摘要
为了降低受强风、地震和海浪等外部环境荷载作用的高耸风电塔架结构振动响应,针对风电塔架结构内部有限的空间,设计了一种形状记忆合金-悬吊质量摆智能减振系统。在研究其细部构造和工作原理的基础上,利用Matlab中Simulink工具创建了基于Bouc-Wen滞回模型的形状记忆合金-悬吊质量摆减振系统力学模型,通过输入正弦激励信号进行了非线性仿真分析,研究了不同参数取值对形状记忆合金-悬吊质量摆减振系统力学模型的影响,并与试验结果进行了对比。结果表明,形状记忆合金以其独特的超弹性、高阻尼、可恢复大变形等性能在结构智能振动控制领域中具有广阔的应用前景。
In order to reduce vibration responses of wind turbine tower structures(WTTSs)subjected to external environments such as strong winds,earthquakes,and waves,etc.,a smart shape memory alloy(SMA)-suspension mass pendulum damping(SMPD)system was designed for the limited space in WTTSs.Based on studying its detailed structure and working principle,the Matlab Simulink tool was used to establish a mechanical model of the SMA-SMPD system using Bouc-Wen hysteresis model.A nonlinear simulation analysis for the system was carried out by the inputting sinusoidal excitation signals.The effects for different parameters on the mechanical model of the system were studied and validated by experimental results.The results showed that SMA material has a broad application prospect in the field of the structural smart vibration control due to its unique properties of super elasticity,high damping and large deformation recovery,etc.
作者
阎石
牛健
YAN Shi;NIU Jian(School of Civil Engineering Shenyang Jianzhu University;Faculty of Infrastructure Engineering,Dalian University of Technology)
出处
《智能建筑与智慧城市》
2020年第4期13-17,共5页
Intelligent Building & Smart City
基金
国家重点研发项目,项目编号:2018YFC0705602.
关键词
智能材料
形状记忆合金
风电塔架
悬吊质量摆
BouoWen滞回模型
smart material
shape memory alloys(SMAs)
wind turbine tower structure(WTTS)
suspension mass pendulum damping(SMPD)
Bouc-Wen hysteresis model.
