摘要
为分析客运专线车辆在轨道随机不平顺作用下的振动规律,提出了轨道随机不平顺人工短波的概念,给出了短波的模拟样本.在同时考虑轨道高低不平顺和水平不平顺的基础上,采用德国高速低干扰谱与人工短波样本合成的轨道随机不平顺样本作为车辆-轨道耦合振动系统的激励,对车辆的随机振动进行了分析.探讨了轮轨动作用力、车辆各部件随机振动特性及其随列车运行速度变化的规律.研究结果表明,随列车运行速度提高,客运专线车辆各部件的随机振动响应如振动加速度、轮轨力、位移等均呈显著增大的趋势,其中以轮对加速度的变化最为明显,构架加速度、车体加速度和轮轨力次之,位移变化相对较小.
To investigate the vibration regularity of a railway vehicle under track irregularity in a passenger dedicated line（PDL）,a concept of artificial short wave of track irregularity was put forward,and a sample of the artificial short wave was given.Vertical irregularity and cross-level irregularity were considered synchronously.By combining the sample of artificial short wave and the sample of low disturbance irregularity of high-speed railway in German,a simulated sample of track irregularity was established to analyze the railway vehicle vibration laws in a vehicle-track vibration system.The random vibration properties of all vehicle parts and their variation regularities with train speed were investigated.The research results show that the random vibration responses of all parts of a railway vehicle in PDL increase with the increase of train speed.The increase of wheelset acceleration is much more obvious than bogie and body accelerations and wheel/track force,and the increase of displacement is limited.
出处
《西南交通大学学报》
EI
CSCD
北大核心
2010年第2期191-195,212,共6页
Journal of Southwest Jiaotong University
关键词
客运专线
铁道车辆
轨道随机不平顺
随机振动
passenger dedicated line
railway vehicle
track irregularity
random vibration
