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根据悬摆减震原理,结合形状记忆合金,设计并制作了一种新型形状记忆合金复合悬摆减震系统(SMA-SPDS),并对该减震系统进行了动力测试。采用有限元软件ANSYS建立小雁塔模型结构减震控制模型,并将模拟分析值同试验结果作对比,验证减震控制模型的可靠性,同时,将该控制方法进一步应用于小雁塔原型结构。结果表明:文中研发的SMA-SPDS频率和阻尼均可调可控,系统性能稳定,减震效果明显;小雁塔模型结构减震控制模拟计算值与试验值基本吻合;随着控制模态阶次的提高,需要的SMA-SPDS的数量增加,对小雁塔结构的控制效果也明显提高。
According to the principle of pendulum damping and combining with shape memory alloy, a new SMA-SPDS suspension system was designed and fabricated, and the dynamic test of the damping system was carried out. The finite element software ANSYS was used to establish the damping control model of the small goose pagoda model structure. The simulation analysis was compared with the experimental results to verify the reliability of the damping control model. At the same time, the control method was further applied to the prototype structure of the small wild goose pagoda . The results show that the frequency and damping of the SMA-SPDS developed in this paper are adjustable and controllable, and the system performance is stable and the damping effect is obvious. The calculated value of the damping control of the small Wild Goose Pagoda model basically agrees with the experimental value. With the control mode order Times increased, the number of SMA-SPDS needed increased, the control effect of the structure of the Small Wild Goose Pagoda also significantly improved.