Abstract: The relation between train door’s modes and transient pressure wave for high-speed train’s crossing is discussed. The basic theory on mode test is introduced. The basic mode of a single train’s door was obtained by hammering-impulse excitation. The developing mode of train’s door-frame system was obtained by sinusoidal frequency-scanning excitation. Combining the basic mode and the developing mode of the train’s door, its frequencies and modes of bending and torsional vibrations can be understood. With the improvement of the mode’s parameters of the train’s door, the effect of transient pressure wave in the high-speed train’s crossing can be reduced and relaxed.

Key words: vibration and wave, train, s door, mode test, transient pressure wave

摘要： 讨论高速列车会车瞬态压力波与车门模态的关系。介绍模态试验的基本理论。采用锤击脉冲激励获得单个车门的基本模态。采用正弦扫频激励获得车门 - 框架系统的衍生模态。将车门基本模态和衍生模态相结合，可了解车门弯曲和扭曲的频率与振型。通过采取措施改善车门模态参数，将减缓高速列车会车瞬态压力波的效应。

关键词: 振动与波, 列车车门, 模态试验, 瞬态压力波