캡슐형 고속대차 개발을 위한 인보드 대차 모델 구성 및 동특성 연구

초록

The inboard bogie, which is a bogie frame mounted inside the wheelset, was investigated, and the basic concept of that was developed. The major components and factors, such as the configuration of suspension and coefficients, were based on the HEMU-430X train. The dynamic model of the inboard bogie for dynamic performance analysis was configured using SIMPACK software. The inboard bogie based on HEMU has a lower critical speed than HEMU. The optimal series stiffness and damping coefficient of a yaw damper increased the critical speed. Dynamic performance assessments based on EN 14363 were carried out to determine which wheel profiles were suitable for an inboard bogie. One of the major objectives of the inboard bogie is increasing the energy efficiency of railway vehicles. To this end, another type of inboard bogie with single secondary lateral and vertical dampers and a mono link for the center pivot was also considered. Dynamic performance assessments were carried out for HEMU, inboard bogie type I, and II. Those inboard bogies had a lower critical speed than HEMU but were similar in running safety and ride characteristics and had better performance in the comfort index.

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