A Study on the Measurement of New Concept for the Contact Force between Rail and Wheel

신개념의 레일.차륜간 접촉력 측정에 관한 연구

  • 홍용기 (서울산업대 철도전문대학원, 한국철도기술연구원) ;
  • 유원희 (한국철도기술연구원) ;
  • 이희성 (서울산업대 철도전문대학원)
  • Published : 2007.12.31


The derailment is defined as phenomena in which the wheels run off the rail due to inordinate lateral force generated when wheel flange contacts with the rail. Derailment coefficient is typical standard assessing running safety and derailment. The traditional method measuring by strain gage adhered to wheels is very complicated and easy to fail. It also requires too much cost and higher measurement technique. Therefore it can hardly ensure safety because we can't confirm at which time we need to identify safety. In this paper, we principally researched the method measuring easily wheel load generated by contacts between wheel flange and the rail, and lateral force. Correlation of vibration and displacement which was related physical amounts of wheel load and lateral force, was investigated and analyzed through analysis, experiment and measurement. And it is presents new measurement method of derailment coefficient which can estimate derailment possibility only by movement of vibration and displacement, by which we understand the rate for acceleration and displacement to contribute wheel load and lateral force and compare actual data of wheel load and lateral force measured from wheel.


  1. 홍용기 외, 인천국제공항철도 전동차의 주행안전성 평가, 한국철도학회, 한국철도학회 논문집 10권 5호, pp.619-625, 2007.10.31
  2. 홍용기 외, 철도차량의 진동과 변위로부터 유추할 수 있는 탈선가 능성에 관한 연구, 한국철도학회2007년 춘계학술대회 논문집, pp.743-748, 2007. 5. 17
  3. 함영삼, 철도차량의 탈선메커니즘 연구동향, 철도웹진 58호, 한국 철도기술 Vol.06, pp.23-29, 2006
  4. 오키시마 키하치, 열차 탈선 방지의 이론과 실제, 1960, 교우사
  5. 오키시마 키하치, 철도차량 특론, 1965, 교우사
  6. 함영삼 외, 인천국제공항철도 통근형 차량의 주행안전성 평가, 한국철도학회 2006년도 추계학술대회논문집, 2006. 11. 9
  7. 홍용기 외, 철도차량의 새로운 탈선계수 측정방법에 관한 연구, 한국철도학회 2007년 추계학술대회논문집, 2007. 11. 8