Modal Analysis of Railroad Tank Car Using FEM

  IJETT-book-cover  International Journal of Engineering Trends and Technology (IJETT)          
© 2014 by IJETT Journal
Volume-16 Number-2
Year of Publication : 2014
Authors : A. Leyva-Díaz , J. O. Trejo-Escandón, L. A. Flores-Herrera, P. A. Tamayo-Meza, J. M. Sandoval-Pineda


A. Leyva-Díaz , J. O. Trejo-Escandón , L. A. Flores-Herrera , P. A. Tamayo-Meza , J. M. Sandoval-Pineda. "Modal Analysis of Railroad Tank Car Using FEM", International Journal of Engineering Trends and Technology (IJETT), V16(2),49-53 Oct 2014. ISSN:2231-5381. published by seventh sense research group


In this paper, a modal analysis is performed using The Finite Element Method (FEM) to a railroad tank car used to transport fuels and chemical products. Many of these substances are dangerous, so it is essential ensure the structural integrity of the units. The first 12 natural frequencies with their respective vibration modes of the structure were obtained. These results are used to determine safe conditions at different excitation frequencies and to avoid resonance problems during operation.


[1] J. Argyris, and S. Kelsey, Energy Theorems and Structural Analysis, Aircraft Engineering and Aerospace Technology, Vol. 26 (10), pp 347 – 356, 1954.
[2] M. Turner, W. Clough, H. Martin, and L. Topp, Stiffness and deflection analysis of complex structures, Journal of the Aeronautical Sciences, Vol. 23 (9), pp 805-823, 1956.
[3] M. Cerrolaza, El método de los elementos finitos para ingeniería y ciencias aplicadas: teoría y programas, 1a Ed, Editorial Universidad Central de Venezuela, 2005.
[4] J. He and Z. Fu, Modal Analysis, 1a Ed, Butterworth-Heinemann, 2001.
[5] B. Ustundag On the free Vibration Behavior of Cylindrical Shell Structures” M. Science thesis, Massachusetts Institute of Technology, Massachusetts, United States, Jun. 2011.
[6] Rao, S., Vibration of continuous systems, 1a Ed, Editorial Wiley, 2007.
[7] A. Leissa, Vibration of shell, 1a Ed, Editorial NASA Scientific and Technical Publications, 1973.
[8] V. Ramamurti and J. Pattabiraman, Free vibrations of circular cylindrical shells, Journal of sound and vibration, Vol. 48 (1), pp 137-155, 1976.
[9] B. Alzahabi and K. Natarajan, Correlation of modal characteristics of circular cylindrical shells, Conference & Exposition on Structural Dynamics IMAC-XXIII, United Estates, 2005.
[10] Wang, F., and Mechefske C. Modal analysis and testing of a thin-walled gradient coil cylinder model, Concepts in Magnetic Resonance, Vol. 27B (1), pp 34-50, 2005.
[11] H. Yu, J. Gordon, D. Jeong and Y. Tang, Analysis of impact energy to fracture unnotched charpy specimens made from railroad tank car steel, Proceedings of the 2007 ASME Rail Transportation Division Fall Technical Conference, United States, 2007.
[12] ANSYS, Inc. 14.5, Meshing User Guide, 2014.
[13] K. Modaressi-Tehrani, S. Rakheja and I. Stiharu, Three-dimensional analysis of transient slosh within a partly-filled tank equipped with baffles, Vehicle System Dynamics, Vol. 45 (6), pp 525-548, 2007.

FEM, Modal Analysis, Natural Frequency, Tank Car, Vibration Mode.