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降低高速列车产生的噪声,必须降低车体下部噪声。本文对用吸声板降低车体下部噪声的措施作了介绍,对吸声材料的性能进行了评价,对贴附在实际列车上的吸声板的最佳面积进行了阐述。
Reduce the noise generated by high-speed train, the lower part of the body must reduce noise. In this paper, the measures to reduce the noise in the lower part of the car body by using the sound absorbing plate are introduced. The performance of the sound absorbing material is evaluated. The optimum area of the sound absorbing plate attached to the actual train is described.