Research on the Improvement of Speed Increased Passenger Car Bogie Frame Reliability Based on Load Spectrum

被引：0
|
作者：
Wang B. [1 ]
Sun S. [1 ]
Li Q. [1 ]
Tang Q. [1 ]
机构：
[1] School of Mechanical, Electronic and Control Engineering, Beijing Jiaotong University, Beijing
来源：
Tiedao Xuebao/Journal of the China Railway Society | 2019年 / 41卷 / 02期
关键词：
Damage; Fatigue; Frame; Load spectrum; Reliability;
D O I：
10.3969/j.issn.1001-8360.2019.02.004
中图分类号：
学科分类号：
摘要：
During the service life of the speed increased passenger car bogies, the connecting part of the cross and side beams would generate fatigue cracks first. Despite repeated local reinforcements, insufficient reliability of bogie frame still remains. This demonstrates that the actual operation loads are not the input condition of bogie design, and the load standards of bogie frame specified by the anti-fatigue design specifications cannot fully cover the actual operation environment of the current vehicles. Therefore, it is necessary to study the bogie loads under the actual operation environment to improve the fatigue reliability of bogie frame to ensure operation safety. In this paper, a high-precision test frame was calibrated to establish the fatigue damage transfer relationship between the frame load systems and the fatigue control parts. The test frame was installed in an operating train, and multiple round-trip tracking tests were conducted on the track lines where cracks occurred frequently to obtain the load-time history and dynamic stress of the fatigue control parts of the frame. After that the load spectrum was established to improve the reliability of bogie frame. Besides, the stress of the frame fatigue control parts extracted from the load spectrum was also decreased by the application and continuously optimization of reinforcing structure to complete the bogie frame structure optimization. At last, the results of the track test show that the reliability of the bogie frame is improved systematically. © 2019, Department of Journal of the China Railway Society. All right reserved.
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页码：23 / 30
页数：7
相关论文
共 13 条
  • [1] UIC615/4: 2003 Motive Power Units-bogie and Running Gear-bogie Frame Structure Strength Tests, (2003)
  • [2] BS 7608: 1993 Code of Practice for Fatigue Design and Assessment of Steel Structures, (1993)
  • [3] EN 13749: 2005 Railway Applications-Methods of Specifying Structral Requirements of Bogie Frames, (2005)
  • [4] Yu L., Chan T.H.T., Moving Force Identification Based on the Frequency-time Domain Method, Journal of Sound and Vibration, 261, pp. 329-349, (2003)
  • [5] Law S.S., Bu J.Q., Zhu X.Q., Et al., Vehicle Axle Loads Identification Using Finite Element Method, Engineering Structures, 26, pp. 1143-1153, (2004)
  • [6] Ren Z., Sun S., Li Q., Axle Spring Load Test and Dynamic Characteristics Analysis of High Speed EMU, Chinese Journal of Mechanical Engineering, 46, 10, pp. 109-115, (2010)
  • [7] Wang W., Wang Y., Sun S., Et al., Long-term Load Spectrum Test of High-speed Train Bogie, Journal of Southwest Jiaotong University, 50, 1, pp. 84-89, (2015)
  • [8] Li F., Wu P., Zeng J., Compilation Method of Fatigue Test Load Spectrum for Underfloor Equipment Bearing Structure, Chinese Journal of Mechanical Engineering, 52, 24, pp. 99-106, (2016)
  • [9] Wen X., Miao L., Identif Ication of Structural Dynamic Load from Measured Strain Response, Journal of the China Railway Society, 22, 6, pp. 36-39, (2000)
  • [10] Liu K., Yan C., Zhang S., Bench Calibration of Load Spectrum Measurement for Fighter Airplanemain Undercarriage, Journal of Jilin University(Engineering and Technology Edition), 36, 6, pp. 1025-1028, (2006)
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