• Title/Summary/Keyword: Double-deck Train

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FEM Results of Double-Deck Train Carbodies (2층열차 차종에 따른 차체 유한요소해석)

  • Hwang Won-Ju;Kim Hyung-Jin
    • Proceedings of the KSR Conference
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    • 2004.06a
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    • pp.915-920
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    • 2004
  • We have studied the technologies for a double-deck train. But, there are no standards and test methods for a double-deck train. Therefore, we apply the standard and test method of the general train to transform the structural analysis of a double-deck train. This study is the result of a structural analysis by the finite element method for double-deck train carbodies. The results of the study can be used as basic guidelines in designing double-deck trains in the future.

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Meta Model-Based Desgin Optimization of Double-Deck Train Carbody (2 층열차 차체의 meta model 기반 최적설계)

  • Hwang W.J.;Jung J.J.;Lee T.H.;Kim H.J.
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 2005.06a
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    • pp.387-392
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    • 2005
  • Double-deck train have studied in the next generation train in KRRI. Double-deck train have more seat capacities compared with single deck vehicles and is a efficient, reliable and comfortable alternative train. Because of heavy weight, weight minimization of double-deck train carbody is imperative to reduce cost and extend life-time of train. Weight minimization problem of the double-deck train car-body is required to decide 66 design variables of thicknesses for large aluminum extruded panel while satisfying stress constraints. Design variables are too many and one execution of structural analysis of double-deck train carbody is time-consuming. Therefore, we adopt approximation technique to save computational cost of optimization process. Metamodels such as response surface model (RSM) and kriging model are used to approximate model-based optimization is described. RSM is easy to obtain and expressed explicit function, but this is not suitable for highly nonlinear and large scaled problems. Kriging model employs an interpolation scheme and is developed in the fields of spatial statistics and geostatistics. Target of this design is to find optimum thickness of AEP to minimize weight of doulbe-deck train carbody. In this study, meta model techniques are introduced to carry out weight minimization of a double-deck train car-body.

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Analysis of Overseas Double Deck Train Operations (2층 열차의 해외운용 사례 분석)

  • Kim, Hyeong-Jin
    • Proceedings of the KSR Conference
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    • 2007.11a
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    • pp.1018-1023
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    • 2007
  • Recently, a double deck train is considered as the one of solutions for efficient and comfortable railroad transportation systems on busy lines without any big investment on existing railroad infra-structures in many countries. However, prior to the operations of double deck trains on existing lines, careful investigations should be performed since the double deck trains have big cross sections, high mass centers and no enough spaces for mounting electric equipments. In this paper, several operational cases of double deck trains in other countries have been reviewed for preparing double deck train operations in Korea.

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A Basic Study on a Double Deck Train Model (2층열차 차량모델에 대한 기초연구)

  • 김형진;황원주;허현무;강부병;박종희
    • Proceedings of the KSR Conference
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    • 2002.10b
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    • pp.826-833
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    • 2002
  • In recent years, due to the continuous concentration of population and sharp increment of commuters around Seoul metropolitan area, traffic jam has become one of severe problems along with housing in this area. In oder to solve the problem like the one mentioned above, several countries such as Japan, France and so on gradually operate double deck trains as efficient, reliable and comfortable mass transportation systems. However, the double deck train has weak points such as big cross sectional area and high mass center that cause unsafe vehicle running performances and interface problems between the vehicles and infrastructures. Therefore, prior to operate double deck trains on the existing lines, careful investigations should be performed. For these reasons, we have investigated foreign double deck trains and studied the technologies for a double deck train as an alternative way to carry heavy transportation efficiently and comfortably.

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The Strength Comparisons between Double deck Car body Structures with Al Extruded Panels and SUS (Al 압출재 및 SUS 2층열차 차체의 강도해석 비교 검토)

  • 황원주;김형진;강부병;허현무
    • Proceedings of the KSR Conference
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    • 2002.10b
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    • pp.801-806
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    • 2002
  • The operation of double deck train have increased in many countries such as Japan france, and the Netherlands as efficient, safe and convenient alternative transportation systems. Because of continuous concentration of population into Seoul metropolitan and serious traffic jam, the number of passengers using the commuter train have been increased rapidly. Considering these situations, we can find one of the solutions for heavy traffic problems through double deck trains. Stainless steel, and aluminum extruded panel are used to reduce the weight of double deck train. In this paper we compare the results of structural analysis of the double deck car body structures with Al extruded panels and stainless steel. We hope the results of this study may be used as basic guidelines in designing double deck trains in the future.

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The Study for Design of Formation and System of Double Deck Train (2층 열차의 편성 및 기기배치 설계에 관한 연구)

  • Park Kwang-Bok;Kim Hyeong-Jin;Baik Kwang-Sun
    • Proceedings of the KSR Conference
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    • 2004.06a
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    • pp.811-818
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    • 2004
  • This report was studied about the design of formation and layout of major components of double deck train operated at main line of the domestic. And we carried out the basic design of train formation, the layout of propulsion system and brake system and studied about the performance of train traction and brake system of double deck train.

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Concept designs of a double deck EMU train (2층 전동차 시스템 개념설계에 관한 연구)

  • Kim, Hyeong-Jin;Hwang, Won-Ju;Hur, Hyun-Moo;Baik, Kwang-Sun;Park, Kwang-Bok
    • Proceedings of the KSR Conference
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    • 2005.05a
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    • pp.245-250
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    • 2005
  • Currently, many countries in the world operate double deck trains as one of the efficient, reliable and comfortable mass transportation systems. However, double deck trains have relatively big cross sectional areas that cause interface problems between the vehicles and infrastructures, and do not have enough spaces for installing electric equipments. Therefore, prior to the operation of double deck trains on the existing lines in Korea, careful investigations should be performed. In this study, we have designed the concept model of a double deck EMU train system and analyzed related problems.

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Weight Minimization of a Double-Deck Train Carbody using Response Surface Method (반응표면 모델을 이용한 2층열차 차체의 경량화 설계)

  • Hwang Won-Ju;Kim Hyeong-Jin
    • Proceedings of the KSR Conference
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    • 2005.05a
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    • pp.453-458
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    • 2005
  • Weight minimization of double-deck train carbody is imperative to reduce cost and extend life-time of train. It is required to decide 36 thickness of aluminum extruded panels. However, the design variables are two many to tract. moreover, one execution of structural analysis of double-deck carbody is time-consuming. Therefore, we adopt approximation technique to save computational cost of optimization process. Response surface model is used to apporximate static response of double-deck carbody. To obtain plausible response surface model, orthogonal array is empolyed as design of experiment(DOE). Design improvement by approximate model-based optimization is described. Accuracy and efficiency of optimization by using response surface model are discussed.

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A Double Deck EMU Train System for the Korean Railroad Network (국내실정을 고려한 2층 전동차 차량시스템 기초연구)

  • Kim, Hyeong-Jin;Hwang, Won-Ju;Hur, Hyun-Moo;Baik, Kwang-Sun;Park, Kwang-Bok
    • Proceedings of the KSR Conference
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    • 2004.06a
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    • pp.602-607
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    • 2004
  • Several countries such as Japan, France and so on gradually operate double deck trains as efficient, reliable and comfortable mass transportation systems. However, the double deck trains have relatively big cross sectional areas and high mass centers that cause unsafe vehicle running performances and interface problems between the vehicles and infrastructures, and do not have enough spaces for electric equipments. Therefore, prior to operate double deck trains on the existing lines in Korea, careful investigations should be performed. In this study, we have roughly designed a double deck EMU train system for the existing lines around Seoul metropolitan area.

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Preliminary Investigations of a Double Deck Train(EMU type) System (EMU type 2층열차 차량시스템에 관한 기초연구)

  • Kim Hyeongjin;Hwang Wonju;Hur Hyunmoo;Park Kwangbok
    • Proceedings of the KSR Conference
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    • 2003.10c
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    • pp.412-417
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    • 2003
  • In recent years, efficient commuter transportation has become one of major issues to be taken into account around Seoul metropolitan area. In oder to solve the problems, several countries such as Japan, France and so on gradually operate double deck trains as efficient, reliable and comfortable mass transportation systems. However, the double deck trains have relatively big cross sectional areas and high mass centers that cause unsafe vehicle running performances and interface problems between the vehicles and infrastructures, and do not have enough spaces for electric equipments. Therefore, prior to operate double deck trains on the existing lines in Korea, careful investigations should be performed. For these reasons, we have studied the double deck train system for the existing lines around Seoul metropolitan area as an alternative way to carry heavy transportation efficiently and comfortably.

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