| The structure of the engineering structure component will crack and have different degrees of damage by the influence of earthquake, strong wind or other natural disasters, the damper which is used as the structure’s shock absorber is a kind of simple practical and convenient to construction method of a kind of effective vibration control.This paper compares a viscous damper and a new type of metal yield damper- SMA damper on the seismic respective superiority, and the two kinds of seismic behavior of the damper is analyzed.This article mainly introduced the basic structure of two kinds of dampers, damping theory and constitutive model,to introduce the main parameters of damper and the constitutive modal of stress equation, and discussed the influence on structure seismic of layout of damper position and the layout scheme of the damper.This article established a four layers framework project example by the finite element analysis software,the same position in the structure of the installation of the structure of different damper model for modal analysis and nonlinear time history analysis, comparing the several kinds of modals of the size of the acceleration and displacement of the strain in each layer, the data were analyzed.Viscous dampers and SMA damper for vibration reduction effect of frame structure under the action of seismic wave, and the setting position of damper on the framework of the influence of structural damping effect.Analysis of the data found that SMA damper’s energy dissipation effect is more outstanding, especially in the low frequency of seismic load stage, the SMA damper in structural vibration displacement and acceleration of the structure during the weakening effect is more ideal.Under seismic load at the same time, the force of the SMA damper force-displacement also curve present a good hysteretic energy dissipation characteristics and the reset feature.Instructions for this article selected engineering instance setup SMA damper can more effectively improve the seismic performance of the structure. |
