Numerical study of the in uence of suspended equipment on ride comfort in high-speed railway vehicles

Document Type : Article

Author

Department of Railway Vehicles, University Politehnica of Bucharest, Romania.

Abstract

To study how the suspended equipments impact the carbody flexible vibrations in railway vehicle and the ride comfort, a rigid flexible general model is required. The numerical simulations rely on three models, derived from the general model - a reference model with no equipment, a simplified model with one equipment mounted at the carbody centre and another model considering four equipments mounted along the carbody. The intent of this paper arises from the observation that the literature review does not feature any study to highlight the change in the ride comfort, exclusively due to the equipments. Similarly, there is no mention on contrasting the ride comfort results obtained from the simplified model versus the ones coming from the model with more equipments. The main characteristics of the flexible vibrations behaviour in the carbody due to the suspended equipments are made visible by comparing the frequency response functions of the carbody between the no equipment and the one equipment models. The influence of the suspended equipments on the ride comfort is established by a contrastive examination of the ride comfort index calculated in the carbody fitted with one/four equipment/s models with the ride comfort index from the no equipment model.

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References

References:
1. Tomioka, T., Takigami, T., and Suzuki, Y. "Numerical analysis of three-dimensional  flexural vibration of railway vehicle car body", Veh. Syst. Dyn., 44, pp. 272-285 (2006).
2. Huang, C., Zeng, J., Luo, G., and Shi, H. "Numerical and experimental studies on the car body  flexible vibration reduction due to the effect of car bodymounted equipment", Proc IMechE Part F: J Rail and Rapid Transit, 232(1), pp. 103-120 (2018).
3. Sun, W., Zhou, J., Gong, D., and You, T. "Analysis of modal frequency optimization of railway vehicle car body", Advances in Mechanical Engineering, 8(4), pp. 1-12 (2016).
4. Yang, G., Wang, C., Xiang, F., and Xiao, S. "Effect of train carbody's parameters on vertical bending stiffness performance", Chinese Journal of Mechanical Engineering, 29(6), pp. 1120-1126 (2016).
5. Diana, G., Cheli, F., Collina, A., et al. "The development of a numerical model for railway vehicles comfort assessment through comparison with experimental measurements", Veh. Syst. Dyn., 38(3), pp. 165-183 (2002).
6. Ye, H., Zeng, J., Wang, Q., and Han, X. "Study on carbody  flexible vibration considering layout of underneath equipment and doors", 4th International Conference on Sensors, Measurement and Intelligent Materials (ICSMIM 2015), Shenzhen, China, pp. 1177-1183 (2015).
7. Shi, H.L., Luo, R., Wu, P.B., et al. "Application of DVA theory in vibration reduction of carbody with suspended equipment for high-speed EMU", Science China Technological Sciences, 57(7), pp. 1425-1438 (2014).
8. Luo, G., Zeng, J., and Wang, Q. "Identifying the relationship between suspension parameters of underframe equipment and carbody modal frequency", Journal Modern Transport, 22(4), pp. 206-213 (2014).
9. Dumitriu, M. "Influence of suspended equipment on the carbody vertical vibration behaviour of high-speed railway vehicles", Archive of Mechanical Engineering, 63(1), pp. 25-44 (2016).
10. Wu, H.C., Wu, P.B., Zeng, J., et al. "Influence of equipment under car on carbody vibration", J. Traffic Trans. Eng., 12(5), pp. 50-56 (2012).
11. Shi, H.L., Wu, P.B., and Luo, R. "Coupled vibration characteristics of  flexible car body and equipment of EMU", J Southwest Jiaotong Univ, 49(4), pp. 693-699 (2014).
12. Sun, Y., Gong, D., and Zhou, J. "Study on vibration reduction design of suspended equipment of high speed railway vehicles", Journal of Physics: Conference Series, 744, Paper no. 012212 (2016).
13. Aida, K.Y., Tomioka, T., Takigami, T., et al. "Reduction of carbody  flexural vibration by the high-damping elastic support of under-floor equipment", Quarterly Report of RTRI, 56(4), pp. 262-267 (2015).
14. Shi, H., Luo, R., Wu, P., et al. "Influence of equipment excitation on flexible carbody vibration of EMU", Journal Modern Transport, 22(4), pp. 195-205 (2014).
15. Shi, H.L., Luo, R., Wu, P.B., and Zeng, J. "Suspension parameters designing of equipment for electric multiple units based on dynamic vibration absorber theory", J Mech Eng, 50(14), pp. 155-161 (2014).
16. Sun, W., Gong, D., Zhou, J., and Zhao, Y. "Influences of suspended equipment under car body on highspeed train ride quality", Procedia Engineering, 16, pp. 812 -817 (2011).
17. Nie, Y.Z., Zeng, J., and Li. F.G. "Research on resonance vibration simulation method of high-speed railway vehicle carbody", International Industrial Informatics and Computer Engineering Conference (IIICEC 2015), Xi'an, Shaanxi, China, pp. 1117-1121 (2015).
18. Shi, H. and Wu, P. "Flexible vibration analysis for car body of high-speed EMU", J. Mech. Sci. Technol., 30(1), pp. 55-66 (2016).
19. C 116, "Interaction between vehicles and track. RP 1, Power spectral density of track irregularities, Part 1: Definitions, conventions and available data", Utrecht (1971).
20. ENV 12299 "Railway applications ride comfort for passengers measurement and evaluation" (1997).
21. UIC 513 R Guidelines for Evaluating Passenger Comfort in Relation to Vibration in Railway Vehicle, International Union of Railways (1994).
22. Zhou, J., Goodall, R., Ren, L., and Zhang, H. "Influences of car body vertical  flexibility on ride quality of passenger railway vehicles", Proc IMechE Part F: J Rail and Rapid Transit, 223, pp. 461-471 (2009).
23. Zhou, J. and Wenjing, S. "Analysis on geometric filtering phenomenon and  flexible car body resonant vibration of railway vehicles", Journal of Tongji University, 37(12), pp. 1653-1657 (2009).
24. Gong, D., Zhou, J., and Sun, W.J. "On the resonant vibration of a flexible railway car body and its suppression with a dynamic vibration absorber", Journal of Vibration and Control, 19(5), pp. 649-657 (2013).
25. Gong, D., Jia, Y., Song, G., and Zhou, J. "Study on geometry filtering phenomenon and  flexible car body resonant vibration of articulated trains", Advanced Materials Research, 787, pp. 542-547 (2013).
26. Dumitriu, M. "Analysis of the dynamic response in the railway vehicles to the track vertical irregularities. Part I: The theoretical model and the vehicle response functions", Journal of Engineering Science and Technology Review, 8(4), pp. 24-31 (2015).
27. Dumitriu, M. "Analysis of the dynamic response in the railway vehicles to the track vertical irregularities. Part II: The numerical analysis", Journal of Engineering Science and Technology Review, 8(4), pp. 32-39 (2015).
Scientia Iranica
Volume 27, Issue 4
Transactions on Mechanical Engineering (B)
July and August 2020
Pages 1897-1915

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