Abstract




 
   

IJE TRANSACTIONS B: Applications Vol. 31, No. 5 (May 2018) 826-833    Article in Press

PDF URL: http://www.ije.ir/Vol31/No5/B/19-2806.pdf  
downloaded Downloaded: 29   viewed Viewed: 297

  A STUDY ON THE CONTACT ELLIPSE AND THE CONTACT PRESSURE DURING THE WHEEL WEAR THROUGH PASSING THE TRACKS INCLUDING SEVERAL SHARP CURVES
 
S. M. Salehi, G. H. Farrahi and S. Sohrabpour
 
( Received: December 19, 2017 – Accepted in Revised Form: February 19, 2018 )
 
 

Abstract    Wheel wear has been a concern in the railway for several decades. Studying the form change of the wheel/rail contacts in particular railways consisting of sharp curves helps to identify the risk of severe or catastrophic wear to minimize maintenance costs in order to be competitive in the transportation business. In this paper, the wheel/rail contact was studied on the particular railways. The experimental measurement of wheel profiles was used as an input to Hertz Contact Theory (HCT). It was found that: 1) for these railways the wheel flange is highly worn; 2) a 5th order polynomial function is appropriate to model the wear behavior of the critical wheel; 3) the minimum and maximum contact ellipse surface areas occur in Sd=22.29 mm and Sd=32 mm, respectively; 4) the maximum and minimum surface areas of the contact ellipse occur at points in which the contact pressure are minimum and maximum, respectively; and finally 5) the flange thickness region between 25 to 29 mm can be chosen as an appropriate range for the wheel maintenance purposes.

 

Keywords    Wheel Wear, Maintenance Technique, Sharp Curved Railways, Empirical Study, Wheel Flange Wear, Wheel Longevity Enhancement

 

چکیده    در دهه‌های گذشته،سایش چرخ به عنوان یکی از نگرانی‌ها در حمل‌ونقل ریلی بوده است. مطالعه تغییرشکل تماس‌های چرخ وریل در خطوط خاصیکه شاملپیچ‌های تند هستندبه شناسایی خطرات ناشی ازسایش شدیدیا فاجعه‌بار کمک می‌کند تا هزینه‌های تعمیرونگهداری به منظور رقابتی شدن در کسب و کار حمل‌ونقلبه حداقل برسد. در این مقاله، تماس چرخ و ریل در این مسیرهای خاص مورد مطالعه قرار گرفته است. اندازه‌گیری‌های تجربی پروفیل‌های چرخ به عنوان یک ورودی برایتئوری تماس هرتس (HCT) مورد استفاده قرار گرفته است. یافته‌ها حاکی از آن است که: 1) برای ایننوع خطوط راه‌آهن، سایش زیادی در فلنج چرخ رخ می‌دهد؛ 2) یک تابع چندجمله‌ایمرتبه 5 برای مدلسازی رفتار سایشی چرخ بحرانی مناسب است؛ 3) حداقل و حداکثر مساحت‌های سطح بیضی تماس به ترتیب در ضخامت‌های فلنج 29/22 و 32 میلیمتررخ می‌دهد؛ 4) حداکثر و حداقل مساحت‌های سطح بیضی تماس در نقاطی که در آن فشار تماس حداقل و حداکثر است رخ می دهد؛ و در نهایت 5) ناحیه ضخامت فلنج بین 25 تا 29 میلیمتر را می‌توان به عنوان محدوده مناسب برای اهداف تعمیرونگهداری چرخ انتخاب کرد.

References   

1.     Zakharov, S., Komarovsky, I. and Zharov, I., "Wheel flange/rail head wear simulation", Wear,  Vol. 215, No. 1-2, (1998), 18-24.

2.     Kaewunruen, S. and Marich, S., "Severity and growth evaluation of rail corrugations on sharp curves using wheel/rail interaction",  in Proceedings of the 20th national convention on civil engineering, (2015).

3.     DOURALI, M. and Jalili, M., "Investigation of wagon derailment moving on random rail irregularities using nonlinear 3-dimentional model (research note)",  International Journal of Engineering, Transactions B: Applications, Vol. 21, No. 4, (2008), 385-400

4.     Telliskivi, T. and Olofsson, U., "Wheel–rail wear simulation", Wear,  Vol. 257, No. 11, (2004), 1145-1153.

5.     Wang, W.-j., Jiang, W.-j., Wang, H.-y., Liu, Q.-y., Zhu, M.-h. and Jin, X.-s., "Experimental study on the wear and damage behavior of different wheel/rail materials", Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit,  Vol. 230, No. 1, (2016), 3-14.

6.     Ekberg, A., Kabo, E., Karttunen, K., Lindqvist, B., Lundén, R., Nordmark, T., Olovsson, J., Salomonsson, O. and Vernersson, T., "Identifying the root causes of damage on the wheels of heavy haul locomotives and its mitigation", Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit,  Vol. 228, No. 6, (2014), 663-672.

7.     Clayton, P., "Tribological aspects of wheel-rail contact: A review of recent experimental research", Wear,  Vol. 191, No. 1-2, (1996), 170-183.

8.     Lewis, R. and Olofsson, U., "Wheel-rail interface handbook, Elsevier,  (2009).

9.     Enblom, R., "Deterioration mechanisms in the wheel–rail interface with focus on wear prediction: A literature review", Vehicle System Dynamics,  Vol. 47, No. 6, (2009), 661-700.

10.   Sheinman, E., "Wear of rails. A review of the american press", Journal of Friction and Wear,  Vol. 33, No. 4, (2012), 308-314.

11.   Nielsen, J.C. and Johansson, A., "Out-of-round railway wheels-a literature survey", Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit,  Vol. 214, No. 2, (2000), 79-91.

12.   Zacher, M., Nicklisch, D., Grabner, G., Polach, O. and Eickhoff, B., "A multi-national survey of the contact geometry between wheels and rails", Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit,  Vol. 229, No. 6, (2015), 691-709.

13.   Jendel, T., "Prediction of wheel profile wear—comparisons with field measurements", Wear,  Vol. 253, No. 1-2, (2002), 89-99.

14.   Moreno-Ríos, M., Gallardo-Hernández, E.A., Vite-Torres, M. and Peña-Bautista, A., "Field and laboratory assessments of the friction coefficient at a railhead", Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit,  Vol. 230, No. 1, (2016), 313-320.

15.   Ansari, M., Hazrati, I., Esmailzadeh, E. and Azadi, S., "Wear rate estimation of train wheels using dynamic simulations and field measurements", Vehicle System Dynamics,  Vol. 46, No. 8, (2008), 739-759.

16.   Yan, W. and Fischer, F., "Applicability of the hertz contact theory to rail-wheel contact problems", Archive of Applied Mechanics,  Vol. 70, No. 4, (2000), 255-268.

17.   Zakharov, S. and Zharov, I., "Simulation of mutual wheel/rail wear", Wear,  Vol. 253, No. 1-2, (2002), 100-106.

18.   Chen, Y., "The effect of proximity of a rail end in elastic-plastic contact between a wheel and a rail", Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit,  Vol. 217, No. 3, (2003), 189-201.

19.   Farris, T., Keer, L. and Steele, R., "Life prediction for unstable shell growth in rails", Journal of Engineering for Industry,  Vol. 112, No. 2, (1990), 175-180.

20.   Müller, S. and Knothe, K., "Stability of wheelset-track dynamics for high frequencies", Archive of Applied Mechanics,  Vol. 67, No. 6, (1997), 353-363.

21.   Ekberg, A., Bjarnehed, H. and Lundbéan, R., "A fatigue life model for general rolling contact with application to wheel/rail damage", Fatigue & Fracture of Engineering Materials & Structures,  Vol. 18, No. 10, (1995), 1189-1199.

22.   Fisette, P. and Samin, J.-C., "A new wheel/rail contact model for independent wheels", Archive of Applied Mechanics,  Vol. 64, No. 3, (1994), 180-191.

23.   Enblom, R. and Berg, M., "Proposed procedure and trial simulation of rail profile evolution due to uniform wear", Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit,  Vol. 222, No. 1, (2008), 15-25.

24.   Aceituno, J.F., Wang, P., Wang, L. and Shabana, A.A., "Influence of rail flexibility in a wheel/rail wear prediction model", Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit,  Vol. 231, No. 1, (2017), 57-74.

25.   Huang, L., Li, Z., Li, L. and An, Q., "Methods to calculate accurate wheel/rail contact positions and static contact stress levels", Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit,  Vol. 230, No. 1, (2016), 138-150.

26.   Code, U., "510-2. Trailing stock: Wheels and wheelsets", Conditions concerning the use of wheels of various diameters. 4th ed. Paris: International Union of Railways,  Vol., No., (2004).

27.   Yamashita, S. and Sugiyama, H., "Numerical procedure for dynamic simulation of two-point wheel/rail contact and flange climb derailment of railroad vehicles", Journal of Computational and Nonlinear Dynamics,  Vol. 7, No. 4, (2012), 041012.

28.   Sebesan, I., Tudorache, C., Dumitriu, M. And Spiroiu, M., "The study of the wheel diameter influence over the loading capacity of a railway vehicle", Mechanics,  Vol. 840, No., (2009), 760.


Download PDF 



International Journal of Engineering
E-mail: office@ije.ir
Web Site: http://www.ije.ir