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ZHU Tao, YIN Min-xuan, XU Jing-tao, WANG Chao, XIAO Shou-ne, YANG Guang-wu. Quasi-static force analysis and longitudinal load distribution law of heavy haul freight coupler[J]. Journal of Traffic and Transportation Engineering, 2020, 20(5): 165-175. doi: 10.19818/j.cnki.1671-1637.2020.05.013
Citation: ZHU Tao, YIN Min-xuan, XU Jing-tao, WANG Chao, XIAO Shou-ne, YANG Guang-wu. Quasi-static force analysis and longitudinal load distribution law of heavy haul freight coupler[J]. Journal of Traffic and Transportation Engineering, 2020, 20(5): 165-175. doi: 10.19818/j.cnki.1671-1637.2020.05.013
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Quasi-static force analysis and longitudinal load distribution law of heavy haul freight coupler

doi: 10.19818/j.cnki.1671-1637.2020.05.013

  • State Key Laboratory of Traction Power, Southwest Jiaotong University, Chengdu 610031, Sichuan, China

Funds:

National Natural Science Foundation of China 51675446

Sichuan Science and Technology Program 2019YJ2016

Independent Subject of State Key Laboratory of Traction Power 2017TPL-Z1

More Information
  • Author Bio:

    ZHU Tao(1984-), male, associate researcher, PhD, zhutao034@swjtu.cn

  • Received Date: 2020-05-19
  • Publish Date: 2020-10-25
    Abstract
  • To evaluate the change in the force state of a heavy haul freight coupler under the combined action of coupler clearance, gravity, and longitudinal traction force, a quasi-static force analysis for the coupler was carried out and the longitudinal load distribution law was studied. A strain test at the roots of the upper and lower traction flanges of the knuckle was designed. The relationship between the elastic stain of measuring points and traction force was obtained. The change trends of bearing degrees of the upper and lower traction flanges were analyzed. A detailed force analysis of coupler was carried out. An analytical solution of equivalent forces on the load transfer sites was derived. The boundary conditions of the simulation under different traction forces of coupler were obtained. A simulation analysis of coupler was carried out. The response curve of node strain with the traction force was obtained. Through comparison to the results of strain test, the reliabilities of analytical solution of the equivalent forces on the load transfer sites and simulation model were demonstrated. The influences of some key parameters on the relationship between the traction force and equivalent force were analyzed. The equivalent forces refer to the forces acting on the inner wrist surface and upper and lower traction flanges. Research result shows that the upper shocking platform is stressed when the traction force is smaller than 13.5 kN. The upper and lower traction flanges of the coupler are loaded simultaneously when the traction force is 13.5-1 725.0 kN. With the gradual increase in the traction force, the bearing ratio of lower traction flange gradually decreases and approaches 0.53, while the bearing ratio of upper traction flange increases and approaches 0.47. The bearing ratio is linear with respect to the system parameters. The acting position of equivalent force on the inner wrist surface of knuckle has a large influence on it. These results can be used as a basis for studying the fatigue crack initiation and propagation simulations of couplers and have a high guiding significance for the couplers' service safety.

     

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    • References(30)
  • [1]
    ZOU Rui-ming, MA Wei-hua, LUO Shi-hui. Coupling stability of couplers between locomotive and vehicle[J]. Journal of Traffic and Transportation Engineering, 2016, 16(6): 48-54. (in Chinese). doi: 10.3969/j.issn.1671-1637.2016.06.006
    [2]
    ZHONG Wen-sheng, WANG Huang, ZHANG Jiang-tian, et al. Pressure stability of the arc-end heavy haul coupler with restoring bumpstop[J]. Journal of the China Railway Society, 2018, 40(4): 31-35. (in Chinese). doi: 10.3969/j.issn.1001-8360.2018.04.005
    [3]
    MA Wei-hua, LUO Shi-hui, SONG Rong-rong. Coupler dynamic performance analysis of heavy haul locomotives[J]. Vehicle System Dymanics, 2012, 50(9): 1435-1452. doi: 10.1080/00423114.2012.667134
    [4]
    XU Zi-qiang, MA Wei-hua, WU Qing, et al. Analysis of the rotation angle of a coupler used on heavy haul locomotives[J]. Journal of Rail and Rapid Transit, 2014, 228(8): 835-844. doi: 10.1177/0954409713496766
    [5]
    ZHANG Zhi-chao, LI Gu, CHU Gao-feng, et al. Dynamic characteristics of heavy haul locomotives and couplers passing through turnout branch line with electric brake[J]. China Railway Science, 2019, 40(4): 95-102. (in Chinese). doi: 10.3969/j.issn.1001-4632.2019.04.12
    [6]
    XU Qi-ying, MA Wei-hua, WANG Na-na. Study on coupler angling behavior when heavy haul locomotives negotiating curves[J]. China Railway Science, 2013, 34(2): 87-94. (in Chinese). doi: 10.3969/j.issn.1001-4632.2013.02.15
    [7]
    CHEN D. Derailment risk due to coupler Jack-Knifing under longitudinal buff force[J]. Journal of Rail and Rapid Transit, 2010, 224(5): 483-490. doi: 10.1243/09544097JRRT363
    [8]
    WEI Wei, HU Yang. Influence of train tail exhaust device on longitudinal force of trian[J]. Journal of Traffic and Transportation Engineering, 2012, 12(5): 43-49, 63. (in Chinese). doi: 10.3969/j.issn.1671-1637.2012.05.006
    [9]
    ZHENG Xue, XUE Qi-wen. Uncertainty study of train longitudinal coupler force[J]. Journal of Dalian Jiaotong University, 2017, 38(1): 38-44. (in Chinese). https://www.cnki.com.cn/Article/CJFDTOTAL-DLTD201701009.htm
    [10]
    GAO Guang-jun, CHEN Wei, ZHANG Jie, et al. Analysis of longitudinal forces of coupler devices in emergency braking process for heavy haul trains[J]. Journal of Central South University, 2017, 24(10): 2449-2457. doi: 10.1007/s11771-017-3656-9
    [11]
    SERAJIAN R, MOHAMMADI S, NASR A. Influence of train length on in-train longitudinal forces during brake application[J]. Vehicle System Dynamics, 2019, 57(2): 192-206. doi: 10.1080/00423114.2018.1456667
    [12]
    YANG Min, WANG Kai-yun, JI Tian-cheng. Effects of coupler slack on the longitudinal impulse of heavy haul train[J]. Journal of Transportation Engineering and Information, 2018, 16(2): 80-85. (in Chinese). doi: 10.3969/j.issn.1672-4747.2018.02.013
    [13]
    KOVALEV R, SAKALO A, YAZYKOV V, et al. Simulation of longitudinal dynamics of a freight train operating through a car dumper[J]. Vehicle System Dynamics, 2016, 54(6): 707-722. doi: 10.1080/00423114.2016.1153115
    [14]
    LI Xian-zhou. Train longitudinal dynamics model research and performance analysis of small slack coupler[D]. Dalian: Dalian Railway Institute, 2001. (in Chinese).
    [15]
    MOHAMMADI M, RAHMATFAM A, ZEHSAZ M, et al. Failure analysis study of railway draw-hook coupler[J]. Journal of Central South University, 2019, 26(4): 916-924. doi: 10.1007/s11771-019-4060-4
    [16]
    CHUNDURU S P, KIM M J, MIRMAN C. Failure analysis of railroad couplers of AAR type E[J]. Engineering Failure Analysis, 2010, 18(1): 374-385.
    [17]
    NOUGHABI S M M Z, DEHGHANI K, POURANVARI M. Failure analysis of automatic coupler SA-3 in railway carriages[J]. Engineering Failure Analysis, 2006, 14(5): 903-912.
    [18]
    XUE Hai. Study on fatigue reliability of heavy haul freight car couplings based on measured load spectrum[D]. Beijing: Beijing Jiaotong University, 2017. (in Chinese).
    [19]
    JIANG Yan, JIN Peng-di, CONG Sheng-guo. Experimental study on fatigue reliability of CQ-type coupler[J]. Locomotive and Rolling Stock Technology, 2016(S1): 9-11, 19. (in Chinese). https://www.cnki.com.cn/Article/CJFDTOTAL-JCCL2016S1004.htm
    [20]
    TIAN Wu-ling. Reliability analysis of heavy freight couplers based on small set of fatigue and fracture test samples[D]. Shanghai: Shanghai Jiaotong University, 2012. (in Chinese).
    [21]
    XUE Hai, LI Qiang, HU Wei-gang, et al. Compilation method for fatigue test load spectrum of coupler on heavy haul freight car[J]. China Railway Science, 2017, 38(2): 105-110. (in Chinese). https://www.cnki.com.cn/Article/CJFDTOTAL-ZGTK201702017.htm
    [22]
    XUE Hai, LI Qiang. Characteristics analysis of coupler force for 10 000 t heavy haul combined train[J]. China Railway Science, 2016, 37(3): 88-94. (in Chinese). https://www.cnki.com.cn/Article/CJFDTOTAL-ZGTK201603014.htm
    [23]
    YIN Min-xuan, ZHU Tao, XU Jing-tao, et al. Service reliability of a heavy-haul wagon coupler body based on the SMOTE-Bootstrap-Bayes method[J]. Engineering Failure Analysis, 2020, DOI: 10.1016/j.engfail-anal.2020.104836.
    [24]
    XUE Xiang-dong, ZHAO Hong-lun, ZHANG Zhen-miao. Prediction of fatigue life for freight train coupler[J]. Journal of the China Railway Society, 1995, 17(4): 45-49. (in Chinese). https://www.cnki.com.cn/Article/CJFDTOTAL-TDXB504.006.htm
    [25]
    GUAN Yan-hua, TIAN Wu-ling, ZHANG Jian-wu, et al. FEA coupler knuckle fatigue life of heavy-haul freight in Da-qin Railway[J]. Machine Design and Research, 2012, 28(3): 122-123. (in Chinese). https://www.cnki.com.cn/Article/CJFDTOTAL-JSYY201203043.htm
    [26]
    LI Zhi-hua. Reliability analysis of fatigue lifetime of coupler guard arm area of burden strain[D]. Beijing: Beijing Jiaotong University, 2008. (in Chinese).
    [27]
    XUE Hai, LI Qiang, SHI Xiao-ling. Analysis of stress intensity factor on heavy wagon's coupler knuckle[J]. Journal of Beijing Jiaotong University, 2016, 40(6): 97-101, 114. (in Chinese). https://www.cnki.com.cn/Article/CJFDTOTAL-BFJT201606016.htm
    [28]
    XUE Jun-qian, WEI Hong-liang, WANG Yue-dong, et al. Nonlinear finite element simulation analysis of freight car F-type coupler strength[J]. Journal of Dalian Jiaotong University, 2014, 35(1): 24-28. (in Chinese). https://www.cnki.com.cn/Article/CJFDTOTAL-DLTD201401006.htm
    [29]
    LUO Gang. Finite element analysis of No. 17 coupler based on assembly[J]. Equipment Manufacturing Technology, 2015(9): 25-28. (in Chinese). https://www.cnki.com.cn/Article/CJFDTOTAL-GXJX201509009.htm
    [30]
    CHEN Cheng. The forms of unbalanced loads and its influence to the coupler knuckle fatigue life[D]. Dalian: Dalian Jiaotong University, 2016. (in Chinese).
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