中文摘要：

应用Ti-Ni形状记忆合金环作耗能元件设计了一种新型的阻尼器，介绍了Ti-Ni合金环的制备及热处理工艺，并测试了其力学性能。分析了加载卸载过程中力一位移曲线与环内应力的关系。当无档板对Ti-Ni合金环进行横向约束时，由于环内的应力没达到应力诱发马氏体相变的临界应力，表现为线弹性，并且回复力非常小。当档板对环施加水平约束，出现滞迟耗能。随着位移的增加，回复力和滞迟环的面积都大幅度增加，滞迟环形状发生变化。小位移时，滞迟环为透镜状，当位移达到一定值时，滞迟环为倒三角形。倒三角形的滞迟环与双折线形滞迟环相比，在振动控制过程中具有更好的阻尼效果。

英文摘要：

Using Ti-Ni shape memory alloy （SMA） as the energy dissipation rings,a new type of damper is designed. The preparation and heat treatments of Ti-Ni SMA ring＇s are introduced,and the mechanical properties of the damper are tested. The relationship between the restoring force-displacement curve and the stress in the ring during loading and unloading was analyzed. When the deformation of the ring is not restricted in horizontal direction,the restoring force-displacement curve is linear elasticity,and the restoring force is very little because of the stress in the ring less than the critical value of the stress-induced martensite transformation. When there is a restriction,a hysteretic loop is formed in the restoring force-displacement curves. With the increasing of displacement,the area of the hysteretic loop and the restoring force increase. Moreover, the shape of hysteretic loops is also changed. When the displacement is small, the shape looks like a lens. When the displacement is big enough to reach the critical value, the shape looks like an inverse triangle. In the process of vibration controlling, the damping effect of the dampers with inverse triangle shape restoring force-displacement curve is better than that one with the dual-linear shape curves.