철도차량 대차프레임의 하중이력 특성분석 및 피로수명평가
Analysis of load history characteristic and fatigue life evaluation of railway vehicle bogie frame
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초록
철도차량의 주행장치는 차체의 하중을 지지하는 중요한 부품으로, 정적 및 동적 하중이 복잡하게 작용하고 있다. 따라서, 주행장치의 설계 및 강도평가를 위해서는 정하중시험, 피로시험 및 주행성능시험 등 다양한 시험이 요구되고 있다. 그러나, 다축하중이 작용하는 대차프레임의 피로수명을 평가하는 세부적인 절차가 규정되어 있지 않다. 본 논문에서는 다양한 선로에서 KTX 대차프레임의 하중이력을 측정하고 특성을 분석하였다. 하중이력은 측정위치에 따라서 단축, 다축하중 등 다양한 특성을 나타내었다. 이러한 특성을 고려하기 위하여 다양한 평가방법을 적용하였고, 이로부터 적합한 피로수명평가 방법을 제시하였다.
Abstract
The bogie system of the railway vehicle is an important part for supporting the load of the vehicle body, and static and dynamic loads are applied. Therefore, various tests such as static load test, fatigue test, and running performance test are required for the design and strength evaluation of the bogie system. However, there is no detailed procedure for evaluating the fatigue life of a bogie frame with multi-axial load. In this paper, the load history of KTX bogie frame is measured and analyzed in various track. The load history had various characteristics such as uni-axial and multi-axial loading depending on the measurement position. In order to consider these characteristics, various evaluation methods are applied to suggest a suitable fatigue life evaluation method.
참고문헌 (16)
- Kassner, M., "Fatigue strength analysis of a welded railway vehicle structure by different methods", Int. Journal of fatigue, 34, pp.103~111 (2012)
- Han, J., "Fatigue strength evaluation of a bogie frame for urban maglev train with fatigue test on full-scale test rig", Engineering Failure Analysis, 31, pp.412~420 (2013)
- Movie power units bogies and running gear bogie frame structure strength tests, , International Union of Railway, ~, pp.UIC Code 615-4 (1994)
- Railway applications-Wheelsets and bogies-Methods of specifying structural requirements of bogie frames, , European Committee for Standardization, ~, pp.EN 13749 (2011)
- Test methods for static load of body structures of railways rolling stock, , Japanese Industrial Standard, ~, pp.JIS E7105 (1994)
- 신익현, "서울도시철도 7호선 신형전동차 대차프레임 구조 안전성 평가 연구", 한국도시철도학회논문집, 2(3), pp.203~208 (2014), 한국도시철도학회
- 김용민, "도시철도차량의 사용수명 예측에 관한 사례 연구", 한국도시철도학회논문집, 2(1), pp.119~126 (2014), 한국도시철도학회
- Esderts, A., "Fatigue strength analysis of welded joints in closed steel sections in rail vehicles", Int. Journal of fatigue, 34, pp.112~121 (2012)
- Fu, D., "Analysis on the fatigue cracks in the bogie frame", Engineering Failure Analysis, 58, pp.307~319 (2015)
- Passenger rolling stock Trailer bogies – running gear bogie frame structure strength tests, , ~, pp.UIC 515-4 (1993)
- Seo, J.W, "Fatigue Design Evaluation of Railway Bogie with Full-Scale Fatigue Test", Advances in Materials Science and Engineering, 2017, pp.1~11 (2017)
- Quaresimin, M., "Fatigue behavior and life assessment of composite laminates and mutiaxial loadings", Int. Journal of fatigue, 32, pp.2~16 (2010)
- Quaresimin, M., "On the investigation of the biaxial fatigue behavior of unidirectional composites", Composites Part B, 54, pp.200~208 (2013)
- 이학주, "동력학 시뮬레이션에 의한 다축 랜덤하중 하에서 자동차 서브프레임의 고 되풀이수 피로손상 평가", 대한기계학회논문집 A, 27(6), pp.946~953 (2003), 대한기계학회
- Backstrom, M., "A review of multiaxial fatigue of weldments : Experimental results, design code and critical plane approaches", Fatigue Fract. Eng.. Mater. Struct, 24, pp.279~291 (2001)
- H o b b a c h e r , A, "Recommendations for fatigue design of welded joints and components", International Institute of Welding(IIW)document XIII-2151r4, 2008