大射电望远镜馈源舱的风激振动及其MT MD减振设计研究

Dynamical analysis of Cabin of the Large Telescope under Wind and MTMD Damper Designed

采用修正的Davenport风谱来模拟风荷 ,分析了FAST (Five -hundred -meterApertureSphericalTelescope)大射电望远镜馈源舱在该风荷作用下的振动 ,并根据分析和计算的结果设计了多频调谐质量阻尼器 (MultipleTunedMassDampers) ,计算结果表明 。

Wind load applying to FAST(Five hundred meter Aperture Spherical Telescope) is simulated by the Davanport method, and the vibration characters of the cabin of the FAST actuated by the wind load are discussed in the paper. Based on the analysis, MTMD (Multiple Tuned Mass Dampers) dynamic dampers are designed. The dynamic characters of the cabin with MTMD dampers are simulated when the wind load applying the flexible suspending system. The analyzing results show that the MTMD dampers could effectively reduce the vibration of cabin induced by wind.