深海张力腿平台非线性涡激振动响应特性分析

Response Characteristic Analysis of Nonlinear Vortex-induced Vibration of Tension Leg Platform in Deep Sea

针对深海平台张力腿的非线性动力学问题,充分考虑张力腿的非线性特性,提出了一种改进的动力学模型,并利用伽辽金法和有限差分法对模型进行计算,研究波浪、海流、预张力、平台运动等复杂荷载联合作用下张力腿的涡激振动响应特性。计算结果阐明了复杂海洋环境下张力腿平台的动力学机理。研究结果可为深海平台的设计和研究提供参考。

An improved dynamic model was presented for the nonlinear dynamics of tension leg of deep sea platform. Galerkin method and finite difference method were utilized to calculate for the proposed model,the responses of vortex-induced vibration of the TLP under the combined action of wave,current, pre-tension, platform motion and other complex loads were researched. The simulation results show the dynamic mechanism of TLP working in complex sea environment.The results may provide references for the design and research of deep sea platform.