计及间隙和摩擦非线性的汽车传动系统瞬态振动冲击研究

doi:10.3901/JME.2021.10.050

机械工程学报 ›› 2021, Vol. 57 ›› Issue (10): 50-64.doi: 10.3901/JME.2021.10.050

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计及间隙和摩擦非线性的汽车传动系统瞬态振动冲击研究

杨亮^1,2,3, 夏元烽^1,2,3, 庞剑^1,2,3, 褚志刚^1,2

1. 重庆大学汽车工程学院重庆 400044;
2. 汽车振动噪声和安全技术国家重点实验室重庆 401133;
3. 重庆长安汽车工程研究院重庆 401133

收稿日期:2020-06-04 修回日期:2020-12-26 出版日期:2021-07-23 发布日期:2021-07-23
通讯作者: 褚志刚(通信作者),男,1978年出生,博士,教授,博士研究生导师。主要研究方向为汽车振动噪声分析与控制技术。E-mail:zgchu@cqu.edu.cn
作者简介:杨亮,男,1981年出生,博士研究生。主要研究方向为汽车噪声振动分析与控制技术。E-mail:yangliang2@changan.com.cn;夏元烽,男,1983年出生,博士研究生。主要研究方向为汽车噪声振动分析与控制技术。E-mail:20153289001@cqu.edu.cn;庞剑,男,1963年出生,博士,教授,博士研究生导师。主要研究方向为汽车振动噪声分析与控制技术。E-mail:pangjian@changan.com.cn
基金资助:
国家自然科学基金资助项目（51875060）。

Investigation on Transient Vibro-impacts of Vehicle Driveline Based on Clearance and Friction Nonlinearity

Yang Liang^1,2,3, Xia Yuanfeng^1,2,3, Pang Jian^1,2,3, Chu Zhigang^1,2

1. College of Automotive Engineering, Chongqing University, Chongqing 400044;
2. State Key Laboratory of Vehicle NVH and Safety Technology, Chongqing 401133;
3. ChangAn Auto Global R&D Centre, Chongqing 401133

Received:2020-06-04 Revised:2020-12-26 Online:2021-07-23 Published:2021-07-23

摘要/Abstract

摘要： 由于汽车传动链存在间隙，在离合快速接合过程中，轮齿之间的瞬态冲击容易产生严重的振动噪声问题，降低了整车声品质。为了分析由离合快速接合引起的传动系统瞬态振动冲击，针对后驱车传动系统，基于间隙和摩擦非线性理论，建立了包含分段线性的间隙单元和非线性摩擦单元的9自由度集中参数动力学模型。数值模拟了离合器在快速结合过程中，传动链产生的瞬态振动冲击现象。平面相位图揭示了在每次瞬态冲击时，齿轮间隙单元内的多次碰撞反弹现象，并且剖析了轮齿相对接触位移和相对运动速度之间的关系。和驱动桥间隙单元相比，变速器间隙单元产生的瞬态冲击力和弹性势能最大。在飞轮和离合器转速同步过程中，分析不同正压力条件下飞轮和离合器从动盘之间的摩擦转矩和摩擦Stick-Slip现象。和广泛使用的Karnoop摩擦模型相比，在离合器接合过程中，所建立的数值摩擦模型更好地仿真飞轮和离合器从动盘之间的摩擦转矩变化和摩擦同步产生的传动链瞬态振动冲击。上述数值分析结果得到了整车试验验证。

关键词: 间隙非线性, 摩擦非线性, 传动系统, 振动冲击, 离合接合

Abstract: Due to gear clearances of automotive driveline, transient vibro-impacts between gear teeth easily cause serious noise and vibration problem during fast engagement clutch, which decrease the vehicle sound quality. To analyze the transient vibro-impacts of driveline system excited by fast engagement of the clutch, a 9 degree-of-freedom lumped parameter dynamical model with piecewise linear clearance elements and nonlinear friction element for a rear-wheel-drive vehicle driveline system is established based on nonlinear theory of clearance and friction. The transient vibro-impact phenomena of the vehicle driveline excited by fast engagement of the clutch are numerically simulated. The plane phase reveals the phenomenon of multiple impacts and rebounds of the gear teeth in each transient impact, and shows the relationship between the relative contact deformation of the gear teeth and the relative angular velocity. Compared to axle clearance element, the transmission clearance element produces the largest transient impact force and elastic potential energy. During speed synchronization of the flywheel and clutch, the friction torque and Stick-Slip phenomenon between flywheel and clutch plate with different normal force are analyzed. Compared to the widely used friction model based on Karnoop friction theory, the numerical friction model established in this paper can better simulate the driveline vibro-impact caused by speed synchronization and the friction torque between flywheel and clutch plate during clutch engagement. The numerical results are verified by the vehicle tests.

Key words: clearance nonlinearity, friction nonlinearity, driveline system, vibro-impact, clutch engagement

中图分类号:

TG156

杨亮, 夏元烽, 庞剑, 褚志刚. 计及间隙和摩擦非线性的汽车传动系统瞬态振动冲击研究[J]. 机械工程学报, 2021, 57(10): 50-64.

Yang Liang, Xia Yuanfeng, Pang Jian, Chu Zhigang. Investigation on Transient Vibro-impacts of Vehicle Driveline Based on Clearance and Friction Nonlinearity[J]. Journal of Mechanical Engineering, 2021, 57(10): 50-64.

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计及间隙和摩擦非线性的汽车传动系统瞬态振动冲击研究

Investigation on Transient Vibro-impacts of Vehicle Driveline Based on Clearance and Friction Nonlinearity

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