• Title/Summary/Keyword: AEP(Alluminum extruded panel)

Search Result 4, Processing Time 0.018 seconds

Strength Comparision of a Double-Deck Train Carbody by Optimization of the Underframe Thicknesses (언더프레임 두께 최적화에 따른 2층열차의 구조강도비교)

  • Hwnag Won-Ju;Kim Hyeung-Jin
    • Proceedings of the KSR Conference
    • /
    • 2004.06a
    • /
    • pp.748-753
    • /
    • 2004
  • Aluminum alloy is very useful material for high speed transportations due to its high strength and light weight characteristics. Especially because of a weight reduction a large extrustion of aluminum alloy carbody has been manufactured. This aluminum extruded panel is a hallow extruded panel. This shape and thickness is various by designer's sense and experience and VAW's profiles. So it is important to find an optimized shape and thickness of AEP. In this study we get the AEP's thickness to minimize a weight by applying an applying an optimization algorithm. The results of the study can be used as basic guidelines double-deck trains in the future.

  • PDF

A Study on the Structural Analysis for the Aluminum Alloy Carbody of a Double-Deck EMU (2층열차 차체의 구조강도해석에 관한 연구)

  • Hwang Won-Ju;Kim Hyeong-Jin
    • Proceedings of the KSR Conference
    • /
    • 2003.10c
    • /
    • pp.91-97
    • /
    • 2003
  • In many countries such as Japan, France and so on, the number of double-deck trains has been dramatically increased for the purpose of public traffic. Several researchers have performed feasiblilty studies related to the operations of double deck rolling stock vehicles in Korea since 2001. In recent years, rolling stock vehicles are required to have light weight to save energy consumption and maintenance costs. For these reasons, the standard EMU vehicle developed by KRRI and Kwan-Ju EMU(Electric Multi Unit) are made of aluminum extruded panels. The concept model of a double-deck rolling stock vehicle investigated in this study is also designed to use AEP(Aluminum Extruded Panel). In this paper, the methods related to the structural strength improvements of the car body are proposed through careful modifications of thicknesses and shapes of AEP.

  • PDF

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

  • Hwang Won-Ju;Kim Hyung-Jin
    • Proceedings of the KSR Conference
    • /
    • 2004.06a
    • /
    • pp.915-920
    • /
    • 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.

  • PDF

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
    • /
    • 2005.05a
    • /
    • pp.453-458
    • /
    • 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.

  • PDF