FDPSO张力系统的非线性动力分析  

Research on Nonlinear Vibrations of FDPSO’s Tension System

作　　者：雷松[1] 张文首[1] 岳前进[1] 赵岩[1] 

机构地区：[1]大连理工大学运载工程与力学学部,辽宁大连116024

出　　处：《中国造船》2010年第3期138-144,共7页Shipbuilding of China

基　　金：国家科技重大专项(2008ZX05026-06-03)

摘　　要：根据浮式钻井生产储油系统(FDPSO)的概念设计,建立了张力系统的非线性耦合振动控制方程,同时考虑横向流产生的涡街作用和轴向的张力变化引起的参数激励,揭示了张力系统的耦合振动规律。采用数值方法进行求解,根据算例中的两种不同工况分析了张力系统的动力特性,结果表明这种张力系统设计具有一定的位移补偿效果,但在设计时一定要避免发生共振现象;并分析了非线性耦合效应对计算结果的影响,当立管的长径比l/D较大时,建议采用非线性模型。Based on the concept design of FDPSO,the Nonlinear coupled equations of tension system are developed.The vortex-induced vibration at transverse and the parametric excitation at axial is considered.The equations describe dynamic characters of the tension system.Numerical results reflect that the steady-state vibration amplitude of the riser is determined by the vortex-induced vibration,the vibration amplitudes of the deck and the weight greatly varies with different parametric excitation,and the axial vibration has obvious influence on the transverse vibration when the ratio of length-to-diameter is large.

关 键 词：浮式钻井生产储油系统 张力系统 非线性 涡激振动 参数共振 

分 类 号：TU318[建筑科学—结构工程]