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장현목(Hyeonmog Jang),박영일(Yeongil Park),구병춘(Byeongchoon Goo),이재영(Jaeyoung Lee),박훈규(Hoongyu Park) 한국자동차공학회 2004 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
In this study. the impact analysis for the shunting procedure using the dynamic buffer characteristics of the coupler was developed. The railroad rule of S. Korea for the safety criteria of urban railroad vehiclewas adopted as the analysis condition for shunting. By using the equivalent stiffness. each car was modeled as one dimensional element. Analysis code was used by the POTAS-MSM (POwer Transmission Analysis Software-Multi Slip Mechanism) which was developed for the numerical analysis of dynamic system. The validation of this analysis was proved by comparing the numerical results of world-famous S company located in Europe.
김기남(Kinam Kim),장현목(Hyeonmog Jang),박영일(Yeongil Park) 한국자동차공학회 2007 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
As the growing interests in train safety have recently expanded into a wide range of domestic railway industries. an appropriate system which can absorb collision energy effectively is being adopted when collision accidents happen in a train. A coupler system shall have an advanced construction to ensure passenger safety from collision accidents rather than a design approach to provide merely a connection between trains. In this study the verification scheme for collision analysis and results is investigated in order to design the coupler system for electric locomotive complying with requirements of Safety Notice for urban rail vehicle.
김남욱(Namwook Kim),양시우(Siu Yang),김기남(Kinam Kim),장현목(Hyeonmog Jang),박영일(Yeong-il Park) 한국자동차공학회 2007 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
Coupler systems of trains are composed of buffer or hydraulic elements. These coupler systems can protect the train against the collision because the systems absorb the impact of the collision. The dynamic behavior of the coupler systems depends on the number of the cars which compose the train and stiffness of the cars. To analyze the dynamic behavior of the coupler systems, simulator is introduced in this paper, by which maximum force of the coupler systems and velocity of the cars can be calculated. In general, the first coupler which is attached at the front of the train gets the maximum force at simulation, and the maximum force of the first coupler doesn't relate to the number of the train when the number is bigger than three. The maximum force of the first coupler, however, increases along the stiffness of the cars because the maximum force increases as the period of the impact is shorten. The period approximately can be acquired from the stiffness of the coupler systems and the stiffness of the cars, so the maximum force, which affects the life time of the coupler systems, can be optimized if the coupler system is well designed.