Development of self-centering dampers incorporating shape memory alloy ring springs

摘要：

　　This paper presents the application of innovative superelastic shape memory alloy(SMA)ring springs for developing self-centering dampers.The SMA ring springs are believed to have several advantages over other SMA components such as ease of installation,fracture free,and high material utilization efficiency.The study commences with an introduction of the fundamental working mechanism of SMA ring springs,and this is followed by a detailed discussion on the design and fabrication of self-centering dampers incorporating the SMA ring springs.Subsequently,a proof-of-concept damper specimen is physically tested,shedding further light on the practical application of the ring springs for high-performance seismic resisting devices.The damper specimen shows favorable cyclic behavior,with the majority of the deformation demand resisted by the SMA ring springs.The remaining components of the damper generally stay elastic.Driven by the superelastic behavior of SMA,excellent self-centering capability with satisfactory energy dissipation is exhibited.The proposed damper can be used for structural control against strong earthquakes.

关键词： shape memory alloy (SMA) superelastic damper ring spring self-centering experimental investigation

作者: C.Fang W.Wang A.Zhang

作者单位: School of Civil Engineering,Tongji University,Shanghai 200092,China

会议类型: 国际会议

会议名称: The 7th World Conference on Structural Control and Monitoring(7WCSCM)(第七届结构控制与监测世界大会)

会议地点: 青岛

会议语种:英文

页码: 652-658

在线出版日期: 2018-07-22（万方平台首次上网日期，不代表论文的发表时间）