偏心摆子发电装置系泊系统的动力学分析

Dynamic analysis of mooring system of power generation with eccentric pendulum

基于凝集质量法,运用水动力分析软件OrcaFlex对偏心摆子发电装置的系泊系统进行动力学分析。通过分析缆索张力特点得到了关于缆索静态分析求解公式简洁的推导过程。针对不同材料缆索的4点系泊系统,分析了发电装置的横摇、纵摇以及缆索上端有效张力和不同水深张力曲线。发现缆索材料对发电装置的横摇和纵摇没有影响,随着时间的增加,处于上风向的端部节点张力会变得越来越大,而下风向的张力值仍然较小且呈明显的波动变化,而且缆索张力的变化特点与缆索材料有关,得出的结论对实际工程具有一定的指导意义。

Based on the lumped mass method,the dynamics analysis of the mooring system of power genera-tion with eccentric pendulum was established with Orca Flex,the hydrodynamic analysis software. The simple deri-vational process of formula about static analysis of cable was deduced by analyzing the characteristics of cable. Aim-ing at the four points mooring system of power generation with different materials,rolling and pitch of power genera-tion was analyzed,and the effective tension curves of cable upper end and tension curves in different depth were an-alyzed. It can be found that the material of cable has no influence on the roll and pitch of power generation,and thetension of ending node becomes higher and higher in upwind with the increase of time,however,it is lesser andfluctuant in downwind,moreover,the changing characteristics of cable tension is related to the material of cable.The conclusions have guiding significance for practical project.