Analysis of the rail roughness influence on vehicle dynamic behavior by means of multibody simulation

Piotr Kurowski; Adam Martowicz; Tadeusz Uhl; Grzegorz Lasko

doi:10.2478/v10174-011-0002-0

Authors

Piotr Kurowski AGH University of Science and Technology, Al. Mickiewicza 30, 30-059 Krakow, Poland Author
Adam Martowicz AGH University of Science and Technology, Al. Mickiewicza 30, 30-059 Krakow, Poland Author
Tadeusz Uhl AGH University of Science and Technology, Al. Mickiewicza 30, 30-059 Krakow, Poland Author
Grzegorz Lasko AGH University of Science and Technology, Al. Mickiewicza 30, 30-059 Krakow, Poland Author

DOI:

https://doi.org/10.2478/v10174-011-0002-0

Keywords:

rail vehicle, rail roughness, multibody analysis, vibrations, measurements

Abstract

The paper presents the results of multibody simulations performed for the model of rail vehicle in order to study the influence of introduced rail roughness on dynamic characteristics of vehicle. Dynamic behavior has been assessed with the accelerations of vibrations measured for chosen points in the model of tive-piece tram. Moreover there have been shown calculated normal modes and related natural frequencies of the multibody model. The influence of rail roughness has been analyzed with the tram runs performed for given speeds. Yielded results have enabled to conclude about sources and propagation of vibrations considering kinematic excitation resulting from geometric imperfections of rail.

References

Beretta S., Braghin F., Bucca G., Desimone H.: Structural integrity analysis of a tram-way: load spectra and material damage, Wear, 258, 1255-1264, 2005.

Box G.E.P., Draper N.R.: Empirical Model Building and Response Surfaces, John Wiley & Sons, Inc., New York, 1986.

Chudzikiewicz A.: Elementy diagnostyki pojazdów szynowych, Politechnika Warszawska, Instytut Technologii i Eksploatacji w Radomiu, 2002.

Chudzikiewicz A., Uhl T.: Rozwój metod modelowania i badania dynamiki pojazdów szynowych w środowisku MATLABa/Simulinka, V Szkoła Analizy Modalnej, Kraków, 12-14 grudnia 2000.

Dias J.P., Correa R.M.: Multiobjective optimization of multibody systems with genetic algorithms, The III European Conference on Computational Mechanics, Lisbon, Portugal, June 5-8, 2006.

Gallina A., Martowicz A., Uhl T.: An application of response surface methodology in the field of dynamic analysis of mechanical structures considering uncertain parameters, The ISMA2006 Conference on Noise and Vibration Engineering, Leuven, Belgium, September 18-20, 2006.

Gallina A., Martowicz A., Uhl T.: Robustness analysis of a car windscreen using Response Surface techniques, The 1st International Conference on Uncertainty in Structural Dynamics, Sheffield, UK, June 11-13, 2007.

Martowicz A., Kurowski P., Uhl T., Lasko G.: Robust design optimisation of the FE model of rail vehicle, The WCSMO-8: 8th World Congress on Structural and Multidisciplinary Optimization, Lisbon, Portugal, June 1-5, 2009.

Martowicz A., Vige' D., Gallina A., Uhl T.: Coupling Monte Carlo Simulation with Response Surface Methodology for evaluating dynamic properties of FE model of real-life vehicle's structure, The Symposium: NATO/AVT-147, Computational Uncertainty in Military Vehicle Design, Athens, Greece, December 3-6, 2007.

Myers R.H., Montgomery D.C.: Response Surface Methodology process and product optimization using designed experiments, John Wiley & Sons, Inc., New York, 1995.

Uhl T., Chudzikiewicz A.: Analytical and experimental investigation of low floor tram dynamics, International Journal on Vehicle System Dynamics, 25, 702-713, 2002.

Report ERRI B12/Rp17, Programme of tests to be carried out on wagons with steel underframe and body structure and on their cast steel frame bogies, issue 8, Utrecht, Netherlands, April 1997.

Standard ORE B176 RP1, vol. 1: Preliminary studies and specifications, vol. 2: Specification for a bogie with improved curving characteristics, vol. 3: Specifications for a bogie with improved curving characteristics for body tilt, Utrecht, Netherlands, 1989.

Standard UIC 513, Guidelines to evaluating passenger comfort in relation to vibration in railway vehicles, International Union of Railways, 1st edition, 1994.

Standard UIC 518, Testing and Approval of Railway Vehicles from the Point of View of Their Dynamic Behaviour - Safety - Track Fatigue - Ride Quality, issue 2, 1 October 1999