Numerical Simulations and Experimental Study on the Reeling Process of Submarine Pipeline by R-Lay Method

During the reeling process of reel-lay method, pipe will be subjected to combined loading tension and bending. Excessive ovalization affect structural performance even lead instability pipe. In this paper, a numerical simulation model pipe-reeling is established by finite element tools. The Ramberg–Osgood material used study bending moment cross-section during based on Von Mises plasticity nonlinear kinematic hardening rules. results show that section change significantly process. Subsequently, one set 6-inch experimental setups was designed conduct full-scale experiment. Compared with results, feasibility verified. Finally, effects diameter-to-thickness ratio, parameters pipe, axial changes are studied. Research shows each parameter has certain influence process, ratio most obvious effect. When decreases, bearing capacity for moments ability resist enhanced. At same time, significant impact pipeline.