噪声与振动控制2018，Vol.38Issue(1)：122-126,224,6.DOI:10.3969/j.issn.1006-1355.2018.01.024
整车动力传动系统弯曲模态实验识别及优化研究
Experiment Identification and Optimization of Vehicle's Powertrain Bending Modals
邓欣 1钟秤平 1陈清爽 1段龙杨 1翁建生 2刘淑英1
作者信息
- 1. 江铃汽车股份有限公司 江西省汽车噪声与振动重点实验室,南昌330001
- 2. 南京航空航天大学 能源与动力工程学院,南京210016
- 折叠
摘要
Abstract
The powertrain bending resonation is one of the important causes for the failure of the powertrain and driving system,and also causes high speed booming.The system restraint mode has an important influence on the natural frequencies and modal shapes.In this work,failure of the accessory bracket of a light truck powertrain traveling at a high speed is diagnosed by testing.It is confirmed that this failure is caused by powertrain bending resonance with engine's 2nd order excitation.Then,the influence of different powertrain constraints on the bending modals of the powertrain system is studied.The bending modal identification steps and methods in the real vehicle's operation state are established.Combined with CAE analysis,the optimal design of the driving shaft is carried out.As a result,the first order bending mode frequency is raised.The powertrain bracket fatigue failure is effectively avoided and the internal high speed booming is significantly reduced.关键词
振动与波/动力传动系统/弯曲模态/疲劳失效/高速轰鸣Key words
vibration and wave/powertrain/bending modal/fatigue failure/high speed booming分类
数理科学引用本文复制引用
邓欣,钟秤平,陈清爽,段龙杨,翁建生,刘淑英..整车动力传动系统弯曲模态实验识别及优化研究[J].噪声与振动控制,2018,38(1):122-126,224,6.
