实模态理论在双轴车辆振动分析中的应用  

Application of the Actual Modal Theory in Vibration Analysis of the Double Axles Vehicles

作　　者：郭维俊[1] 

机构地区：[1]甘肃农业大学

出　　处：《兰州铁道学院学报》1996年第1期87-93,共7页Journal of Lanzhou Railway University

摘　　要：将双轴四轮车辆简化成垂向跳动、横向摆动和纵向颠簸的受四点随机激励的三自由度单级隔振系统，运用实模态理论求得了隔振系统的模态矩阵和正则模态方程．本文结果适用于任何双轴车辆，对进一步研究车辆振动问题具有借鉴作用．In this paper.the double axles vehicles were simplified into single grade isolation vibration system with three degrees of freedom at vertical,lateral,longitudinal vibrations induced by four points random excitation.The space vibration equations of the isolated vibration system are established.The modal matrix and the normal modal equation of the isolation system of the double axles four-wheel vehicle were obtained by applying the actual modal theory.The results derived from this study are suitable for any double axles vehicles.It will be a reference for studying vehicle vibration problem with significant value.

关 键 词：模态分析 随机振动 铁路 双轴车辆 车辆 

分 类 号：U270.11[机械工程—车辆工程]