摘要
利用压电作动器/传感器,对三跨沙漏型点阵桁架夹芯梁进行主动振动控制。基于哈密顿原理建立三跨点阵夹芯梁理论模型,采用假设模态法和标准特征值法完成夹芯梁的动力学分析;并利用有限元法建立仿真模型,验证理论结果的有效性和正确性。此外,用压电材料研究主动振动控制方法对多跨夹芯梁的有效性,其中传感器和作动器分别粘贴在夹芯梁上下表面处。该方法对多跨夹芯梁结构的振动控制有一定指导意义。
The piezoelectric actuator/sensor pairs are employed to actively control the vibration of the three-span sandwich beam with hourglass lattice truss core.Theoretical model of the three-span lattice sandwich beam is established by the Hamilton’s principle.By using the assumed mode method and the standard eigenvalue method,the dynamic analysis of the sandwich beam structure is finished.The simulation model is built by using FEM(finite element method)to verify the effectiveness and correctness of the theoretical results.Furthermore,the piezoelectric materials are used to investigate the effectiveness of active vibration control method on multi-span sandwich beams,in which the sensor and actuator are bonded on the top sheet and bottom sheet,respectively.Time-history and frequency response results demonstrate the effectiveness of active vibration control method.This method has certain guiding significance for the vibration control of multi-span sandwich beam structures.
作者
郭振坤
温佳琦
董挺
孙彦飞
GUO Zhenkun;WEN Jiaqi;DONG Ting;SUN Yanfei(Beijing Key Laboratory of Performance Guarantee on Urban Rail Transit Vehicles,Beijing University of Civil Engineering and Architecture,Beijing 102616,China;School of Mechanical Engineering,Beijing Institute of Technology,Beijing 100081,China;North Navigation Control Technology Co.,Ltd.,Beijing 100176,China)
出处
《力学与实践》
北大核心
2023年第3期644-650,共7页
Mechanics in Engineering
基金
国家自然科学基金资助项目(12102031)。
关键词
夹芯梁
三跨
固有频率
主动振动控制
哈密顿原理
sandwich beam
three-span
natural frequency
active control
Hamilton’s principle
