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设计了应用TiNi形状记忆合金环作耗能元件的被动减振装置,并对装置的力学和减振性能进行了初步评价.对加载和卸载过程中力位移曲线进行了研究,当不对环水平方向的变形进行约束时,力位移曲线为近似于直线且接近重合的2条曲线;若应用滑块对环水平方向的变形进行约束,在力位移曲线上能形成滞回环,且随位移增加变得更饱满.滞回环的加载和卸载部分不与横坐标平行,而是2条斜线,装置受力时的这种变形特点,可提高装置的抗过载能力.增加环的数量,在相同位移时装置的耗能量明显增加.
The passive damping device using TiNi shape memory alloy ring as energy dissipating component was designed and the mechanical and damping properties of the device were preliminarily evaluated.During the loading and unloading process, the force displacement curve was studied, , The force displacement curve is approximate to the straight line and nearly coincides with two curves. If the slider is used to constrain the deformation in the horizontal direction of the ring, a hysteresis loop can be formed on the force displacement curve and becomes larger as the displacement increases More full hysteresis loop loading and unloading part of not parallel with the horizontal axis, but two diagonal lines, when the device is subjected to this deformation characteristics, can improve the anti-overload capacity of the device to increase the number of rings in the same displacement The energy consumption of the device is significantly increased.