Browse > Article
http://dx.doi.org/10.5762/KAIS.2010.11.4.1178

A Study on Safety Estimation of Railroad Wheel  

Lee, Dong-Woo (Department of Mechanical Engineering, Dong-A University)
Kim, Jin-Nam (Department of Mechanical Engineering, Kangwon National University)
Cho, Seok-Swoo (Department of Vehicle Engineering, Kangwon National University)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.11, no.4, 2010 , pp. 1178-1185 More about this Journal
Abstract
Recently, high speed of container freight cars is causing fatigue damage of wheel. Sudden failure accidents cause a lot of physical and human damages. Therefore, damage analysis for wheel prevents failure accident of container freight car. Wheel receives mechanical and thermal loads at the same time while rolling stocks are run. The mechanical loads applied to wheel are classified by the horizontal load from contact of wheel and rail in curve line section and by the vertical force from rolling stocks weight. Also, braking and deceleration of rolling stocks cause repeated thermal load by wheel tread braking. Specially, braking of rolling stocks is frictional braking method that brake shoe is contacted in wheel tread by high breaking pressure. Frictional heat energy occurs on the contact surface between wheel tread and brake shoe. This braking converts kinetic energy of rolling stocks into heat energy by friction. This raises temperature rapidly and generates thermal loads in wheel and brake shoe. There mechanical and thermal loads generate crack and residual stress in wheel. Wetenkamp estimated temperature distribution of brake shoe experimentally. Donzella proposed fatigue life using thermal stress and residual stress. However, the load applied to wheel in aforementioned most researches considered thermal load and mechanical vertical load. Exact horizontal load is not considered as the load applied to wheel. Therefore, above-mentioned loading methods could not be applied to estimate actual stress applied to wheel. Therefore, this study proposed safety estimation on wheel of freight car using heat-structural coupled analysis on the basis of loading condition and stress intensity factor.
Keywords
Stress Intensity Factor; Wheel And Axle; Wheel Tread;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
연도 인용수 순위
1 Newman Jr, J.C. & Raju, I.S., Stress intensity factor equations for cracks in three-dimensional finite bodies, NASA Technical Memorandom 83200, p.1, 1981.
2 Tanaka, K., "Mechanics and Micro- mechanics of Fatigue Crack Propagation", ASTM STP 1020, American society for Testing and Materials, Philadelphia, pp.151-183, 1989.
3 Jae Ung Cho, "Statistical Fracture Analysis of Turbine Blade", J. of KAIS, Vol.7, No.2, pp.101-106, 2006.   과학기술학회마을
4 Byung Kab Koh and Sung Chul Lee, "An Experimental and Numerical Study on the Fracture Behavior of Air Conditioner Impellers", J. of KAIS, Vol. 10, No. 12, pp.3533-3539, 2009.   과학기술학회마을   DOI
5 Gordon J. and Perlman A., "Estimation of Residual Stresses in Railroad Commuter Car Wheels Following Manufacture", ASME IMECE RTD, 1998.
6 Jung Won Seo, Byeong Choon Goo, Jae Boong Choi and Young-Jin Kim, "A Study on the Contact Fatigue Life Evaluation for Railway Wheels Considering Residual Stress Variation", J. of KSME, Vol. 28, No. 9, pp.1391-1398, 2004.   과학기술학회마을   DOI
7 Wetenkamp, H. R., "The Influence of Brake shoes on the Temperatures of Wheels in Railway Service", J. of Engineering for Industry, pp.32-36, 1980.
8 Jung Won Seo, Byeung Choon Goo and Heung Chai Chung, "Evaluation of Residual Stress of Railway Wheel", Spring Conference of Korean Society for Railway, Vol. 3, No. 1, pp.668-673, 2003.
9 Donzella G. and Scepi. M., "The Effect of Block Braking on the Residual Stress State of a Solid Railway Wheel", IMechE, pp.145-158, 1998.
10 ROTECO, Report of Braking Pressure Testing, 2003.
11 AAR S-660-83, Procedure for the analytical evaluation of locomotive and freight car wheel designs. Manual of standards and recommended practices, Mechanical Division, American association of rail standards, USA, G57, 1983.
12 철도용품 공사규격서[합성제륜자] KRCS B244 01,2006.
13 Fermer M., "Optimization of railway freight car wheel by use of fractional factorial design method", Proceedings of the Institute of Mechanical engineers, Vol. 208, p.97, 1994.
14 Kyung Jin Choi, Chan Woo Lee and Si Woo Lee, "Effect on coefficient of brake and distribution of temperature on the braking of recycling", Spring Conference of Korean Society for Railway, Vol. 1, No. 6, p.209, 2006.
15 K. Idemura, "Brake Technology of Railway Vehicle", Research of Machine, Vol.49, pp.49-68, 1997.
16 Young Sam Ham and Taek Yul Oh, "Stress Distribution of Tilting Vehicles wheel-set by Interaction Force Between Wheel and Rail", Proceedings of the KSPE 2006 Spring Annual Meeting, pp.351-352, 2006.
17 Schiliern, Calculation of Wheel and Axle Set, Internal report of Integral Coach Factory, NO. SWS 504860 E, 1951.