Vehicle dynamic simulations on high-speed train of China have been done under cooperative project of China Academy of Railway Sciences (CARS) and Japan Railway Technical Research Institute (RTRI). Under this project, to make our vehicle dynamic simulation better, a validity of the simulations by comparing their results of CARS using multipurpose program, for examples MEDYNA, ADAMS, NUCARS etc., and RTRI using own developed program are discussed and evaluated. Therefore, because using different modeling of simulation each other, the influences of difference of modeling on the results are discussed in this report. The differences of simulation results between RTRI and CARS were seen in vibratory frequency. We will validate the verification of the each simulation model through running test in China this year.

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