| Faced with frequent earthquake disasters in recent years,more and more structures adopt vibration control technology to improve the seismic performance of the structure and various energy dissipation devices have also been applied in practical projects.With the advancement of simple structure,low cost and easy maintenance,see the limitations of passive devices.In recent years,with the rapid development of science and technology,the construction structure is facing higher requirements.Scholars have turned their attention to the research and development of intelligent materials and control devices.Research on adaptive damping control under different types of earthquakes is also of great significance.The main contents of this paper include the following aspects:(1)The experiment had studied the mechanical properties of Shape Memory Alloy wire and investigated the equivalent line secant stiffness,phase change stress,and single-turn cycle of the Shape Memory Al oy during cyclic loading and unloading.(2)According to the experimental data of the shape memory alloy,Adaptive Neuro-Fuzzy Inference System was used to establish the mechanical model of the shape memory alloy.The stress-strain curves of the shape memory alloy obtained by the under different loading frequencies and strain amplitudes,and compared with the experimental results.The shape memory alloy-variable friction damping is established and the mechanical model of the device and gives the specific values of the parameters.(3)Establish the motion equations of different shock-absorbing systems under earthquake,and the response and energy of the structures under earthquake action are compared.With the same evaluation index,the response and energy of various energy-dissipation and shock-absorbing structures under different earthquakes can be compared and analyze the shock absorption effects of various energy-consuming devices under different earthquakes. |
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