Dynamic evaluation on ride comfort of metro vehicle considering structural flexibility

• Autorzy: Chen Zhaowei , Zhu Guo

Identyfikatory

DOI

10.1007/s43452-021-00310-7

• Języki publikacji: EN

Abstrakty

EN

Traditional rigid vehicle model cannot reflect structural local vibration and flexible deformation, which may affect the accuracy in evaluating ride comfort of metro vehicle. Aiming at this issue, this paper proposes a research method of flexible dynamic behavior based on flexible multi-body dynamics (FMBD), considering the structural flexibilities of key parts of metro vehicle in detail, to study the ride comfort of metro vehicle. First, finite element models of carbody and frame are established, which are then reduced by substructure theory and Guyan reduction method. On this basis, the flexible vehicle-track coupled dynamic model is established. After investigating the difference between the flexible model and traditional rigid model, the ride comfort of metro vehicle on straight line and curve line is then evaluated subjected to rail random irregularity, short-wave excitation and long-wave excitation, respectively. Finally, correlations of carbody vibrations at different locations are deeply investigated. Results show that carbody accelerations calculated by flexible model are larger than those obtained by rigid model. The sensitive frequency band of human is obviously reflected and calculated by flexible model, indicating that the ride comfort of metro vehicle can be more accurately evaluated with the flexible vehicle model. Flexible modes and local vibrations are obviously reflected in carbody vibrations. Vibration at PR (point on roof) location is largest, and vibration at PC (point on floor center) location is smallest. Ride comfort is very sensitive to long-wave excitation while is not sensitive to short-wave excitation. It is not accurate enough to evaluate ride comfort of metro vehicle only according to vibration at floor center, and more data at different locations should be concerned, especially vibrations at air spring locations.

Słowa kluczowe

EN

metro vehicle; ride comfort; flexible multibody dynamics; vehicle-track dynamics; short-wave excitation; long-wave excitation; cross-correlation

PL

metro; tor; wagon metra

• Wydawca: Springer ; Wrocław University of Science and Technology
• Czasopismo: Archives of Civil and Mechanical Engineering
• Rocznik: 2021
• Tom: Vol. 21, no. 4
• Strony: 463--478
• Opis fizyczny: Bibliogr. 23 poz., rys., wykr.

Twórcy

autor

Chen Zhaowei

• School of Mechanotronics and Vehicle Engineering, Chongqing Jiaotong University, No.66 Xuefu Rd., Nan’an Dist., Chongqing, China

autor

Zhu Guo

• School of Mechanotronics and Vehicle Engineering, Chongqing Jiaotong University, No.66 Xuefu Rd., Nan’an Dist., Chongqing, China

Bibliografia

• [1] Iwnicki SD. Handbook of railway vehicle dynamics. CRC/Taylor & Francis, 2006.
• [2] Zhai WM. Vehicle-track coupled dynamics. Beijing: Science press; 2015.
• [3] Pradhan S, Samantaray AK. Integrated modeling and simulation of vehicle and human multi-body dynamics for comfort assessment in railway vehicles. J Mech Sci Technol. 2018;32(1):109–19.
• [4] Timoshenko SP, Langer BF. Stresses in railroad track. ASME Trans. 1932;54:2772–93.
• [5] Escalona JL, Sugiyama H, Shabana AA. Modelling of structural flexiblity in multibody railroad vehicle systems. Veh Syst Dyn. 2013;51(7):1027–58.
• [6] Shabana AA. Dynamics of multibody systems. 3rd ed. Cambridge: Cambridge University Press; 2005.
• [7] Sun S, Wang W, Liu J, Li H. Study of carbody’s severe vibration based on stability analysis of vehicle system. China Railway Sci. 2012;33(2):82–8.
• [8] Gerardin M, Cardona A. Flexible multibody dynamics: a finite element approach. Chichester: John Wiley & Sons Publishing House; 2001.
• [9] Huang CH, Zeng J, Liang SL. Carbody hunting investigation of a high speed passenger car. J Mech Sci Technol. 2013;27(8):2283–92.
• [10] Shi H, Wu P. Flexible vibration analysis for car body of high-speed EMU. J Mech Sci Technol. 2016;30(1):55–66.
• [11] Gong D, Zhou J, Sun W. On the resonant vibration of a flexible railway car body and its suppression with a dynamic vibration absorber. J Vib Control. 2012;19(5):649–57.
• [12] Claus H, Schiehlen W. Modeling and simulation of railway boogie structural vibrations. Veh Syst Dyn. 1998;29:538–52.
• [13] Claus H, Schiehlen W. Symbolic-numeric analysis of flexible multibody systems. Mech Struct Mach. 2002;30(1):1–30.
• [14] Carlbom PF. Combining MBS with FEM for rail vehicle dynamics analysis. Multibody Syst Dyn. 2001;6(3):291–300.
• [15] Saporito G, Baroni A, Romani M. Multi-purpose flexible bodies integration into the multi-body system of a metro-vehicle, ASME 2010 10th Biennial Conference on Engineering Systems Design and Analysis. 2010.
• [16] Bampton MCC, Craig JRR. Coupling of substructures for dynamic analyses. AIAA J. 1968;6(7):1313–9.
• [17] Fehr J, Eberhard P. Error-controlled model reduction in flexible multibody dynamics. J Comput Nonlinear Dyn. 2010;5(3):470–8.
• [18] Yoo WS, Haug EJ. Dynamics of flexible mechanical systems using vibration and static correction modes. J Mech Des. 1986;108(3):315.
• [19] Wu P, Xue S, Yang C. Dynamics response of high speed passenger car based on flexible car body model. J Traffic Transp Eng. 2005;5:5–8.
• [20] Zhai WM, Cai CB. Train/track/bridge dynamic interactions: Simulation and applications. Veh Syst Dyn. 2002;37(S):653–65.
• [21] Zhai W, Xia H, Cai C, et al. High-speed train–track–bridge dynamic interactions–part I: theoretical model and numerical simulation. Int J Rail Transp. 2013;1(1–2):3–24.
• [22] Ni C, Wang Y. A brief discussion for ride index and comfort. Railway Locomotive & Car. 2003;23(06):1–3.
• [23] Huang C, Zeng J, Luo R. Vibration suppression of lightweight high speed carbody structure, Proceedings of International Symposium on Dynamics of Vehicles on Roads and Tracks, Manchester, 2011.

Uwagi

PL

Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2022-2023)