Theoretical Study on Vibration Control of Symmetric Structure with Shape Memory Alloy (SMA)-Friction Damper

Yunli Gao1, Wenjie Ren*, 2
1 Department of Civil Engineering and Architecture, Dalian Nationalities University, Dalian, Liaoning, 116600, China
2 College of Civil Engineering, Hebei University of Technology, Tianjin, 300401, China

© 2014 Gao and Ren

open-access license: This is an open access article distributed under the terms of the Creative Commons Attribution 4.0 International Public License (CC-BY 4.0), a copy of which is available at: ( This license permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

* Address correspondence to this author at the College of Civil Engineering, Hebei University of Technology, Tianjin, 300401, P.R. China; Tel: +86(13662139163); E-mail:


The paper proposed an innovative shape memory alloy (SMA)-friction damper. The damper consisted of the superelastic SMA wire and the friction element in series. According to the working mechanism of the damper, the paper set up the mechanical model of the damper. Seismic elastic-plastic time history response analysis program and energy analysis program of the damped structure were designed. The numerical calculations of the vibration control of a threestory shear-type symmetric structure with the damper were carried out. The results indicated that the damper can decrease the displacement and the inter-story displacement of the structure effectively, but increase the acceleration of the structure comparing with uncontrolled structure. The SMA-friction damper can not only adjust the working status of the energy dissipation elements automatically according to the seismic responses of the structure, but also has some advantages as simple configuration and economical application.

Keywords: Mechanical model, Shape memory alloy-friction damper, Symmetric structure, Vibration control..