• CN:11-2187/TH
  • ISSN:0577-6686

机械工程学报

• 汽车非线性动力学及其在复杂机电控制中的应用专栏 • 上一篇    下一篇

基于弯扭轴综合振动混合模型的汽车传动系复模态分析及仿真研究

栾文博1,  吴光强1, 2   

  1. 1. 同济大学汽车学院  上海  201804;
    2. 东京大学生产技术研究所  东京  153-8505  日本
  • 收稿日期:2014-12-16 修回日期:2015-02-13 出版日期:2015-11-15 发布日期:2015-11-15
  • 通讯作者: 吴光强,男,1965年出生,教授,博士研究生导师,东京大学生产技术研究所客员教授。主要研究方向为汽车先进设计与仿真理论及方法。 E-mail:wuguangqiang@tongji.edu.cn
  • 作者简介:栾文博,男,1985年出生,博士研究生。主要研究方向为汽车传动系振动噪声分析与优化。 E-mail:flashlwb_168@163.com
  • 基金资助:
    国家自然科学基金资助项目(51175379)

Complex Mode Analysis and Simulation Research of Automotive Driveline Based on Bending-torsional-axial Coupled Vibration Hybrid Model#br#

LUAN Wenbo1,  WU Guangqiang1, 2   

  1. 1. Automotive School, Tongji University, Shanghai 201804;
    2. Institute of Industrial Science, University of Tokyo, Tokyo 153-8505, Japan
  • Received:2014-12-16 Revised:2015-02-13 Online:2015-11-15 Published:2015-11-15

摘要: 基于系统动力学与结构动力学相结合的建模思想,介绍汽车传动系扭转、弯曲、轴向综合振动混合模型的建模特点,并从轴类部件的结构动力学建模、斜齿轮副、轴承和轴系附属质量(惯量)的系统动力学建模和基于坐标变换的部件间联接三个方面,对汽车传动系扭转、弯曲、轴向综合振动混合模型的建模方法进行探讨,在该模型的基础上对传动系进行复模态分析,发现混合模型计算的前4阶模态的主要振动形式为扭振,且与系统动力学分支扭振模型计算的前4阶结果相差不大,从第5阶模态之后都是两种或三种振动形式的耦合;以起步颤振为对象进行仿真研究,发现传动系混合模型的仿真结果较分支扭振模型在颤振程度上稍有增强且特征频率近似相等,说明弯曲和轴向振动对起步颤振现象影响不大。

关键词: 复模态分析, 混合模型, 起步颤振, 汽车传动系, 弯扭轴综合振动

Abstract: The characteristics of torsional-bending-axial coupled vibration hybrid model for automotive driveline are introduced based on the combination of system dynamics and structural dynamics and the modelling methods of hybrid model for automotive driveline are also discussed from three aspects which are structural dynamic modelling of shaft, system dynamic modelling of helical gear pair, bearing and attaching mass(inertia), connections among components by coordinate transformation. Complex mode analysis of driveline is analyzed and it is found that the main vibration mode of first four order modal calculated by hybrid model are torsional vibration and they are similar to the first four order modal calculated by system dynamic branched torsional vibration model, the main vibration modes are two or three forms of coupled vibration after the fifth order modal. It is discovered that the shudder degree of hybrid model is slightly enhanced and the characteristic frequency is almost the same between hybrid model and branched torsional model from the simulation research of launch shudder. It is also concluded that bending and axial vibrations have little effect on launch shudder phenomenon.

Key words: automotive driveline, bending-torsional-axial coupled vibration, complex mode analysis, hybrid model, launch shudde