157. https://doi.org/10.1115/1.1554701
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