Investigation on the vibration control performance of a nonlinear PS-TMD for used in steel wind turbine tower
LEI Zhenbo1，LIU Gang1,2，WANG Hui1
1.School of Civil Engineering, Chongqing University, Chongqing 400044, China;
2.Key Laboratory of New Technology for Construction of Cities in Mountain Area, Chongqing University, Chongqing 400045, China
Abstract：Since the specific mechanism and convenient installation, the pendulum tuned mass damper (PTMD) has been widely used in various structures such as high-rise building and transmission tower. In recent years, PTMD has gradually been payed attention in the vibration control of steel wind turbine tower. The prestressed tuned mass damper (PS-TMD) exerts the prestressed tensile force by adding the additional cables, and it can doubly tune the vibration control by pendulum length and tensile force, thus PS-TMD has played an important role in vibration control for the steel wind turbine tower. However, it is worth noticing that the cable deformation effect in PS-TMD would trigger the nonlinearity response, and it will affect the vibration control performance of the system. Consequently, based on the structural dynamics theory, the nonlinear motion equation considering the flexible cable effect was established, and the dynamic coefficient and branch resonance point frequency ratio of PS-TMD were derived. Through the optimization analysis, the design method of optimal tuning parameters was presented in terms of theoretical analysis. Then, numerical results from a 3.2 MW wind turbine showed that the dynamic coefficient amplitude considering the flexible cable deformation effect was smaller than linear PS-TMD under the same condition, and the vibration attenuation performance and energy dissipation ability of resonance response were more prominent than linear system. Finally, the vibration control results under five groups of wind loads indicated that the vibration control performance considering the flexible cable deformation effect is better than that of the linear PS-TMD system.
雷振博1，刘纲1,2，王晖1. 钢制风力机塔架非线性预应力调谐质量阻尼器振动控制性能研究[J]. 振动与冲击, 2023, 42(22): 84-92.
LEI Zhenbo1，LIU Gang1,2，WANG Hui1. Investigation on the vibration control performance of a nonlinear PS-TMD for used in steel wind turbine tower. JOURNAL OF VIBRATION AND SHOCK, 2023, 42(22): 84-92.
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