【摘要】 本文利用ABAQUS模拟设置预紧位移的SMA环簧阻尼器力学性能，采用初始消压荷载修正公式修正了有限元模拟结果。在此基础上，探究了有无预紧位移对SMA环簧阻尼器滞回性能的影响。基于ABAQUS的模拟结果，在开源软件OpenSees中对无控钢框架和安装SMA环簧阻尼器的钢框架进行地震响应时程分析。结果表明：有限元模拟结果能够反映出SMA环簧阻尼器的自复位性能，初始消压荷载修正公式能一定程度减小不完整马氏体相变造成的有限元模拟与试验结果的误差。设置预紧位移后SMA环簧阻尼器的初始刚度、最大承载力和耗能能力明显提高。在相同大小的加载位移下，预紧后的SMA环簧阻尼器展现出更加高效的耗能能力。安装SMA环簧阻尼器能够有效降低结构的地震响应，提高结构的自复位能力，减小震后的残余变形。更多还原

【Abstract】 In this paper, ABAQUS is used to simulate the mechanical properties of SMA ring spring damper with preload displacement, and the finite element simulation results are modified by the initial pressure relief load correction formula. On this basis, the influence of preload displacement on hysteresis performance of SMA ring spring damper is investigated. Based on the simulation results of ABAQUS, the seismic response time history analysis of steel frames without control and steel frames with SMA ring spring dampers are performed in OpenSees. The results show that the finite element simulation results can reflect the self-centering performance of SMA ring spring damper, and the correction formula of initial pressure relief load can reduce the error between finite element simulation and test results caused by incomplete martensitic transformation to a certain extent. The initial stiffness, maximum bearing capacity and energy dissipation capacity of SMA ring spring damper are improved obviously after setting preload displacement. Under the same load displacement, SMA ring spring damper with preloaded displacement exhibits more efficient energy dissipation capacity. The installation of SMA ring spring damper can effectively reduce the seismic response of the structure, improve the self-centering ability of the structure, and reduce the residual deformation after the earthquake.更多还原