风机柔性塔筒阻尼索减振研究  

Vibration reduction of flexible wind turbine tower with damping cable

作　　者：禹见达[1,2] 胡磊 彭文林 YU Jian-da;HU Lei;PENG Wen-lin(School of Civil Engineering,Hunan University of Science and Technology,Xiangtan 411201,China;Hunan Provincial Key Laboratory of Structures for Wind Resistance and Vibration Control,Hunan University of Science and Technology,Xiangtan 411201,China)

机构地区：[1]湖南科技大学土木工程学院,湖南湘潭411201 [2]湖南科技大学结构抗风与振动控制湖南省重点实验室,湖南湘潭411201

出　　处：《振动工程学报》2024年第11期1811-1817,共7页Journal of Vibration Engineering

基　　金：国家自然科学基金资助项目(52278307,W2411050);湖南省自然科学基金资助项目(2022JJ30261)。

摘　　要：针对风机柔性塔筒多阶模态振动,设计了一种自锚式阻尼索,将塔筒弯曲振动的转角位移转换为线位移,驱动阻尼器耗能减振。建立了塔筒-阻尼索振动方程,得到了阻尼索为风机塔筒前两阶弯曲振动所提供的附加阻尼比解析解,通过模型试验研究了阻尼器黏性阻尼系数与风机塔筒前两阶模态振动时阻尼索提供的附加阻尼比的关系。研究结果表明:对于塔筒前两阶弯曲振动,阻尼索都能提供较大的附加阻尼比,并且附加阻尼比解析解与试验结果相吻合。基于附加阻尼比理论计算公式,对阻尼索减振性能进行了参数影响分析。Aiming at the problem of the multi-order modal vibration of flexible wind turbine tower,a self anchored damping cable is designed in this paper,which converts the angular displacement of tower bending vibration into linear displacement,and drives the damper to dissipate energy and reduce vibration.Firstly,the tower-damper-cable vibration equation is established,and the analytical solution of the additional damping ratio provided by the damper cable for the first two-order bending vibration of the wind turbine tower is obtained.Then,the relationship between the damper viscosity coefficient and the additional damping ratio provided by the damper cable for the first two-order modal vibration of the wind turbine tower is analyzed through model experiment.The results show that the damping cable can provide a large additional damping ratio for the first two-order bending vibration of the tower,and the analytical solution of the additional damping ratio is in good agreement with the experimental results.Finally,based on the theoretical calculation formula of additional damping ratio,the influence of parameters on the damping performance of damping cable is analyzed.

关 键 词：振动控制 风机塔筒 阻尼减振 阻尼索 

分 类 号：TB535[理学—物理] TK83[理学—声学] TU973.2[动力工程及工程热物理—流体机械及工程]