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고무부싱의 강성에 따른 복합소재 대차의 동적거동 평가

Investigation of Vehicle Dynamic Behavior of Composite Bogie Under Different Rubber Bushing Stiffness Values

  • Kim, Il Kyeom (Railway System Engineering, University of Science & Technology) ;
  • Kim, Jung Seok (New Transportation Systems Research Center, Korea Railroad Research Institute) ;
  • Lee, Woo Geun (Railway System Engineering, University of Science & Technology)
  • 투고 : 2014.07.22
  • 심사 : 2015.01.05
  • 발행 : 2015.03.01

초록

본 연구에서는 무현가 복합소재 대차프레임의 철도차량 적용 가능성을 검토하기 위해 동특성 해석과 시험을 수행하였다. 복합소재 대차에서 윤축의 가이드 역할을 하는 고무부싱의 강성을 10MN/m에서 100MN/m까지 10MN/m 단위로 변화시키면서 차량 동특성을 해석적으로 평가하였다. 평가 결과 고무부싱의 강성이 40MN/m 이상에서는 성능요구조건을 만족하고 있음을 알 수 있었다. 또한, 81MN/m의 강성을 갖는 고무부싱을 제작하여 대차에 설치하고 주행 동특성 시험을 수행하였다. 시험결과 임계속도는 약 363km/h로 나타났으며, 주행 해석에서 얻은 330km/h와 약 10%의 오차를 보였다.

In this study, a vehicle dynamic analysis and roller rig test were performed to evaluate the applicability of a suspensionless composite bogie to railway vehicles. A vehicle dynamic analysis was carried out under different rubber bushing stiffness values. The stiffness of the rubber bushing that plays a role in guiding wheel sets was varied in the range of 10-100 MN/m, in 10-MN/m steps. Based on the results, the composite bogie with a rubber bushing stiffness of more than 40 MN/m satisfied the design requirements. In addition, a rubber bushing with a stiffness of 81 MN/m was fabricated, and a roller rig test was performed. Based on the test results, the vehicle equipped with the composite bogie had a critical speed of 363 km/h, which agreed with the simulation result within an error of 10%.

키워드

참고문헌

  1. Kim, J. S. and Yoon, H J., 2011, "Structural Behaviors of a GFRP Composite Bogie Frame for Urban Subway Trains Under Critical Load Conditions," ICM11, Italy, June 5-9.
  2. Kim, J. S., Yoon, H J., Lee, S. H., Lee, W. G. and Shin, K. B., 2011, "Durability Evaluation of the Composite Bogie Frame Under Different Shapes and Loading Conditions," ICCM18, Korea, August June 22-26.
  3. Kim, J. S. and Lee, W. G., 2012, "Manufacturing and Structural Behavior Evaluation of Composite Side Beams Using Autoclave Curing and Resin Transfer Moulding Method," International Journal of Precision Engineering Manufacturing, Vol. 13, pp. 723-730. https://doi.org/10.1007/s12541-012-0094-3
  4. Kim, J. S., Shin, K. B., Yoon, H. J. and Lee, W. G., 2012, "Durability Evaluation of a Composite Bogie Frame with Bow-Shaped Side Beams," Journal of Mechanical Science Technology, Vol. 26, pp. 531-536. https://doi.org/10.1007/s12206-011-1034-3
  5. Yoo, W. S. and Haug E. J., 1986, "Dynamics of Flexible Mechanical Systems using Vibration and Static Correction Modes," Journal of Mech. Trans. Auto. Des Vol. 108, pp.315-322. https://doi.org/10.1115/1.3258733
  6. Spanos J. T. and Tsuha W. S., 1991, "Selection of Component Modes for Flexible Multibody Simulation," Journal of Guidance, Vol.14, No.2, pp.278-286. https://doi.org/10.2514/3.20638
  7. Shin S. S., Yoo W. S. and Tang J., 1993, "Effect of Mode Selection, Scaling, and Orthogonalization on the Dynamic Analysis of Flexible Multibody Systems," Mechanics of Structures and machines, Vol.21, No.4, pp.507-527 https://doi.org/10.1080/08905459308905199
  8. Kim S. S. and Haug E. J., 1990, "Selection of Deformation Modes for Flexible Multibody Dynamics," Mechanics of Structures and machines, Vol.18, No.4, pp.565-586. https://doi.org/10.1080/08905459008915685
  9. Wu S. C., Haug E. J. and Kim S. S., 1986, A Variational Approach to Dynamics of Flexible Multibody Systems, Technical Report, Univ' of IOWA.
  10. Garg V. K. and Dukkipati R. V., 1984, Dynamics of railway vehicle systems, Academic Press.