中文摘要：

形状记忆合金作为一种新型的功能性材料,以其高阻尼特性被广泛的研究,并在结构振动控制方面取得了一定的应用。本文以形状记忆合金悬臂梁作为研究对象,以试验的方式测得形状记忆合金悬臂梁固定端和自由端的响应信号,从而得到其频率响应函数。然后,通过LMS Test Lab模态分析模块的Poly MAX法进行模态识别,得到形状记忆合金悬臂梁的固有频率和模态阻尼比。实验结果表明,在试验模拟工况下,形状记忆合金悬臂梁在10—65Hz的频率范围内能够很好的减弱振动源对该悬臂梁自由端的影响。

英文摘要：

The shape memory alloy,as a novel functional material,is widely studied and has been applied tothe vibration control of structure due to its high damping characteristics. In this paper,the shape memory alloy cantilever beam is used as the research subject. The response signal of the fixed end and free end of the SMA cantilever beam is measured by experiments,and the frequency response function of the SMA cantilever beam is calculated. Moreover,the modal identification is carried out using Poly MAX method of modal analysis module of the LMS Test Lab,and the natural frequency and modal damping ratio of the SMA cantilever beam are attained. As the experimental results show,under the condition of experiment simulation,the SMA cantilever beam can effectively weaken the impact of vibration source on the end of beam in the frequency range of 10 to 65 Hz.