Effect of train speed and track geometry on the ride comfort in high-speed railways based on ISO 2631-1

Abstract

The operational speeds of passenger trains have been increasing and now often exceed 300 km/h. Higher speeds can lead to increased vibration and reduced ride comfort for railway passengers. This study investigates the combined effect of speed and track geometry on vibration discomfort in high-speed trains. Railway vehicle dynamic models with various levels of complexity are used, with the measured geometry of a section of a high-speed track as an input. The models have been calibrated with vibration measurements carried out in a train running over this section of the track and then applied to predict the vibration discomfort at increased speeds. To evaluate the vibration discomfort at speeds up to 400 km/h, information on track geometry should include wavelengths up to at least 150 m. Vertical irregularities have the greatest effect at all speeds but lateral irregularities are also important. Both the vertical and lateral irregularities of a high-speed track should be controlled at wavelengths of 50–100 m that excite rigid modes of the car body, corresponding to frequencies of typically 1–2 Hz. Additionally, vertical irregularities with wavelengths of 5–12 m that excite the fundamental flexible mode of the car body, typically around 10–15 Hz, should also be controlled. The effects of cant, the rates of change of cant, and the radius of vertical curves are also evaluated although they only have a small effect on vibration discomfort.

Keywords

Whole-body vibration ride comfort high-speed railways track geometry vehicle dynamics

Get full access to this article

View all access options for this article.

References

Smith

Zhou

. Background of recent developments of passenger railways in China, the UK and other European countries. J Zhejiang Univ-Sci A 2014; 15: 925–935.

BS 6841:1987. Measurement and evaluation of human exposure to whole-body mechanical vibration and repeated shock. 1987.

ISO 2631-1:1997. Mechanical vibration and shock – Evaluation of human exposure to whole-body vibration – part 1: general requirements. 1997.

UIC Code 703:1989. Layout characteristics for lines used by fast passenger trains. 1989.

BS EN 13848-5: 2017. Railway applications – Track – Track geometry quality – part 5: geometric quality levels. 2017.

Tian

Gao

Zhai

. Comparative analysis of track irregularity management standards for high-speed railways. J China Railw Soc 2015; 3: 64–71.

The Ministry of Railway of PRC. Ballast track repair rules of high-speed railway (temp). Beijing: China Railway Publishing House, 2013.

The Ministry of Railway of PRC. Ballastless track repair rules of high-speed railway (temp). Beijing: China Railway Publishing House, 2013.

EN 12299:2009. Railway applications – ride comfort for passengers – measurement and evaluation. 2009.

10.

ISO 10056:2001. Mechanical vibration – measurement and analysis of whole-body vibration to which passengers and crew are exposed in railway vehicles. 2001.

11.

ISO 2631-4:2001. Mechanical vibration and shock – evaluation of human exposure to whole-body vibration – part 4: guidelines for the evaluation of the effects of vibration and rotational motion on passenger and crew comfort in fixed–guideway transport systems. 2001.

12.

UIC Code 513:1994. Guidelines for evaluating passenger comfort in relation to vibration in railway vehicles. 1994.

13.

Sun

Zhou

Thompson

, et al. Vertical random vibration analysis of vehicle–track coupled system using Green's function method. Veh Syst Dyn 2014; 52: 362–389.

14.

Tomioka

Takigami

Suzuki

. Numerical analysis of three-dimensional flexural vibration of railway vehicle car body. Veh Syst Dyn 2006; 44: 272–285.

15.

Kargarnovin

Younesian

Thompson

, et al. Ride comfort of high-speed trains travelling over railway bridges. Veh Syst Dyn 2005; 43: 173–199.

16.

Cheng

Lee

Chen

. Modeling and nonlinear hunting stability analysis of high-speed railway vehicle moving on curved tracks. J Sound Vib 2009; 324: 139–160.

17.

Zhou

Goodall

Ren

, et al. Influences of car body vertical flexibility on ride quality of passenger railway vehicles. Proc IMechE, Part F: J Rail and Rapid Transit 2009; 223: 461–471.

18.

Kumar

Rastogi

Pathak

. Simulation for whole-body vibration to assess ride comfort of a low–medium speed railway vehicle. Simulation 2017; 93: 225–236.

19.

Huang

Zeng

Luo

, et al. Numerical and experimental studies on the car body flexible vibration reduction due to the effect of car body-mounted equipment. Proc IMechE, Part F: J Rail and Rapid Transit 2018; 232: 103–120.

20.

Iwnicki

. Manchester benchmarks for rail vehicle simulation. Veh Syst Dyn 1999, pp. 31.

21.

Iwnicki

. Handbook of railway vehicle dynamics, Boca Raton, FL: CRC Press, 2006.

22.

Zheng

Hao

Wang

, et al. A full-spectrum analysis of high-speed train interior noise under multi-physical-field coupling excitations. Mech Syst Signal Process 2016; 75: 525–543.

23.

Diana

Cheli

Collina

, et al. The development of a numerical model for railway vehicles comfort assessment through comparison with experimental measurements. Veh Syst Dyn 2002; 38: 165–183.

24.

Howarth HVC and Griffin MJ. A comparison of standardised methods of evaluating rail vehicle vibration with respect to passenger discomfort. In: The 39th United Kingdom conference on human response to vibration, Ludlow, Shropshire, UK, 15–17 September 2004.

25.

Universal Mechanism Software, Simulation of rail vehicle dynamics, User's Manual, 2016.

26.

Thompson

Vincent

. Track dynamic behaviour at high frequencies. Part 1: theoretical models and laboratory measurements. Veh Syst Dyn 1995; 24: 86–99.

27.

Graa

Nejlaoui

Houidi

, et al. Development of a reduced dynamic model for comfort evaluation of rail vehicle systems. Proc IMechE, Part K: J Multi-Body Dynamics 2016; 230: 489–504.

28.

Thompson DJ. Railway noise and vibration: mechanisms, modelling and means of control. Oxford: Elsevier Science, 2008.

29.

Wickens AH. Fundamentals of rail vehicle dynamics – guidance and stability. Lisse: Swets & Zeitlinger Publishers, 2003.

30.

Huang Z. Theoretical modelling of railway curve squeal. PhD Thesis, University of Southampton, UK, 2007.

31.

Kalker

. A fast algorithm for the simplified theory of rolling contact. Veh Syst Dyn 1982; 11: 1–13.

32.

Iwnicki

. Manchester benchmarks for rail vehicle simulation. Veh Syst Dyn 1998; 30: 295–313.

33.

Shin K and Hammond J. Fundamentals of signal processing for sound and vibration engineers. Hoboken, NJ: Wiley-Blackwell, 2008.

34.

Griffin

. Handbook of human vibration, London: Elsevier Academic Press, 1990.

35.

Sari

Griffin

. Postural stability when walking: effect of the frequency and magnitude of lateral oscillatory motion. Appl Ergonom 2014; 45: 293–299.

36.

Donohew

Griffin

. Low frequency motions and motion sickness on a tilting train. Proc IMechE, Part F: J Rail and Rapid Transit 2007; 221: 125–133.

37.

Choi

Lee

, et al. The influence of track irregularities on the running behavior of high-speed trains. Proc IMechE, Part F: J Rail and Rapid Transit 2013; 227: 94–102.

Supplementary Material

Please find the following supplemental material available below.

For Open Access articles published under a Creative Commons License, all supplemental material carries the same license as the article it is associated with.

For non-Open Access articles published, all supplemental material carries a non-exclusive license, and permission requests for re-use of supplemental material or any part of supplemental material shall be sent directly to the copyright owner as specified in the copyright notice associated with the article.

0.00 MB

0.02 MB