• Title/Summary/Keyword: Gauge-Adjustable Wheelset

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Strength Analysis of Locking Parts for Adjustable Wheelset during the Gauge Changeover Operation - (궤간 가변 주행시 궤간 가변 잠금부품들에 대한 강도해석)

  • Kim, Chul-Su;Ahn, Seung-Ho;Chung, Kwang-Woo;Jang, Seung-Ho;Jang, Kook-Jin;Kim, Jung-Kyu
    • Proceedings of the KSME Conference
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    • 2007.05a
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    • pp.189-194
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    • 2007
  • To reduce the cost and time of transport in Eurasian railroad networks such as TKR, TCR and TSR owing to the problem of different track gauges(narrow/standard/broad gauge), it is important to develop the gauge - adjustable wheelset system to adapt easily to these gauges. Moreover, freight trains having the gauge - adjustable wheelset will be run various curved tracks in railroad networks. Therefore, to assure the safety of the gauge-adjustment wheelset system, it is necessary to evaluate integrity of locking parts in the system using stress analysis. In this study, it was performed to contact stress analysis of locking parts by using FEA(finite element analysis) simulator during the gauge changeover operation and freight trains' service in the curved track, respectively.

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Durability Evaluation of the Gage - Adjustable Wheelset System According to UIC Standard (UIC 기준에 따른 궤간 가변 윤축의 내구성 평가)

  • Kim, Chul-Su;Ahn, Seung-Ho;Chung, Kwang-Woo;Jang, Seung-Ho;Jang, Kook-Jin;Kim, Jung-Kyu
    • Proceedings of the KSR Conference
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    • 2008.06a
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    • pp.2156-2162
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    • 2008
  • To reduce the cost and the time of transport in Eurasian railroad networks such as TKR, TCR and TSR owing to the problem of different track gauges (narrow/standard/broad gauge), it is important to develop the gauge - adjustable wheelset system to adapt easily to these gauges. The gauge - adjustable wheelset system in the transcontinental railway have been proposed as a more effective way in comparison with other techniques for overcoming difference in track gauges. Assume that the freight train with gauge adjustable wheelset system is running from domestic train network to TCR, TSR in Eurasian continent, it is necessary to estimate the safety of this system. This study is evaluated at examination of safety for freight train with gauge adjustable wheelset system by simulated durability analysis. Moreover, the predicted fatigue life at running track using the durability simulator was verified by the durability test according to UIC standard.

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Strength Analysis for Compressed Coil Spring in the Gage - Adjustable Wheelset System (궤간 가변 윤축의 압축스프링에 대한 강도해석)

  • Kim, Chul-Su;Ahn, Seung-Ho;Chung, Kwang-Woo;Jang, Seung-Ho;Jang, Kook-Jin;Kim, Jung-Kyu
    • Proceedings of the KSR Conference
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    • 2007.11a
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    • pp.1012-1017
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    • 2007
  • To reduce the cost and the time of transport in Eurasian railroad networks such as TKR(Trans-Korea Railway), TCR(Trans-China Railway) and TSR(Trans-Siberia Railway) owing to the problem of different track gauges (narrow/standard/broad gauge), it is important to develop the gauge - adjustable wheelset system to adapt easily to these gauges. Moreover, this system accomplishes periodically a conversion operation from the gauge variable segment between different gauge. Gauge adjustable compression coil spring during conversion process accomplishes repetitively a central role for operation mechanism between flange and locking part. Therefore, to assure the safety of the gauge-adjustment wheelset system, it is necessary to stress analysis of the optimized spring in the system. In this study, it was performed to optimal design of the spring for stress analysis by using the genetic algorithm.

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Structural Analysis of Locking Parts in the Gauge -Adjustable Wheelset (궤간 가변 윤축의 잠금부품들에 대한 구조해석)

  • Kim, Chul-Su;Chang, Cheon-Soo;Jang, Seung-Ho;Kim, Jung-Kyu
    • Journal of the Korean Society for Railway
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    • v.11 no.1
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    • pp.33-38
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    • 2008
  • To reduce the cost and time of transport in Eurasian railroad networks such as TKR, TCR and TSR owing to the problem of different track gauges (narrow/standard/broad gauge), it is important to develop the gauge-adjustable wheelset system to adapt easily to these gauges. Moreover, freight trains having the gauge-adjustable wheelsets should be passing various curved tracks in railroad networks. Therefore, to assure the safety of the gauge-adjustment whellset system, it is necessary to evaluate integrity of locking parts in the system using stress analysis. This study is focused on analyzing contact stress of locking parts by using FEA(finite element analysis) simulation during the gauge changeover operation and freight trains' service in the curved track, respectively.

Fatigue Analysis of Locking Parts in the Gauge - Adjustable Wheel Set System in the Curved Track (곡선부 주행시 궤간 가변 잠금부품들의 피로해석)

  • Kim, Chul-Su;Ahn, Seung-Ho;Chung, Kwang-Woo;Jang, Seung-Ho;Kim, Jung-Kyu
    • Proceedings of the KSR Conference
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    • 2006.11b
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    • pp.1-6
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    • 2006
  • The gauge - adjustable wheelset system in the transcontinental railway represents a more effective way in comparison with other techniques for overcoming difference in track gauges. Moreover, freight trains having the gauge - adjustable wheelsets will be run various curved tracks of Eurasian railroad network such as TKT, TCR and TSR. Therefore, to assure the safety of the gauge - adjustable adjustment wheelset system, it is necessary to evaluate durability of locking parts in the system during freight trains' service in the curved track. In this study, it was performed to estimate fatigue life of locking parts under lateral wheel pressure by using durability simulator.

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On the conceptual design of the gauge-adjustable wheelset for the north-east asia network (동북아 철도망 연계를 위한 궤간가변장치 개념설계)

  • Jang Seung-Ho;Na hui-Seung;Han Jun-Seok
    • Proceedings of the KSR Conference
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    • 2005.05a
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    • pp.281-284
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    • 2005
  • A gauge-adjustable system can be used for the fast and safe transportation in the railways with different gauges instead of transshipment or bogie-changing. The system will be necessary to connect the trans-Korean railway with the transcontinental railway effectively. In this paper, the technical requirements for the gauge-adjustable system used for the north-east asia network were studied and the conceptual design of the system was performed. For the purpose, the specification was made and the QFD and TRIZ methods are used.

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Durability Evaluation of the Korean Gauge - Adjustable Wheelset System (궤간가변 윤축시스템의 내구성 평가)

  • Ahn, Seung-Ho;Chung, Kwang-Woo;Jang, Seung-Ho;Kim, Chul-Su
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.13 no.12
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    • pp.5669-5675
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    • 2012
  • To reduce the cost and the time of transport in Eurasian railroad networks such as TKR(Trans-Korea Railway), TCR(Trans-China Railway) and TSR(Trans-Siberia Railway) owing to the problem of different track gauges (narrow/standard/broad gauge), it is important to develop the gauge-adjustable wheelset(GAW) system to adapt easily to these gauges. The Korean GAW system is developing and will be adapting to the brand new freight trains' to improve the conventional overseas GAW system. In this study, structural and durability analyses are performed from the viewpoint of the safe-life design. The core parts of the system might be safe in range of $1{\times}10^7$ cycles from the result of durability analysis. Moreover, to examine the safety of the system while running on a track, rig fatigue test was performed according to UIC code. The safety of the Korean GAW system is demonstrated through testing that all safety-relevant conditions are satisfied.