关键词: TiNi形状记忆合金, 阻尼器, 阻尼性能, 振动特性

Abstract:

Using two groups of austenitic TiNi alloy rings as the energy dissipation components, a new type of damper was designed, and its structure and work principle  were introduced. The effects of the number of rings, longitudinal pre-deformation and the load on its vibration characteristics were measured by the vibration system. The results indicate that the vibration characteristics of the double-direction ring damper are complicated and different from that of the SDOF(single degree of freedom) system.At low frequency range (0~10Hz), the transmissibility is almost less than 1, that is to say, the vibration system is under vibration isolation area. The results show that the damper possesses a high damping capacity. Moreover its damping capacity can be improved by increasing the number of rings and longitudinal pre-deformation.

Key words: TiNi SMA(shape memory allory), damper, damping capacity, vibration characteristics