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http://dx.doi.org/10.7467/KSAE.2012.20.3.067

Collision Analysis of the Next Generation High-speed EMU Using 3D/1D Hybrid FE Model  

Kim, Geo-Young (Department of Rolling Stock System Engineering, Seoul National University of Science & Technology)
Koo, Jeong-Seo (Department of Rolling Stock System Engineering, Seoul National University of Science & Technology)
Publication Information
Transactions of the Korean Society of Automotive Engineers / v.20, no.3, 2012 , pp. 67-76 More about this Journal
Abstract
In this paper, collision analysis of the full rake for the Next Generation High-speed EMU is conducted using a 3D/1D hybrid model, which combines 3-dimensional (3D) front-end structure of finite element model and 1-dimensional (1D) multi-body dynamics model in order to analyze train collision with a standard 3D deformable obstacle. The crush forces, passengers' accelerations and energy absorptions of a full rake train can be easily obtained through a simulation of a 1D dynamics model composed of nonlinear springs, dampers and masses. Also the obtained simulation results are very similar to those of a 3D model if an overriding behavior does not occur during collision. The standard obstacle in TSI regulation has been changed from a rigid body to a deformable body, and therefore 3D collision simulations should be conducted because their simulation results depends on the front-end structure of a train. According to the obstacle collision analysis of this study, the obstacle collides with the driver's upper structure after overriding over the front-end module. The 3D/1D hybrid model is effective to evaluate a main energy-absorbing module that is frequently changed during design process and reduce the need time of the modeling and analysis when compared to a 3D full car body.
Keywords
Collision analysis; Multi-body dynamics model; Hybrid model; Overriding behavior; Deformable obstacle;
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Times Cited By KSCI : 1  (Citation Analysis)
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