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Comparison of Simulation Models for Train Buffer Couplings  

Jang, Hyeon-Mog (Graduate School of Railroad, Seoul National University of Technology)
Kim, Nam-Wook (School of Mechanical and Aerospace Engineering, Seoul National University)
Park, Yeong-Il (School of Mechanical Design and Automation Engineering, Seoul National University of Technology)
Publication Information
Transactions of the Korean Society of Automotive Engineers / v.18, no.4, 2010 , pp. 107-114 More about this Journal
Abstract
Coupling systems for trains need more complicated buffer equipments than existing systems because the recent tendency of the regulations enforces trains to be safe for collisions even when the driving speed is higher than before. Using hydraulic buffer is an effective way to satisfy the requirement while it causes the increase of the cost for the coupling system. In this study, we introduce the methodology to build a simulation model for the hydraulic buffer, which could be installed into the coupling systems. In the simulation model of the hydraulic buffer, the reacting force is determined by both buffer stroke and speed whereas the elastic buffer model is designed by using only the buffer stroke in other studies. The simulation results with the advanced hydraulic buffer model shows that the simulating results can be close the real experimental results around 10%, and, if we considers friction forces, the simulation calculates the maximum force within 10% comparing to the experimental.
Keywords
Buffer couplers; Train; Collision experiment; Dynamic simulation;
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