Wang JL, Duan ML, He T, Jing C (2014) Numerical solutions for nonlinear large deformation behaviour of deepwater steel lazy-wave riser. Santillan ST, Virgin LN (2011) Numerical and experimental analysis of the static behavior of highly deformed risers. In: Proceedings of the ASME 2007 26th International Conference on Offshore Mechanics and Arctic Engineering. Santillan ST, Virgin LN, Plaut RH (2007) Static and dynamic behavior of highly deformed risers and pipelines. Low YM, Langley RS (2006) Time and frequency domain coupled analysis of deepwater floating production systems. In: Proceedings of the ASME 2016 35th International Conference on Ocean, Offshore and Arctic Engineering. Ĭonstantinides Y, Cao P, Cheng JY, Fu SX, Kusinski G (2016) Steel lazy wave riser tests in harsh offshore environment. Ĭheng JY, Cao PM, Fu SX, Constantinides Y (2016) Experimental and numerical study of steel lazy wave riser response in extreme environment. Sun LP, Qi B (2011) Global analysis of a flexible riser. Sci China Technol Sc 54:1881–1887īai Y, Bai Q (2014) Subsea pipelines and risers. Yang HZ, Li HJ (2011) Sensitivity analysis of fatigue life prediction for deepwater steel lazy wave catenary risers. In: The Twenty-fourth International Ocean and Polar Engineering Conference. Kim S, Kim M-H, Shim S, Im S (2015) Structural performance of deepwater lazy-wave steel catenary risers for FPSOs. ISW shows both “weakening effect” and “strengthening effect” on the dynamic response induced by VM and SW. Extreme values of displacement and stress occur mainly around critical points (i.e., seawater interface, arc bend point, sag bend point). Analysis results indicate that ISW causes extremely large displacements and shear deformations in the X, Y, and Z directions of the SSWR like a slow, massive shock load, particularly in the Y direction. Further, the nonlinear dynamic response of the SSWR is obtained. The accuracy of DRSSWR is verified with experimental data and published results. Then, a computational program, DRSSWR, was developed in this paper. The finite element method and the Newmark-β method are applied to discretize the governing equations and solve the dynamic response of the SSWRs, respectively. Considering ISWs and the combined excitation of vessel motion (VM), surface wave (SW), this paper proposes a three-dimensional nonlinear dynamic model of the SSWRs based on the slender rod model. This paper aims to investigate the nonlinear dynamic response of steel steep wave risers (SSWRs) considering the excitation of internal solitary waves (ISWs).

Orcaflex flexible riser