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本文提出一种利用马氏体形状记忆合金(SMA)拉索减小框架结构振动响应的方法。首先,根据Brinson一维SMA本构关系,提出一种SMA滞回模型,并确定了有关参数;其次,提出一种关于马氏体SMA拉索的有限元分析模型,并对安装有SMA拉索的结构进行有限元数值分析。分析时,考虑到SMA温度、初始应力状态、热力学特性,以及不同强度和频谱的地震波输入影响;最后,为了验证所提出的方法的有效性。数值分析表明:采用SMA拉索改变结构刚度的方法能够有效减小结构的振动响应。
In this paper, a method of reducing the vibration response of frame structures by using SMA SMA cables is proposed. First, according to the Brinson one-dimensional SMA constitutive relation, an SMA hysteresis model is proposed and the related parameters are determined. Secondly, a finite element analysis model about the martensitic SMA cable is proposed. The structure of finite element numerical analysis. The analysis takes into account the influence of SMA temperature, initial stress state, thermodynamic properties, and seismic wave input with different intensities and spectra; and finally, to verify the effectiveness of the proposed method. Numerical analysis shows that using SMA cables to change the structural stiffness can effectively reduce the structural vibration response.