A Study on the Critical Speed of 1/5 Scaled Bogie Model

1/5 스케일 축소대차 모델 임계속도에 관한 연구

  • 허현무 (한국철기술연구원, 철도시스템연구본부) ;
  • 박준혁 (한국철기술연구원, 철도시스템연구본부) ;
  • 김민수 (한국철기술연구원, 철도시스템연구본부) ;
  • 유원희 (한국철기술연구원, 철도시스템연구본부) ;
  • 박태원 (아주대학교 기계공학과)
  • Published : 2007.12.31


The critical speed of railway bogie is very important in terms of the verification of the vehicle design procedure and safety. The dynamic performance of bogie is tested on the railway roller rig in a laboratory in place of field testing on track. But, the testing on the full scale roller rig caused many problems relating to test costs, test time and has the difficulty in test condition setup. To overcome these problems, scaled models were used in the filed of railway vehicle design and test. In this paper, we have studied the critical speed of scaled bogie model. We have made the 1/5 scaled bogie, the scaled roller rig and analyzed the critical speed of the scaled bogie through the numerical simulation and running test of the scaled bogie. We have confirmed that the analysis results of the critical speed correspond with the test results.


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