Abstract
The lightweight design and miniaturization of metallic dampers have broad application prospects in seismic engineering. In this study, the superplastic property and the maximum energy dissipation capacity per unit mass of low-yield-strength steel (LYS) are investigated via comparison with those of several common metallic damping materials by tests. Additionally, the boundary constraints of an LYS shear panel damper are studied further. Our experimental results suggest that LYS is an excellent damping material for achieving the lightweight design goal. A novel design of a lightweight damper, having excellent deformation ability and robust mechanical properties, is presented. The findings of this study are expected to be useful in understanding the lightweight design of dampers.
Highlights
IntroductionWith the aim of mitigating the effects of earthquake disasters, both active and passive dampers have been widely adopted as energy absorption devices in civil engineering
In recent years, several large earthquakes have occurred worldwide
LYS100 undergoes ultrashear strain of LYS100 is around 16 times its peak tension strain. These results show that LYS100 plastic deformation under shear
Summary
With the aim of mitigating the effects of earthquake disasters, both active and passive dampers have been widely adopted as energy absorption devices in civil engineering. Passive dampers play a key role on account of their technical simplicity and wide applicability. A metallic damper is preferred in practical engineering owing to its high reliability and good low-cycle fatigue properties. Metallic dampers can be used to absorb energy by reciprocal bending [1,2,3], tension-compression [4,5,6], and shear [7,8]. Methods, as well as by various combinations of these three methods.
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