The invention provides a thin-plate sound absorption device applied to a bogie cabin of a high-speed train, the thin-plate sound absorption device is of a cuboid cavity structure, one surface of the thin-plate sound absorption device is provided with through holes arranged in an array, and the through holes penetrate through an inner cavity of the thin-plate sound absorption device and the outside; the sound absorption device is designed according to the resonance peak noise frequency in the cabin. According to the sound absorption device, the Helmholtz resonator principle is applied, and noise of specific frequency is reduced. The thin plate device is arranged on the top of a high-speed train bogie cabin, the perforated face faces the interior of the cabin, aerodynamic noise in the high-speed train bogie area is attenuated and dissipated through the thin plate device, and flow-acoustic resonance peak noise is effectively reduced.
本发明提出一种应用于高速列车转向架舱的薄板吸声装置,薄板吸声装置为长方体的空腔结构,薄板吸声装置的一面为阵列排布的穿孔,穿孔贯通薄板吸声装置的内腔与外界;吸声装置针对舱内共振峰值噪声频率设计。本发明吸声装置应用赫姆霍兹共振器原理,针对特定频率的噪声降噪。置于高速列车转向架舱顶,穿孔面朝向舱内,高速列车转向架区域的气动噪声通过薄板装置得衰减、耗散,流声共振峰值噪声得到了有效降低。
Thin plate sound absorption device applied to bogie cabin of high-speed train
一种应用于高速列车转向架舱的薄板吸声装置
2024-08-02
Patent
Electronic Resource
Chinese