调车冲击工况下MT-2车辆缓冲器容量需求数值模拟

doi:10.3901/JME.2019.14.122

机械工程学报 ›› 2019, Vol. 55 ›› Issue (14): 122-131.doi: 10.3901/JME.2019.14.122

调车冲击工况下MT-2车辆缓冲器容量需求数值模拟

赵旭宝¹, 魏伟², 张军², 马永峰³

1. 大连交通大学软件学院大连 116028;
2. 大连交通大学机车车辆工程学院大连 116028;
3. 大连交通大学理学院大连 116028

收稿日期:2018-07-19 修回日期:2018-12-26 出版日期:2019-07-20 发布日期:2019-07-20
通讯作者: 赵旭宝(通信作者),男,1978年出生,博士研究生。主要研究方向为列车纵向动力学。E-mail:zhaoxubao7005@163.com
作者简介:魏伟,男,1963年出生,博士,教授,博士研究生导师。主要研究方向为列车纵向动力学、空气制动系统仿真。E-mail:weiwei43@163.com;张军,男,1979年出生,博士,副教授,硕士研究生导师。主要研究方向为列车纵向动力学。E-mail:armyzhang@sina.com;马永峰,男,1977年出生,博士,讲师。主要研究方向为微分方程分支理论。E-mail:mayongfeng@djtu.edu,cn
基金资助:
中国铁路总公司科技研究开发计划课题（2015J007-O）和铁道部科技研究开发计划课题（2012J012-F）资助项目。

Numerical Simulation on Required Capacity of MT-2 Vehicle Draft Gear under Shunting Impact Condition

ZHAO Xubao¹, WEI Wei², ZHANG Jun², MA Yongfeng³

1. Institute of Software Technology, Dalian Jiaotong University, Dalian 116028;
2. College of Railway Vehicle Engineering, Dalian Jiaotong University, Dalian 116028;
3. School of Science, Dalian Jiaotong University, Dalian 116028

Received:2018-07-19 Revised:2018-12-26 Online:2019-07-20 Published:2019-07-20

摘要/Abstract

摘要： 根据调车冲击车辆受力特点及缓冲器工作机理，构建车辆冲击动力学模型和详细的摩擦式缓冲器模型，开发重载列车冲击仿真系统，分别研究了不同车辆编组连挂数量、不同车钩间隙、不同车辆总重、不同冲击速度及不同车体刚度对缓冲器容量需求的影响。结果表明：调车冲击时，冲击车与被冲击车碰撞冲击面处缓冲器容量需求最多，且在0 mm车钩间隙下3车冲3车时该值达到最大值，而后缓冲器容量需求不随车辆编组数量增加而增大；车钩间隙对缓冲器容量需求影响较大，随车钩间隙增大缓冲器容量需求呈非线性减小；车辆总重和调车冲击速度是影响缓冲器容量需求的主要因素，缓冲器容量需求分别与车辆总重和速度平方成正比；车体刚度对缓冲器容量需求影响较明显，在考虑车体刚度影响情况下，缓冲器容量需求比未考虑车体刚度影响平均小8.8%。表明缓冲器容量的确定应综合考虑各种因素的影响且至少满足0 mm间隙下3车冲3车的容量需求。为重载列车缓冲器容量的确定和新型缓冲器容量的设计提供理论依据。

关键词: 调车冲击, 缓冲器, 缓冲器容量, 重载列车, 纵向动力学

Abstract: According to longitudinal load characteristics of vehicle and mechanism of dry frictional draft gear under shunting impact, the dynamic model of shunting impact, the dry frictional draft gear model was built and the impact simulation system of heavy haul trains was developed. The influences of the coupler slack, the numbers of grouped vehicles, the vehicle's weight, the impact speeds and the vehicle's structure stiffness on the required capacity of draft gear are studied. The simulation results show as follows:the most required capacity of draft gear is the draft gear between the impacting and impacted vehicle when the train is shunting. When both the impacting vehicles and impacted vehicles consist of three vehicles respectively, the draft gear reaches the maximum required capacity under the 0 mm coupler slack, and then it is not related to the number of vehicles as the vehicles increasing. The coupler slack has great effect on the required capacity of draft gear, and it decreases nonlinearly with the increase of the coupler slack. The vehicle's weight and the impact speeds of shunting are the main factors affecting the required capacity of draft gear, and it is respectively proportional to the total weight and the square of the impacting velocity of the vehicle. The influence of the vehicle structure stiffness on the required capacity of draft gear is obvious. Considering the influence of the vehicle structure stiffness, the required capacity is 8.8% smaller than when this is not considered. The results show that the influence of various factors should be taken into consideration in the determination of draft gear capacity, and at least meeting the required capacity of draft gear under 0 mm coupler slack and the impacting vehicles and impacted vehicles consist of three vehicles respectively. This work provides theoretical basis for the determination of the draft gear capacity of heavy haul trains and the design of new draft gear capacity.

Key words: draft gear, draft gear capacity, heavy haul trains, longitudinal dynamics, shunting impact

中图分类号:

U270

赵旭宝, 魏伟, 张军, 马永峰. 调车冲击工况下MT-2车辆缓冲器容量需求数值模拟[J]. 机械工程学报, 2019, 55(14): 122-131.

ZHAO Xubao, WEI Wei, ZHANG Jun, MA Yongfeng. Numerical Simulation on Required Capacity of MT-2 Vehicle Draft Gear under Shunting Impact Condition[J]. Journal of Mechanical Engineering, 2019, 55(14): 122-131.

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调车冲击工况下MT-2车辆缓冲器容量需求数值模拟

Numerical Simulation on Required Capacity of MT-2 Vehicle Draft Gear under Shunting Impact Condition

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