漂浮式风力机张力腿平台“拟静力”结构强度分析

张力腿平台结构在外界环境载荷作用下的力学分析是张力腿平台设计研究的重点。利用ANSYS软件,采用拟静力分析的方法,对张力腿平台(Tension Leg Platform,TLP)在极端海况风、波、流载荷联合作用下的结构强度进行分析,并针对平台应力集中区域通过添加支撑板的方法进行了局部改进,对改进后的平台再次进行了模拟验证。结果表明:平台立柱隔板的中央位置和立柱顶端变形量较大;平台顶部隔板、底部隔板与立柱联接的地方均出现应力集中;在平台应力集中区域添加支撑板的方法可以明显改善平台局部区域的应力分布,降低应力集中现象的危害。

Quasi-static and structural strength analysis of tension leg platform for floating wind turbine

Mechanical analysis of tension leg platform (TLP) structure under loads of the external environment is an important research for TLP . Under the combined effects of three types of environment loads in extreme sea conditions of wind, waves and currents,of the structure intensity of TLP was analyzed using ANSYS software as well as quasi-static analysis. Stress concentration areas of platform were improved locally by adding a support plate, and the improved platform was simulated and tested again. The results showed that, structure in the center and top of the column had a large amount of deformation. Stress concentration occurred in the connection area of the top and bottom of the platform and the column. By adding a support plate in the areas with stress concentration, the stress distribution for local area could be significantly improved and the stress concentration can be reduced in stress concentration areas. The research provides references for the structural design of the platform and further optimization.