Forced vibration modeling of rail considering shear deformation and moving magnetic load

Jun Soo Kim, Seong Jong Kim, Hyuk Lee, SungKyu Ha, Young Hyun Lee

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

A forced vibration model of a rail system was established using the Timoshenko beam theory to determine the dynamic response of a rail under time-varying load considering the damping effect and stiffness of the elastic foundation. By using a Fourier series and a numerical method, the critical velocity and dynamic response of the rail were obtained. The forced vibration model was verified by using FEM and Euler beam theory. The permanent deformation of the rail was predicted based on the forced vibration model. The permanent deformation and wear were observed through the experiment. Parametric studies were then conducted to investigate the effect of five design factors, i.e., rail cross-section shape, rail material density, rail material stiffness, containment stiffness, and damping coefficient between rail and containment, on four performance indices of the rail, i.e., critical velocity, maximum deflection, maximum longitudinal stress, and maximum shear stress.

Original languageEnglish
Pages (from-to)1547-1557
Number of pages11
JournalTransactions of the Korean Society of Mechanical Engineers, A
Volume37
Issue number12
DOIs
StatePublished - 2013 Jan 1

Fingerprint

Shear deformation
Rails
Stiffness
Dynamic response
Damping
Fourier series
Shear stress
Loads (forces)
Numerical methods
Wear of materials
Finite element method

Keywords

  • Beam on elastic foundation
  • Critical velocity
  • Dynamic response
  • Euler beam theory
  • Timoshenko beam theory

Cite this

Kim, Jun Soo ; Kim, Seong Jong ; Lee, Hyuk ; Ha, SungKyu ; Lee, Young Hyun. / Forced vibration modeling of rail considering shear deformation and moving magnetic load. In: Transactions of the Korean Society of Mechanical Engineers, A. 2013 ; Vol. 37, No. 12. pp. 1547-1557.
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Forced vibration modeling of rail considering shear deformation and moving magnetic load. / Kim, Jun Soo; Kim, Seong Jong; Lee, Hyuk; Ha, SungKyu; Lee, Young Hyun.

In: Transactions of the Korean Society of Mechanical Engineers, A, Vol. 37, No. 12, 01.01.2013, p. 1547-1557.

Research output: Contribution to journalArticle

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AB - A forced vibration model of a rail system was established using the Timoshenko beam theory to determine the dynamic response of a rail under time-varying load considering the damping effect and stiffness of the elastic foundation. By using a Fourier series and a numerical method, the critical velocity and dynamic response of the rail were obtained. The forced vibration model was verified by using FEM and Euler beam theory. The permanent deformation of the rail was predicted based on the forced vibration model. The permanent deformation and wear were observed through the experiment. Parametric studies were then conducted to investigate the effect of five design factors, i.e., rail cross-section shape, rail material density, rail material stiffness, containment stiffness, and damping coefficient between rail and containment, on four performance indices of the rail, i.e., critical velocity, maximum deflection, maximum longitudinal stress, and maximum shear stress.

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