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Control devices incorporated with shape memory alloy

Xue Suduo (ѦËØîì) and Li Xiongyan (ÀîÐÛÑå)

The College of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100022, China
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Abstract: Shape Memory Alloy (SMA) is a type of material that offers some unique characteristics for use in devices for vibration control applications. Based on SMA's material properties, four types of control devices that incorporate NiTi SMA wires are introduced in this paper, which include three types of dampers (SMA damper, SMA-MR damper and SMA-friction damper) and one kind of isolation bearing (SMA-rubber bearing). Mechanical models of these devices and their experimental verifications are presented. To investigate the control performance of these devices, the SMA-MR damper and SMA-rubber bearing are applied to structures. The results show that the control devices could be effective in reducing the seismic response of structures.

Keywords: control device; shape memory alloy; damper; vibration control; seismic isolation boaring