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综合利用不同的耗能机理共同耗能和具有多道耗能减震防线的阻尼器是目前阻尼器设计的新思想。针对以往液体粘滞阻尼器的不足,为了获得性能更优异的阻尼器,在普通液体粘滞阻尼器研究的基础上,利用形状记忆合金(SMA)的超弹性性能,设计出一种新型SMA绞线-液体粘滞阻尼器。首先进行了SMA绞线的力学性能试验,分析其超弹性性能,然后分析该阻尼器的工作原理及SMA绞线和液体粘滞阻尼器共同耗能的工作机理。最后数值分析计算了这种阻尼器在不同工况下的阻尼力-位移曲线,通过与普通液体粘滞阻尼器对比分析,验证所研制的SMA绞线-液体粘滞阻尼器具有更优异的性能。
The comprehensive utilization of different energy-dissipation mechanisms and the use of multi-channel energy-absorbing shock absorber damper is the new idea of damper design. Aiming at the shortcomings of past viscous dampers, in order to obtain more excellent performance dampers, based on the research of ordinary viscous liquid dampers, a new type of SMA twist was designed by using the super elastic properties of shape memory alloy (SMA) Line - Liquid viscous damper. First, the mechanical properties of SMA strands were tested to analyze their superelastic properties. Then the working principle of this damper and the working mechanism of joint energy loss of SMA strands and liquid viscous dampers were analyzed. Finally, the damping force-displacement curve of this kind of damper under different operating conditions was calculated by numerical analysis. By comparing with the conventional liquid viscous damper, it was verified that the proposed SMA wire-liquid viscous damper has more excellent performance .