Abstract
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.
Highlights
Shape memory alloy (SMA) is an innovative material
Consisting of the superelastic shape memory alloy (SMA) wire and the friction element in series, the damper can adjust the working status of the energy dissipation elements automatically according to the seismic responses of the structure, and has simple configuration and economical application
Seismic elastic-plastic time history response analysis program and energy analysis program of the damped structure were designed by Matlab
Summary
Shape memory alloy (SMA) is an innovative material. It shows a large reversible strain due to superelasticity. Energy dissipation element of damper (SMA or SMA and other energy dissipation materials) acts on the structure at the same time, and these dampers cannot automatically adjust the energy dissipation according to seismic response of the structure. The abilities of SMA dampers are not fully released under small earthquake or moderate earthquake It is not economic because the SMA wires are expensive. The paper proposed an innovative shape memory alloy (SMA)-friction damper. Consisting of the superelastic SMA wire and the friction element in series, the damper can adjust the working status of the energy dissipation elements automatically according to the seismic responses of the structure, and has simple configuration and economical application. 804 The Open Mechanical Engineering Journal, 2014, Volume 8 on vibration control of a three-story shear-type symmetric structure with the damper were carried out
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