• CN:11-2187/TH
  • ISSN:0577-6686

机械工程学报 ›› 2016, Vol. 52 ›› Issue (2): 134-143.doi: 10.3901/JME.2016.02.134

• 运载工程 • 上一篇    下一篇

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输入转矩对驱动桥系统动力学特性的影响

周驰1,  王琪1,  丁炜琦2,  桂良进1,  范子杰1   

  1. 1. 清华大学汽车安全与节能国家重点实验室  北京  100084;
    2. 陕西汉德车桥有限公司  西安  710201
  • 收稿日期:2015-06-25 修回日期:2015-12-23 出版日期:2016-01-15 发布日期:2016-01-15
  • 通讯作者: 范子杰,男,1958年出生,博士,教授,博士研究生导师。主要研究方向为汽车结构分析、优化设计及CAE方法。 E-mail:zjfan@tsinghua.edu.cn
  • 作者简介:周驰,男,1986年出生,博士研究生。主要研究方向为驱动桥系统动力学分析。 E-mail:zhou-c09@mails.tsinghua.edu.cn
  • 基金资助:
    校企合作(20142000237)和国家重点实验室重点(ZZ2013-014)资助项目

Dynamics of Drive Axle System with Effects of Input Torque

ZHOU Chi1,  WANG Qi1,  DING Weiqi2,  GUI Liangjin1,  FAN Zijie1   

  1. 1. State Key Laboratory of Automotive Safety and Energy, Tsinghua University, Beijing 100084;
    2. Shaanxi Hande Axle Co., Ltd., Xi’an 710201
  • Received:2015-06-25 Revised:2015-12-23 Online:2016-01-15 Published:2016-01-15

摘要: 在驱动桥系统中,滚子轴承是连接轴系与壳体的关键部件,其刚度具有各向耦合性和非线性特性,且与输入转矩有关。为准确高效地分析输入转矩对驱动桥系统动力学特性的影响,基于非线性轴承理论、有限元法和模态综合方法,建立包含主减速器总成、差速器总成、轮毂总成和桥壳等部件的完整驱动桥系统动力学分析模型,根据输入转矩大小的不同,定义轻载、中载和重载三种典型工况,分别计算各工况下的非线性轴承刚度,分析轴承刚度随输入转矩大小变化的特点,对驱动桥系统进行单位谐波传动误差激励下的动力学分析,研究输入转矩对驱动桥系统动力学特性的影响,分析不同工况下准双曲面齿轮动态啮合力的频响特性。计算结果表明,驱动桥系统动力学特性随输入转矩大小变化具有一定规律,能有效指导驱动桥系统的减振降噪设计,避开危险工况。

关键词: 动力学分析, 非线性刚度, 滚子轴承, 驱动桥, 输入转矩

Abstract: Driveline and housings are connected by roller bearings. The bearing stiffness is nonlinear and coupling in all directions and changes with the input torque of drive axle, which leads to variation in the drive axle system dynamics. Based on the nonlinear bearing theory, the finite element method and modal synthesis method, a drive axle final drive gear transmission system dynamic model with final drive gear transmission assembly, differential gear transmission assembly, hub assembly and housings etc. is built. According to the magnitude of the input torque of the pinion shaft, the load cases are set out into light load, medium load and heavy load. Nonlinear bearing stiffness is calculated corresponding to each load case. The axial stiffness and radial stiffness of final drive roller bearing with load change characteristics are analyzed. Dynamic analysis of the whole drive axle system to a unit harmonic transmission error at the hypoid gear mesh is performed in the case of different input torques. The influence of the input torque on the drive axle is researched. The frequency response characteristics of final drive hypoid gear dynamic meshing force is analyzed when the drive axle system works in different load cases. The results show that the drive axle system dynamics change with the size of the input torque with a certain regularity, and can guide the design of the vibration and noise reduction of drive axle system in order to avoid dangerous conditions effectively.

Key words: drive axle, dynamic analysis, input torque, nonlinear stiffness, roller bearing

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