Active Vibration Control of a Railway Vehicle Carbody Using Piezoelectric Elements  

作　　者：Habibollah Molatefi Pejman Ayoubi Hozhabr Mozafari 

机构地区：[1]Railway Engineering School, Iran University of Science and Technology [2]Department of Mechanical & Materials Engineering,University of Nebraska-Lincoln

出　　处：《Chinese Journal of Mechanical Engineering》2017年第4期963-972,共10页中国机械工程学报（英文版）

摘　　要：In recent years and according to modem trans- portation development, rail vehicles are manufactured lighter to achieve higher speed and lower transportation costs. On the other hand, weight reduction of rail vehicles leads to increase the structural vibration. In this study, Active Vibration Control of a rail vehicle using piezo- electric elements is investigated. The optimal control employed as the control approach regard to the first two modes of vibration. A simplified Car body structure is modeled in Matlab using the finite element theory by considering six DOF beam element and then the Eigen functions and mode shapes are derived. The surface roughness of different classes of rail tracks have been obtained using random vibration theory and applied to the secondary suspension as the excitation of the structure; Then piezoelectric mounted where the greatest moments were captured. The effectiveness of Piezoelectric in structural vibrations attenuation of car body is demon- strated through the state space equations and its effect on modal coefficient.In recent years and according to modem trans- portation development, rail vehicles are manufactured lighter to achieve higher speed and lower transportation costs. On the other hand, weight reduction of rail vehicles leads to increase the structural vibration. In this study, Active Vibration Control of a rail vehicle using piezo- electric elements is investigated. The optimal control employed as the control approach regard to the first two modes of vibration. A simplified Car body structure is modeled in Matlab using the finite element theory by considering six DOF beam element and then the Eigen functions and mode shapes are derived. The surface roughness of different classes of rail tracks have been obtained using random vibration theory and applied to the secondary suspension as the excitation of the structure; Then piezoelectric mounted where the greatest moments were captured. The effectiveness of Piezoelectric in structural vibrations attenuation of car body is demon- strated through the state space equations and its effect on modal coefficient.

关 键 词：Active vibrationRandom vibrations Modalmethodcontrol PIEZOELECTRIC ANALYSIS Finite element 

分 类 号：U270.16[机械工程—车辆工程]