有源设备对车辆舒适度指标和设备振动烈度影响分析  

Influence of Equipment Excitation on Vehicle Comfort Index and Equipment Vibration Severity

作　　者：班希翼[1] 余建勇[1] 贺小龙[2] BAN Xi-yi;YU Jian-yong;HE Xiao-long(Zhengzhou Railway Vocational and Technical College, Zhenzhou 451460, China;State Key Laboratory of Traction Power, Southwest Jiaotong University, Chengdu 610031, China)

机构地区：[1]郑州铁路职业技术学院,郑州451460 [2]西南交通大学牵引动力国家重点实验室,成都610031

出　　处：《噪声与振动控制》2017年第4期95-99,共5页Noise and Vibration Control

摘　　要：为了研究有源设备对车辆舒适度指标和设备振动烈度的影响,建立15自由度的车辆-有源设备刚柔耦合系统模型,得到车辆中部、构架上方和有源设备的频域响应函数表达式,并基于新型预测-矫正积分法对车辆-设备耦合系统进行数值求解,采用舒适度指标和振动烈度的频域计算方法得到车辆的舒适度指标和设备振动烈度,研究多个有源设备对车辆振动的影响趋势。结果表明:相比设备自身激励,轮轨激励是引起车辆舒适度指标、设备振动烈度显著变化的主要因素;车辆运行速度对舒适度指标影响明显:速度增加,舒适度指标和振动烈度逐渐增大;设备的悬挂频率对车辆中部舒适度指标影响更明显,冷却风机和变压器悬挂频率的增加最多能使车体中部舒适度指标分别增加0.3和0.5,设备悬挂频率的增加都将使得其自身振动烈度降低,而对其他设备振动烈度影响不大。研究结果可为车下有源设备悬挂参数设计提供参考。In order to study the influence of excitation equipment on the vehicle comfort index and equipment vibration severity,a15-DOF rigid-flexible coupling system model for the vehicle and the excitation equipment is established.Expressions of the frequency response functions at some reference points are derived.Based on the new trial-and-error integration method,the vehicle-equipment coupled system is solved numerically.And the vehicle’s ride comfort index and equipment severity are obtained by frequency domain calculation.The influence of the multi-equipment on the vehicle’s vibration is studied.The result shows that compared to the self-excitation of the equipment,the wheel-rail excitation is the main factor which induce the variation of the ride comfort index and equipment severity.The vehicle’s speed has a significant influence on the ride comfort index.The ride comfort index and the equipment vibration severity increase with the speed increasing.The influence of equipment suspension frequency change on the ride comfort at the middle of the vehicle is more obvious than that at the ends.Increase of the suspension frequencies of the cooling fan and the transmitter will leads to at most0.3and0.5increasing of the ride comfort index respectively in the middle of the vehicle.Increase of the equipment suspension frequencies will reduce the vibration severity for itself only.The result can be used as a reference to equipment suspension parameters design for vehicle vibration control.

关 键 词：振动与波 有源设备 振动烈度 舒适度指标 悬挂参数 

分 类 号：U27[机械工程—车辆工程]