摘要
提出了一种兼具自复位、变摩擦和高耗能于一体的新型形状记忆合金-弧面摩擦复合阻尼器,该阻尼器由形状记忆合金复位装置和变摩擦耗能装置两部分组成。基于Brinson模型和摩擦学建立了该阻尼器的恢复力模型,并利用Simulink对其力学性能进行了数值模拟。研究结果表明:所建立的恢复力模型能够很好地描述该阻尼器的力学性能;随着位移幅值的增加,阻尼器的耗能能力逐渐增大,加载频率对其耗能能力影响不大,在建筑结构中能够保持稳定的耗能特性,具有一定的工程应用前景。
A new shape memory alloy-arc friction composite damper with self reset,variable friction and high energy consumption is presented in this paper.The damper consists of two parts:shape memory alloy reset device and variable friction energy dissipation device.Based on the Brinson model and tribology,the restoring force model of the damper is established,and its mechanical properties are simulated by simulink.The results show that the restoring force model can well describe the mechanical properties of the damper;with the increase of displacement amplitude,the damper energy dissipation capacity increases,the loading frequency has little influence on the energy dissipation capacity.This damper can maintain the stability of the consumption characteristics in building structure.And it has a certain application prospect in engineering.
作者
杜红霞
DU Hongxig(Departwent of civil engineering,Hetao colleye,Inner Mongolig Bayan Nur 015001 , China)
出处
《结构工程师》
北大核心
2019年第2期166-170,共5页
Structural Engineers
关键词
结构振动控制
形状记忆合金
变摩擦
自复位
仿真分析
structure vibration control
shape memory alloy
variable friction
self reset
simulation analysis
