SMA复合摩擦阻尼器在网架结构中的减振效果分析

Vibration Control for Space Frame Structures Using SMA Incorporated Friction Dampers

将SMA复合摩擦阻尼器用作空间网架结构的耗能减振装置,探讨了其在空间结构中的减振控制分析方法。介绍了SMA复合摩擦阻尼器的工作原理和理论模型,建立了网架结构减振控制的运动方程。地震作用下某网架结构减振控制的数值模拟结果表明,SMA复合摩擦阻尼器可有效降低结构地震响应,较之纯摩擦阻尼器和纯SMA阻尼器,减振效果更为优良。

SMA incorporated friction dampers are used as energy dissipation devices in space frame structures and analytical methods of controlled space frame structures with the dampers are discussed. The working mechanism and theoretical model of the SMA incorporated friction damper are introduced. The damper device is applied to a space frame structure to investigate its vibration reduction effectiveness. The motion equations for space frame structures with such dampers are derived. Numerical results show that seismic response of space frame structures can be reduced effectively by using the SMA incorporated friction dampers. The study indicates that the SMA incorporated friction damper is superior to the pure friction damper or pure SMA damper in vibration mitigation performance.