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http://dx.doi.org/10.5762/KAIS.2021.22.3.199

Analytical Study of High Speed Railway Braking Disc-hub for Enhancement of Cooling Performance  

Lee, Yong-Woo (Department of Mechanical and Automotive Engineering, Shinhan University)
Kim, Jang-Hoon (S&WISE Co., Ltd.)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.22, no.3, 2021 , pp. 199-207 More about this Journal
Abstract
This study aimed to improve the performance of the KTX (Korea Train Express) brake system. To develop a braking disc-hub for the high-speed rail, the model performance was analyzed by finite element analysis, and the analysis results were verified using the braking test results. In addition, heat transfer analysis, thermal stress analysis, natural frequency analysis, and static analysis were conducted to examine the mechanical performance of the braking system. By deriving the design factors and conducting parametric analyses according to the shape of the hub, this study derived the optimal specifications that could improve heat dissipation and reduce weight. The cooling efficiency and structural performance of the optimization model were improved during braking compared to the existing model. It is expected that the design verification will be carried out through analyses of the optimal specifications so that it can be used in the development of brakes in railway vehicles and motor vehicles.
Keywords
High Speed Train; Brake System; Finite Element Analysis; Heat Transfer; Natural Frequency; Static analysis;
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