中央牵引装置强度仿真及试验对比研究
冯征1，肖襄雨2，张华丽1，张国平1
（1.中车青岛四方机车车辆股份有限公司，山东 青岛 266111；2.西南交通大学 牵引动力国家重点实验，四川 成都 610031）
摘要：中央牵引装置是连接车体和转向架的专用装置，在车辆系统中起到纵向牵引载荷传递、横向限位等重要作用。本文依据EN13749对某动车组中央牵引装置进行有限元分析，进而对其进行了静强度和1000万次的疲劳强度试验，同时对比了有限元仿真和静强度试验结果。计算分析结果表明，牵引装置的静强度结果都小于相应材料的许用应力，最大应力出现在中心销腹板折弯处304.60 MPa和牵引拉杆端头处314.54 MPa；在Goodman曲线图中进行疲劳评估均落在包络线内，满足疲劳评估要求；对比静强度和有限元仿真结果，仿真和试验结果控制在20%以内；对牵引装置进行1000万次疲劳试验后进行无损检测，无任何裂纹，满足疲劳试验要求。
关键词：中央牵引装置；有限元仿真；静强度；疲劳强度
中图分类号：TP391.9 文献标志码：A doi：10.3969/j.issn.1006-0316.2022.04.006
文章编号：1006-0316 (2022) 04-0031-07
Strength Simulation and Strength Test Comparison of Central Traction Device
FENG Zheng1，XIAO Xiangyu2，ZHANG Huali1，ZHANG Guoping1
( 1.CRRC Qingdao Sifang Co., Ltd., Qingdao 266111, China; 2. State Key Laboratory of Traction Power, Southwest Jiaotong University, Chengdu 610031, China )
Abstract：The central traction device is used to connect the car body and bogie, which can transmit the longitudinal traction loads and limit the lateral displacement. This paper conducted the finite element analysis for the central traction device of a certain type of EMU based on EN13749, then the static strength and 10 million times of fatigue strength test were carried out, with the comparison between the results of simulation and test. The simulation results demonstrate that the static strength stress of the central traction device are less than its allowable stress, where the maximum stress of the structure are in the web bending place with 304.6 MPa and the top of the traction rod with 314.54 MPa. The fatigue assessment is carried out in Goodman curve, which falls within the envelope and meets the requirements of fatigue assessment. In addition, the comparison illustrates that the error between the results of the test and the simulationare in the range of 20%. Finally, the non-destructive detection was conducted for the 10 million fatigue test of the central traction device, and no cracks were found, proving that the device can reach the fatigue test requirement.
Key words：central traction device；finite element analysis；static strength；fatigue strength test
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收稿日期：2021-05-13
基金项目：中国铁路总公司科技研究开发计划课题（P2018J003-1）
作者简介：冯征（1989－），男，山东泰安人，硕士研究生，主要研究方向为动车组转向架检修技术，E-mail：17789605207@163.com；肖襄雨（1997－），女，湖北襄阳人，硕士研究生，主要研究方向为轮对耐久性仿真与试验研究；张华丽（1980－），女，河南周口人，硕士研究生，主要研究方向为动车组转向架检修技术；张国平（1986－），男，四川南充人，高级工程师，主要研究方向为动车组转向架设计及检修技术。
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