|Table of Contents|

Structural optimizing of powertrain housing of off-road vehicle based on modal analysis

《南京理工大学学报》(自然科学版)[ISSN:1005-9830/CN:32-1397/N]

Issue:
2015年03期
Page:
358-
Research Field:
Publishing date:

Info

Title:
Structural optimizing of powertrain housing of off-road vehicle based on modal analysis
Author(s):
Wang Liangmo1Wang Wenyuan1Zhang Yijing2Chen Ronghua2 Yuan Liukai2Zhang Tangyun2
1.School of Mechanical Engineering,NUST,Nanjing 210094,China; 2.Nanjing Iveco Automobile Co.,Ltd.,Nanjing 210028,China
Keywords:
powertrain housing modal analysis resonance strain energy density ribs stiffness
PACS:
U461.91
DOI:
-
Abstract:
Aiming at the rupture of powertrain housing for an off-road vehicle because of the complex road conditions,changing loads and so on,the vibration mode of the powertrain is researched using the finite element modal analysis and modal experiments.The first order modal natural frequency and second order modal natural frequency of the powertrain are low and easy to form a resonance,the strain energy density of the housing is high and the amplitude at the connection of the transfer case housing is large,which cause the rupture of the powertrain housing.Ribs are added in the high strain energy density area of the transmission housing to improve the stiffness,connecting points are increased and ribs are added in the surrounding to reduce the amplitude.Simulation results show that the natural frequency of the optimized powertrain is improved,the strain energy density is reduced,the resonance frequency under the common engine speed is avoided,so that the rupture of the powertrain housing is prevented.

References:

[1] Hwang S J,Chen J S,Liu L,et al.Modeling and simulation of a powertrain-vehicle system with automatic transmission[J].International Journal of Vehicle Design,2000,23(1):145-160.
[2]郑伟娟,李元宝.应用振动ODS方法分析汽车动力总成振动[J].汽车技术,2007(9):31-33.
Zheng Weijuan,Li Yuanbao.Analysis on vibration of vehicle powertrain by using ODS method[J].Automobile Technology,2007(9):31-33.
[3]Yadav V,Londhe A V,Khandait S M.Correlation of test with CAE of dynamic strains on transmission housing for 4WD automotive powertrain[A].SAE 2010 World Congress & Exhibition[C].Detroit,Michigan,USA:SAE International,2010.
[4]孟浩东,李舜酩,白莹,等.柴油机动力总成异常振动试验分析[J].振动、测试与诊断,2011,31(6):675-678.
Meng Haodong,Li Shunming,Bai Ying,et al.Abnormal vibration analysis for power assembly of diesel engine[J].Journal of Vibration,Measurement & Diagnosis,2011,31(6):675-678.
[5]王亚楠,吕振华.商用车多刚体动力装置-悬置系统振动模态特性与系统匹配分析[J].中国机械工程,2011,22(18):2253-2258.
Wang Yanan,Lv Zhenhua.A study of vibrational modal characteristics of commercial vehicle multi-rigid-body powertrain with mounting systems[J].China Mechanical Engineering,2011,22(18):2253-2258.
[6]袁敏刚,陈晓峰,尹晓飞.基于模态分析的乘用车变速器壳体振动优化设计[J].机械工程与自动化,2012(6):80-82.
Yuan Mingang,Chen Xiaofeng,Yin Xiaofei.Optimum vibration design of transmission housing for passenger car by modal analysis[J].Mechanical Engineering & Automation,2012(6):80-82.
[7]王源隆,王良模,余有平,等.安装中央制动器的变速器后壳改进设计与仿真[J].机械传动,2012,36(2):42-45.
Wang Yuanlong,Wang Liangmo,Yu Youping,et al.Improved design and simulation of transmission rear case with central brake[J].Journal of Mechanical Transmission,2012,36(2):42-45.
[8]章骏.IVECO越野汽车动力传动系统动态特性的试验研究[D].南京:南京理工大学机械工程学院,2003.
[9]Ward H,Lammens S,Sas P.模态分析理论与试验[M].白化同,郭继忠,译.北京:北京理工大学出版社,2001.
[10]Xu Y,Zhan Z,Chen W,et al.Study about the relationship between power-train modal and connecting-plane[A].Proceedings of the FISITA 2012 World Automotive Congress[C].Berlin,Germany:Springer Berlin Heidelberg,2013:235-247.

Memo

Memo:
-
Last Update: 2015-06-30