摘要
机车车辆噪声、振动和不平顺问题对司乘人员的舒适度越来越重要。针对某型干线内燃机车运行过程中出现的司机室振动问题,通过机车负载试验、模态试验分析司机室振动的频谱特性及其与车体振动的关联;建立整车的有限元模型计算结构模态和柴发机组激励产生的谐响应,并分析结构参数摄动对司机室振动特性的影响。结果显示,整车在16.43 Hz存在谐响应峰值,司机室振动主要由柴发机组1倍频激励下的整车耦合振动引起,材料厚度和刚度参数摄动对司机室的振动会产生显著影响。
The NVH(noise,vibration and harshness)of rolling stocks has a large influence on the comfort of drivers and passengers.In order to pinpoint the sources of cab vibration during the operation of a main line diesel locomotive,the frequency spectrum characteristics of cab vibration and its relationship with vehicle body vibration were analyzed by locomotive load test and modal test.The finite element model of the whole vehicle was established to calculate the structural modals and harmonic responses of diesel generator set excitation,and the influence of structural parameter perturbation on cab vibration characteristics was analyzed.The results show that there is a peak value of harmonic response at 16.43 Hz,and the cab vibration is mainly caused by the coupled vibration of the whole vehicle under the excitation of the 1st-order frequency of diesel generator set,and the material thickness and stiffness parameter perturbation also have a significant impact on the cab vibration.
作者
张文春
蔡延年
王大鹏
李忞
石巍
ZHANG Wenchun;CAI Yannian;WANG Dapeng;LI Min;SHI Wei(CRRC Dalian Co.,Ltd,Dalian 116022,Liaoning,China)
出处
《噪声与振动控制》
CSCD
北大核心
2021年第5期192-196,共5页
Noise and Vibration Control
关键词
振动与波
机车司机室
振动试验
有限元分析
参数摄动
vibration and wave
locomotive cab
vibration experiments
finite element analysis
parameter perturbation
