Study on a correlation between ride comfort and acceleration of rail vehicle

초록

As a plan for express subway, we are currently studying the express train system by applying a high performance train. The high performance train has a distinguished acceleration (max. 6km/h/s) when compared to the present train. Although it has an excellent acceleration, it might be hard to be practical if it gives passenger a low ride comfort due to an increasing performance. Therefore, it is necessary to evaluate the ride comfort of high performance train in advance experimentally or numerically. In this study, we analyzed the ride comfort of high performance train only numerically because it is not possible yet to make a practical test of high acceleration in condition of the high performance train being developed now. And to verify the numerical results, the ride comforts of the various present train types were evaluated under the acceleration range of 1.0~3.0km/h/s. ISO 2631-1 was applied to evaluate the ride comfort. As a result, it was found that under the acceleration up to 6.0km/h/s, ride comfort index increases linearly with the acceleration, but still be under a permitted limit. Therefore, acceleration of high performance train is acceptable in view of ride comfort.