修正胎体弦轮廓载重子午线轮胎的降噪机理

doi:10.13229/j.cnki.jdxbgxb20200505

摘要/Abstract

摘要：

以载重子午线轮胎295/80R22.5为研究对象，结合模态声学传递向量技术和声学边界元法计算滚动轮胎的振动噪声。采用修正胎体弦平衡轮廓设计理论对轮胎的胎体轮廓进行重新设计，并揭示了修正胎体弦轮廓轮胎振动噪声降低的原因。结果表明，修正胎体弦轮廓轮胎胎侧处的质量降低了7.48%，降噪量达1.98 dB，并显著降低了胎面和胎侧处的振动加速度响应，特别是降低了声压峰值对应的440 Hz和488 Hz频率处的振动加速度响应，抑制了胎面和胎侧的振动，进而降低了轮胎的振动噪声。同时，修正胎体弦轮廓轮胎降低了声学正贡献部件胎面和胎侧处的声压幅值贡献，增加了声学负贡献部件的数量，从而实现降低轮胎振动噪声的目的。

关键词: 车辆工程, 载重子午线轮胎, 振动噪声, 修正胎体弦轮廓, 降噪方法

Abstract:

Taking the truck radial tire 295/80R22.5 as the research object, the characteristics of vibration noise were analyzed using modal acoustic transfer vector technique and the acoustic boundary element theory. By means of modal acoustic contribution analysis method, the contribution of each modal shape to tire vibration noise was studied. Based on the this, the carcass chord contour design theory was used to redesign the radial tire. Then, the mechanism of reducing tire vibration noise was analyzed through acoustic contribution analysis. Compared to original designed tire, the redesigned tire reduces 7.48% sidewall mass and 1.98 dB tire vibration noise respectively. This is due to that the adoption of the modified carcass string contour design theory significantly reduces the vibration acceleration response of the tread and sidewall, especially at the peak of 440 and 488 Hz. Furthermore, the redesigned tire reduces noise pressure of positive acoustic contribution (tire tread and sidewall, respectively) and increases the numbers of the negative panels.

Key words: vehicle engineering, truck radial tire, vibration noise, modified carcass string contour, noise reduction method

中图分类号:

U463.3

杨建,夏琦,周海超,王国林. 修正胎体弦轮廓载重子午线轮胎的降噪机理[J]. 吉林大学学报(工学版), 2021, 51(4): 1198-1203.

Jian YANG,Qi XIA,Hai-chao ZHOU,Guo-lin WANG. Noise reduction mechanism of truck radial tire based on modified carcass string contour design[J]. Journal of Jilin University(Engineering and Technology Edition), 2021, 51(4): 1198-1203.

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关键点	坐标值
关键点	X/mm	Y/mm
A	496.850	0
B	494.618	62.359
C	492.492	81.248
D	392.296	140.817
E	300.554	83.380