Static and Fatigue Analysis of the Front Draft Lugs of a Railroad Tank-Car Using FEM

  IJETT-book-cover  International Journal of Engineering Trends and Technology (IJETT)          
© 2014 by IJETT Journal
Volume-16 Number-1
Year of Publication : 2014
Authors : J. O. Trejo-Escandón , A. Leyva-Díaz , J. M. Sandoval-Pineda , P. A. Tamayo-Meza , L. A. Flores-Herrera


J. O. Trejo-Escandón , A. Leyva-Díaz , J. M. Sandoval-Pineda , P. A. Tamayo-Meza , L. A. Flores-Herrera. "Static and Fatigue Analysis of the Front Draft Lugs of a Railroad Tank-Car Using FEM", International Journal of Engineering Trends and Technology (IJETT), V16(1),43-48 Oct 2014. ISSN:2231-5381. published by seventh sense research group


In this work the main results of a static and fatigue analysis performed by means of a computational model of a Tank-Car are presented. The tensile load (draft) is the more continuous condition presented during typical service situations, and is directly applied over the front draft lugs when the train starts its movement. In this sense, a three-dimensional finite element analysis of the wagon is carried out in the ANSYS Workbench platform. The static loads are applied in orden to estimate the fatigue life of the lugs. The material properties and boundary conditions were applied directly in accordance with the guidelines set out by the American Association of Railroads (AAR). The results of this analysis can be a useful tool for designers of railway equipment and to improve the designs safety.


[1] Wabtec Corporation, Freight Car Draft Arrangements, Wabtec Corporation, USA, 2003.
[2] F. J. Heller, “Evolution of tank car design through engineering,” Proceedings of the 1970 Annual ASME Petroleum Conference, Denver, Colorado, 1970.
[3] C. P. L. Barkan, M. R. Saat, F. González, and T. T. Treichel, “How science and engineering are reducing risk of rail transport of hazardous materials,” Cooperative Research in Tank Car Safety Design in Railroads and Research sharing track, TR NEWS, no. 286, pp. 12-19, May-June 2013.
[4] M. R. Saat and C. P. L. Barkan, “Generalized railway tank safety design optimization for hazardous materials transport: Addressing the trade-off between transportation efficiency and safety,” Journal of Hazardous Materials, vol. 189, pp. 62-68, 2011.
[5] C. P. L. Barkan, T. T. Treichel, and G. W. Widell, “Reducing hazardous materials releases from railroad tank car safety events,” Transp. Res. Rec. 1707, pp. 27-34, 2000.
[6] C. A. Duarte, I. Babuška, and J. T. Oden, “Generalized finite element methods for three-dimensional structural mechanics problems,” Computers & Structures, vol. 77, pp. 215-232, 2000.
[7] G. Dhatt, G. Touzot, and E. Lefrançois, Finite Element Method. Numerical Methods Series, John Wiley & Sons, Inc., 1st edition, London, 2012.
[8] . R. Miele and R. C. Rice, Stress Analysis of Stub Sill Tank Cars, Final Report, to Volpe National Transportation Systems Center Research and Special Programs Administration U.S. Department of Transportation, Columbus, Ohio, December 1993.
[9] M. Domagala, and E. Lisowski, “Interaction of liquid motion on mobile tank structure,” Journal of KONES Powertrain and Transport, vol. 18, no. 3, pp. 67-71, 2011.
[10] S. Patel, V. Kumar, and R. Nareliya, “Fatigue analysis of rail joint using finite element method”, International Journal of Research in Engineering and Technology, Vol. 2, no. 1, pp.80-84,2013.
[11] Association of American Railroads (AAR), Section C-III ? Specifications for tank cars, in: Manual of Standards and Recommended Practices, Association of American Railroads, Washington, DC, 2007.
[12] C. F. Schulte, Dictionary of railway track terms, Simmons-Boardman Books, Inc., ed 3rd, 2003.
[13] C. R. Alavala, Finite Element Methods: basic concepts and applications, PHI Learning Private Limited, pp. 3-20, New Delhi, 2009.
[14] M. Carolan, B. Talamini, and D. Tyrell, “Update on ongoing tank car crashworthiness research predicted performance and fabrication approach,” Proceedings of 2008 IEEE/ASME Joint Rail Conference, Wilmington, Delaware, April 22-23, 2008.

Draft lugs, Fatigue Analysis, FEA, Static load, Tank-Car.