• 제목, 요약, 키워드: Railway vehicle

검색결과 1,518건 처리시간 0.029초

3호선 실제선로 조건에서의 레일경좌 변화에 따른 철도차량 주행안전성 해석 (Running Safety Analysis of Railway Vehicle depending on Rail Inclination Change on Actual Track of Subway Line No.3 in Seoul)

  • 김태건;이희성
    • 한국안전학회지
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    • v.31 no.3
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    • pp.130-135
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    • 2016
  • It is very hard to analyze the train derailment safety quantitatively at the curved section because of the diversified affect parameters including the complex interaction between wheel and rail, the train conditions such as the shape of wheel, suspension system, the track conditions such as the radius of curve, cant, transition curve, and the operation conditions, etc. Two major factors related to the running safety of railway vehicle are classified as the railway vehicle and the track condition. In this study, when the railway vehicle passing through curves of actual track condition of subway line NO.3 in seoul ($Yeonsinnae{\leftrightarrow}Gupabal$), the effect that has influence on running safety depending on rail inclination. The analysis result of 1/40 rail inclination condition is more favorable on running safety than other rail inclination conditions because derailment coefficient and wheel unloading ratio are the lowest.

트라이볼로지 관점에서 철도차량의 경량 제동 디스크와 라이닝의 특성 평가 (Characteristics Evaluation of Light Brake disc and Linning for Railway Vehicle In Terms of Tribology)

  • 김성권;이희성;권석진;권성태
    • Tribology and Lubricants
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    • v.27 no.2
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    • pp.95-100
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    • 2011
  • The brake disc materials for railway vehicle have been mainly used cast-iron. The brake disc and pad should be light, resist to a thermal crack and absorb enough friction energy. In order to satisfy this requirement, aluminum alloy brake disc for railway vehicle has been newly developed. The aluminum itself has not been considered the friction material for railway vehicle. However, in the case of aluminum composite with dispersed ceramic particles, friction characteristics, resistance to wear and heat are much improved. In the present study, aluminum composite brake disc of 20% ceramic particle and three kinds of organic pads have been tested in dynamometer. The results show that Al MMC brake disc and pad have good friction coefficient and wear rate, and thermal cracks in brake disc have not been initiated. Also, the Al MMC brake disc can be applied to railway vehicle of 150 km/h.

알루미늄 경전철 차체의 해석 및 시험 평가 (The Structural Analysis and Experimental Verification for Aluminum Light Railway Vehicle)

  • 박경창;정지호;이장욱;박근수;우관제
    • 한국철도학회:학술대회논문집
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    • pp.430-435
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    • 2008
  • Hyundai-Rotem Company has designed and manufactured Light Railway Vehicle (LRV) according to the Urban Rail Transit Code, which applies to urban railway vehicles in Korea. The Urban Rail Transit Code specifies the loads, for which vehicle bodies shall be capable of withstanding, identifies how material data shall be used and presents the principles to be used for design verification by analysis and test. The structural design of railway vehicle bodies depends on the loads they are subjected to and the characteristics of the materials they are manufactured from. Therefore Hyundai-Rotem Company has carried out Finite Element Analysis (FEA) and has performed load tests on the vehicle body according to the Urban Rail Transit Code. This research contains the results obtained by the analysis and the load tests. The analysis was carried out using I-DEAS Master Series 12 and load test were carried out using specially designed test jigs and equipment are used for the load tests.

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철도차량 스마트 운영관리를 위한 RFID 기술현황 및 개발 필요성 (A case study on the RFID technology and the necessity of development for smart management of railway vehicle)

  • 이상학;차정훈;서봉진;박찬영;하병용;이은미;김창현;이학용;김재식;김관수;송정훈;박세영;황시원;여진경
    • 한국전자통신학회논문지
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    • v.9 no.2
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    • pp.219-230
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    • 2014
  • 철도차량에 RFID 시스템을 도입함으로써 철도 부품관리 등을 포함한 철도차량의 스마트한 운영관리가 가능하도록 하는 것은 경제적, 산업적 뿐 아니라 사회적으로도 많은 필요성이 대두되고 있다. 본 논문에서는 해외의 RFID 연구 및 개발 활용사례를 조사 분석하였다. 철도 뿐 아니라 다양한 산업분야에 RFID 기술이 적용된 사례에 관해서도 조사하였다. 철도분야에서는 주로 차량위치 검지, 차량인식 등에 RFID 시스템이 사용된 경우가 거의 대부분이었고 부품의 단순이력 관리 등에 응용한 사례도 있었다. 본 연구를 통해, 세계적으로 이미 여러 산업분야에서 RFID 기술이 활용되고 있고 철도분야에서도 여러 국가에서 RFID 기술을 활용한 운영이 활성화되어 있으나 이러한 기술 활용은 주로 차량운행과 관련된 분야에 국한되어 있고 철도부품의 유지보수 등의 분야에서는 RFID 기술개발 및 활용이 미흡하다는 것을 알 수 있었다. 따라서 국내의 철도차량의 스마트한 운영관리를 위해서는 RFID 기술을 철도부품의 유지보수 및 이력관리에 적용할 수 있는 시스템이 반드시 필요하다.

Optimization of Suspension Under the Condition of Curved Track in Railway Vehicle

  • Choi, Jong Yoon;Li, Zheng Yuan;Baek, Seung Guk;Song, Ki Seok;Koo, Ja Choon;Choi, Yeon Sun
    • International Journal of Railway
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    • v.7 no.2
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    • pp.57-63
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    • 2014
  • This paper presents the optimization of suspension characteristics under the condition of curved track railway vehicles. Reducing lateral acceleration on curved track is an issue for high-speed railway vehicles. In terms of curved track running environments, reducing the lateral vibration of railway vehicles is critical to safety and curving performance. The properties of lateral damping and stiffness of both primary and secondary suspension show effect on wheel-set, bogie and car-body. Analysis for reducing the lateral vibration of rail vehicles with respect to the characteristics of both primary and secondary suspension has been developed using ADAMS/Rail. Response Surface Method has been chosen for the purpose of verifying correlation effects among design parameters. Also, this paper suggests the method for designing optimal suspension of railway vehicles on curved track. The optimization result indicates decrement of lateral acceleration on wheel-set by 3% and bogie by 1% on curved track. Finally, this paper comes to the conclusion that suspension system of railway vehicle (KTX I) is properly designed when regarding lateral vibration of railway vehicle on diverse curved track condition.

전기차량 주행 중 이선상태에 따른 급전계통의 전압, 전류 동특성 연구 (A study on the dynamic characteristic of voltage and current in a feeder system in case of cause contact loss on driving an electrical railway vehicle)

  • 김재문;박영;김양수;이종성
    • 대한전기학회:학술대회논문집
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    • pp.2215-2216
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    • 2011
  • In this study, the dynamic characteristic of a contact wire and pantograph suppling electrical power to electrical railway vehicle is investigated from an electrical response point of view. To analysis voltage and current waveforms by induced contact loss phenomenon on driving electrical railway vehicle, a hardware Simulator which considered contact loss between contact wire and the pantograph as well as contact wire deviation is developed. It is confirmed that a contact wire and pantograph model are necessary for studying the dynamic behavior of the pantograph system. Throughout prototype simulator and contact wire and catenary wire experiments, it is confirmed that current waveforms is distorted by contact loss phenomenon and in case of driving electrical railway vehicle.

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전기철도차량 주변압기의 %임피던스에 따른 차단기 개폐시 과도특성 분석 (Transient Characteristics by Transformer %Impedance at the time of Opening the Main Circuit Breaker on the Electric Railway Vehicle)

  • 창상훈
    • 전기학회논문지
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    • v.63 no.5
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    • pp.719-725
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    • 2014
  • Transient of Electric railway vehicle occurs when change to another state. The duration of the transient phenomenon only takes a few second. During this time is considered, the present of short circuit current and the normal state, the energy is present in the form of a magnetic field. Recognized by the vibration of the transient voltage or transient current at witch energy is present in the field. This paper is presented the result of transient characteristics by transformer % impedance at the time of opening and closing of the main circuit Breaker on the electric railway vehicle.

휠-레일 접촉 해석을 통한 협궤용 전동차 차륜 답면 분석 (Study on wheel profile for railway vehicle with narrow gauge by profile contact analysis)

  • 양헌석;이원상;남학기
    • 한국철도학회:학술대회논문집
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    • pp.146-151
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    • 2005
  • Main parameters of wheel-rail combination are investigated by profile analysis. A rolling radius difference is one of the main characteristics that describe a contact between wheelset and railway track, which in turn defines the dynamic behavior of a wheelset. This paper describes functional relation between lateral wheelset displacement and rolling radius difference or conicity on new/worn wheel of existing narrow gauge vehicle. Information about curving behavior and running stability are given by this both relations. The optimal wheel profile for railway vehicle with narrow gauge is adopted through this analysis. And, the applicable limit value of conicity which is used in order to do dynamic simulation of vehicle is presented.

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차량장착용 볼트의 안전성평가 (Safety evaluation of bolt for railway vehicle equipment use)

  • 문형석;유원희;김남포
    • 한국철도학회:학술대회논문집
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    • pp.660-668
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    • 2000
  • The stress of connection points between railway vehicle equipment and carbody is considered as one of the important railway safety factor under the vehicle service condition. If any material or equipment drop in to the rail during the service condition, the vehicle call be lose its control as well as run off the rail. The be]t safety evaluation method by using hand calculation is broadly used by manufacturer is introduced in this paper. Two different kinds of the bolt, such as regular bolt and the bolt aluminum extruded carbody use, are tested based on U.I.C according to equipment fixed. The effect of holder and base to bolt under tile loading condition is analyzed on this paper.

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여객열차 승차감 평가 및 향상방안 연구 (A Study on the Evaluation and Improvement of Riding Comfort for Railway Vehicle)

  • 유원희;최경진;고성순;박규한
    • 대한기계학회:학술대회논문집
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    • pp.170-175
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    • 2001
  • The riding comfort problem for railway vehicles of conventional line becomes increasingly important under the influence of the opening of Kyungbu high-speed and high-grade railway in 2004. Meaning of the term "riding comfort" of passenger train varies widely. In a narrow sense, the riding comfort means the comfort related to the vehicle vibration. But in a broad sense, the riding comfort means the comfort related to the cabin temperature, noise, illumination, smell, air-conditioning, etc. In this study, the riding comfort in a broad sense is treated and the direction of research for improving the riding comfort is presented.

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