摘要
以CRH3型高速列车头车与标准CHN60型轨道为研究对象,利用动力学软件RecurDyn建立车辆-轨道耦合动力学模型;采用弹簧阻尼模型定义轮轨接触关系,跟踪检测服役列车不同运行里程下的车轮粗糙度,根据相关文献的轮轨接触刚度计算结果,对高速轮轨滚动接触动力学性能进行研究,并取该头车的后转向架二位轮对处结果进行数据分析。计算结果表明:随着高速列车运行里程的增加,车轮表面粗糙度减小,使得轮轨接触刚度增大;轮轨横向力随着运行里程的增加先减小后增大,其频率主要分布在10 Hz以下的低频段;轮轨垂向力随着运行里程的增加而增加,并在5、10、28 Hz附近有比较明显的主频率段;轮轨纵向力主要由切向蠕滑力的纵向分量构成,与轮轨垂向力在时域分布和频域分布上均非常相似。
With the head vehicle of CRH3 high speed train and CHN60 standard railway as the research object,a vehicle-track coupled dynamic model was built by using dynamic software RecurDyn.The wheel-rail contact relationship was defined by the spring damping model,and the roughness of wheels under different operation mileage was measured.Based on the calculation results of wheel-rail contact stiffness by relevant literatures,the dynamic properties of high-speed wheelrail rolling contact was studied,and the result of second wheel pair of back bogie of the head vehicle was selected for data analysis.The results show that with the increase of operation mileage of high-speed train,the roughness of wheel surface is decreased and the contact stiffness between wheel and rail is increased.The wheel-rail lateral force is decreased first and then increased with the increase of operation mileage,and its frequency is mainly distributed in low frequency segment below 10 Hz.The wheel-rail vertical force is increased with the increase of operation mileage,and there are obvious main frequency bands near 5 Hz,10 Hz and 28 Hz.The wheel-rail longitudinal force is mainly composed of the longitudinal component of tangential creep force,which is very similar to the wheel-rail vertical force in the distribution of time and frequency domain.
作者
肖乾
蒋吴曦
李超
王丹红
罗志翔
XIAO Qian;JIANG Wuxi;LI Chao;WANG Danhong;LUO Zhixiang(Key Laboratory of Ministry of Education for Conveyance and Equipment,East China Jiaotong University,Nanchang Jiangxi 330013,China)
出处
《润滑与密封》
CAS
CSCD
北大核心
2019年第11期79-84,共6页
Lubrication Engineering
基金
国家自然科学基金项目(51565013)
江西省杰出青年基金项目(20171BCB23058)
关键词
轮轨关系
动力学分析
弹簧阻尼模型
接触刚度
高速列车
wheel-rail relationship
dynamic simulation
spring damping model
contact stiffness
high-speed train