Vibration characteristics analysis on driving-axle main-reducer

doi:10.3969/j.issn.1674-8484.2021.03.003

Abstract

Abstract:

The vibration characteristics were analyzed for the main-reducer of an automobile drive-axle housing by using simulations and tests. A finite element (FE) model was established with HyperMesh. Modal analysis was carried out within an OptiStruct module to solve the natural frequency and modal vibration mode of the main-reducer housing. Modal experiments and vibration and noise tests were carried out. The FE analysis results were compared with the experimental results. The results show that the main-reducer shell natural frequency is greater than 1.2 kHz with a large stiffness. The modal shapes happen mainly at the rear end of main-reducer housing. The accuracy of the main reducer housing FE model is verified. The vibration and noise level exceed the standard value at 1 800~2 000 r/min. By analyzing its frequency and frequency doubling, it is speculated that it is caused by the vibration of the main-reducer gear-teeth. These results may be references for NVH (subsequent noise, vibration and harshness) performance optimization of drive-axle.

Key words: automotive engineering, driving axle, main-reducer housing, finite element method, modal analysis, vibration and noise tests

CLC Number:

U463.2

HUANG Zhichao, ZHAO Yiguang, HU Yihua, LIU Ming. Vibration characteristics analysis on driving-axle main-reducer[J]. Journal of Automotive Safety and Energy, 2021, 12(3): 298-304.

Figures/Tables 16

References 12

[1]	XIAO Wangqiang, HUANG Yuxiang, JIANG Hong, et al. Effect of powder material on vibration reduction of gear system in centrifugal field[J]. *Powder Tech, 2016, 294*:146-158. doi: 10.1016/j.powtec.2016.01.038 URL
[2]	Koronias G. Elastomultibody dynamics of RWD axle whine phenomena[D]. Loughborough: Loughborough University, 2012.
[3]	张杰, 刘剑益. MPV驱动桥主减速器齿轮啮合斑点调整对整车NVH的影响[J]. 现代制造技术与装备, 2017(6): 107-108+110.
	ZHANG Jie, LIN Jianyi. Effect of gear meshing spot adjustment on vehicle NVH of main reducer of MPV drive bridge [J]. *Modern Manuf Tech Equip*, 2017(06): 107-108+110. (in Chinese)
[4]	何渠, 贺敬良, 何畅然. 驱动桥主减速器动态特性分析[J]. 制造业自动化, 2015, 37(5):62-65.
	HE Qu, HE Jingliang, HE Changran. Analysis of dynamic characteristics of main reducer of drive bridge[J]. *Manuf Automation*, 2015, 37(5):62-65. (in Chinese)
[5]	宋怀兰, 王志清, 张飞, 等. 商用车后桥主减速器轴承预紧对NVH影响研究[J]. 上海汽车, 2018(10):5-8+14.
	SONG Huailan, WANG Zhiqing, ZHANG Fei, et al. Study on the influence of bearing pretightening on NVH of main Reducer of Commercial vehicle Rear Bridge [J]. *Shanghai Auto*, 2018(10):05-07. (in Chinese)
[6]	姚海明, 王会刚, 刘伟, 等 . 基于 ANSYS 主减速器壳应力及模态分析[J]. 机械设计与制造, 2010(3):135-137.
	YAO Haiming, WANG Huigang, LIU Wei, et al. Stress and modal analysis of main reducer shell based on ANSYS[J]. *Mach Des Manuf*, 2010(3):135-137. (in Chinese)
[7]	张晓帆, 饶东杰, 赵金涛. 基于ADAMS的微车主减速器振动分析[J]. 合肥工业大学学报, 2013, 36(2):129-132+170.
	ZHANG Xiaofan, RAO Dongjie, ZHAO Jintao. Vibration analysis of micro-owner reducer based on ADAMS[J]. *J Hefei Univ of Tech*, 2013, 36(2):129-132. (in Chinese)
[8]	殷国栋, 朱侗, 任祖平, 等. 基于多Agent的电动汽车底盘智能控制系统框架[J]. 中国机械工程, 2018, 29(15):1796-1801+1817.
	YIN Guodong, ZHU Dong, REN Zuping, et al. Intelligent control system framework of electric vehicle chassis based on multi-Agent[J]. *Chin Mech Engin*, 2018, 29(15):1796-1801+1817. (in Chinese)
[9]	黄志超, 王九州, 程梁. 扭力梁式后悬架模态与疲劳实验研究[J]. 噪声与振动控制, 2017, 37(6):115-119.
	HUANG Zhichao, WANG Jiuzhou, CHENG Liang. Experimental study on mode and fatigue of torsional beam rear suspension[J]. *Noise and Vibration Control*, 2017, 37(6):115-119. (in Chinese)
[10]	Choi B J, Yoon J H, Oh J E. A study on axle gear whine noise reduction with deflection test[J]. *Noise Vibration Bull, 2012, 226*(2):225-233.
[11]	钱汪焘. 汽车驱动后桥NVH分析及优化[D]. 长沙: 湖南大学, 2014.
	QIANG Wangtao. NVH analysis and optimization of automobile drive rear axlev[D]. Changsha: Hunan University, 2014. (in Chinese)
[12]	冯天培, 孙跃东, 王岩松, 等. 基于掩蔽效应的汽车非平稳车内噪声烦恼度评价方法[J]. 中国机械工程, 2017, 28(24):2919-2924+2930.
	FENG Tianpei, SUN Yuedong, WANG Yansong, et al. Evaluation method of noise annoyance in non-stationary vehicle based on masking effect[J]. *Chin Mech Engi*, 2017, 28(24):2919-2924+2930. (in Chinese)

材料	QT450-10
弹性模量,E	198 GPa
Poiison比	0.27
密度,ρ	7.3 kg·dm^-3

材料	QT450-10
弹性模量,E	198 GPa
Poiison比	0.27
密度,ρ	7.3 kg·dm^-3

阶数	f / kHz	振型说明
1	1.341	后端径向、二阶失圆
2	2.792	后端轴向、一阶变形
3	3.546	后端轴向、二阶变形
4	4.321	中间轴向、变形
5	4.821	后端径向、三阶失圆
6	5.377	整体弯曲

阶数	f / kHz	振型说明
1	1.341	后端径向、二阶失圆
2	2.792	后端轴向、一阶变形
3	3.546	后端轴向、二阶变形
4	4.321	中间轴向、变形
5	4.821	后端径向、三阶失圆
6	5.377	整体弯曲

阶数	f / kHz	振型
1	1.300	后端径向失圆
2	2.600	后端轴向变形
3	3.487	后端轴向变形
4	4.173	中间轴向变形
5	4.730	后端径向失圆
6	5.435	整体弯曲