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차량고속주행시 차량 및 궤도거동에 미치는 궤도틀림의 영향
이진욱(Lee Jin-Wook),양신추(Yang Sin-Chu),홍진완(Hong Jin-Wan) 한국철도학회 1998 한국철도학회 학술발표대회논문집 Vol.- No.-
In this paper, a numerical method for analyzing the interactions between train and track is presented. The effect of track irregularity on high speed running trains and track is examined by parametric studies. Two types of vertical track irregularity are considered. The first one is ideally assumed to a sine wave to investigate train and track behaviors with the change of its shape feasibly. The second one is artificially generated from PSD of track irregularity which was established from the measured data on real railways. In the track dynamic model, rail is considered to have a distributed mass and to be supported discretely at sleepers above ballast divided into three layers. Then, the contact between wheel and rail is modeled by a nonlinear Hertzian spring.
Vampire를 이용한 경부고속철도 차량의 동적 안정성 해석
박찬경(Park Chan-Kyoung),김기환(Kim Ki-Hwan),홍진완(Hong Jin-Wan),심태웅(Shim Tai-Woong) 한국철도학회 1998 한국철도학회 학술발표대회논문집 Vol.- No.-
Dynamic stability of a high speed train is very important. This paper presents a dynamic stability analysis of K-TGV using Vampire Program. The analysis of stability on this paper is performed in condition of track irregularity, curved track and strong gust. The critical speed of K-TGV is 140㎧, and it is stable when runs on 7000R(cant 150㎜) curved track and on linear track with the body exerted 101kN lateral impulse force.