Transactions of the Korean Society of Mechanical Engineers A (대한기계학회논문집A)

The Korean Society of Mechanical Engineers (대한기계학회)
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Dynamic Analysis of a Three-dimensional Catenary System Using the Finite Element Method

유한요소해석을 이용한 3 차원 전차선로의 동특성 분석

  • 이규호 (한양대학교 대학원 기계공학과) ;
  • 조용현 (한국철도기술연구원) ;
  • 정진태 (한양대학교 기계정보경영공학과)
  • Published : 2009.11.01
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Abstract

Dynamic and static behaviors of a three-dimensional catenary system for a high-speed railway are analyzed by using the finite element method. Considering tensions in the contact wire and the messenger wire, we drive the equations of motion for the catenary system. These equations are for the longitudinal, transverse, vertical and torsional motions. After establishing the weak form, the weak forms are spatially discretized with newly defined two-node beam elements. With the discretized equations, a finite element computer program is developed for the static and dynamic analyses. The static deflections of the catenary system, which are important for good contact between the pantograph and the contact line, are computed when the gravity is applied. On the other hand, we analyze the natural frequencies and the corresponding natural modes of the catenary system. The dynamic responses of the system are also investigated when applying a load to the contact line. For verification of the developed finite element program, vibrations of the catenary system are measured and they are compared to computed time responses.

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References

  1. Kim, J. S. and Park, S. H., 2001, 'Dynamic Simulation of KTX Catenary System for Changing Design Parameters,' KSNVE, Vol. 11, No. 2, pp. 346-353
  2. Kim, W. M., Kim, J. T., Kim, J. S. and Lee, J. W., 2003, 'A Numerical Study on Dynamic Characteristics of a Catenary,' KSME International Journal, Vol. 17, pp. 860-869 https://doi.org/10.1007/BF02983400
  3. Park, S. H., Kim, J. S., Cho, Y. H. and Choi, K. Y., 2000, 'Vibrational Characteristics of KTX Catenary System for Changing Design Parameters,' Spring Conference of The Korean Society for Railway, Vol. 1, No. 1, pp. 265-272
  4. Kim, J. S. and Choi, B. D., 1999, 'A study on Dynamic Characteristics of a Catenary System,' KSNVE, Vol. 9, No. 2, pp. 317-323
  5. Cho, Y. H., 2008, 'Numerical Simulation of the Dynamic Responses of Railway Overhead Contact Lines to a Moving Pantograph, Considering a Nonlinear Dropper,' Journal of Sound and Vibration, Vol .315, pp. 433-454 https://doi.org/10.1016/j.jsv.2008.02.024
  6. Cho, Y. H., Kyung, J. H., Hur, S., Choe, K. Y. and Kim, K. H., 2000, 'A Study on the Interface between a G7 Pantograph and a KTX Catenary System in Preparation for G7 On-line Tests in the Korea High Speed Test Track,' Fall Conference of The Korean Society for Railway, pp. 557-570
  7. Chucheepsakul, S. and Saetiew, W., 2002, 'Free Vibrations of Inclined Arches Using Finite Elements,' STRUCTURAL ENGINEERING AND MECHANICS, Vol. 13, pp. 713-730 https://doi.org/10.12989/sem.2002.13.6.713
  8. Lacarbonara, W., Paolone, A. and Vestroni, F., 2007, 'Elastodynamics of Nonshallow Suspended Cables: Linear Modal Properties,' Journal of Vibration and Acoustics-Transactions of The ASME, Vol. 129, pp. 425-433 https://doi.org/10.1115/1.2748463
  9. Al-Qassab, M. and Nair, S., 2003, 'Wavelet-Galerkin Method for Free Vibrations of Elastic Cable,' Journal of Engineering Mechanics-ASCE, Vol. 129, pp. 350-357 https://doi.org/10.1061/(ASCE)0733-9399(2003)129:3(350)

Cited by

  1. Dynamic Analysis of Catenary System Subjected to Moving Load vol.35, pp.1, 2011, https://doi.org/10.3795/KSME-A.2011.35.1.099