JIANG Liangxing,NI Dacheng,YAO Chao,et al. Structural strength and life analysis of an electric drive axle shell based on the measured load spectrum[J]. Journal of Mechanical Strength,2025,47(2):10-18.
JIANG Liangxing,NI Dacheng,YAO Chao,et al. Structural strength and life analysis of an electric drive axle shell based on the measured load spectrum[J]. Journal of Mechanical Strength,2025,47(2):10-18. DOI: 10.16579/j.issn.1001.9669.2025.02.002.
STRUCTURAL STRENGTH AND LIFE ANALYSIS OF AN ELECTRIC DRIVE AXLE SHELL BASED ON THE MEASURED LOAD SPECTRUM
Accurately predicting the fatigue life of products plays an important role in the structural strength design and reliability design of key components of electric vehicles.Starting from the measured road load spectrum of the reinforced road
a method for data processing and analysis of measured load spectrum was proposed
based on the Miner criterion
the load data of the vehicle under no-load
half-load and full load were obtained
and the key data for vibration simulation analysis and indoor bench test were obtained through time-domain frequency domain processing and damage equivalent treatment.A parallel-shaft electric drive axle was designed and developed
the statics analysis and modal analysis were carried out for key components such as the bridge shell
and the results concluded that the bridge shell would not have torsion and bending caused by road surface excitation.Based on nCode DesignLife simulation analysis software
the fatigue life and damage value distribution of the bridge shell were obtained
and the accuracy of the simulation analysis was verified by the bridge shell durability test.Based on the measured road load spectrum of the reinforced road
a 15 000 km vehicle vibration test was carried out on the vehicle vibration test bench for the electric drive axle.The test shows that the overall life and reliability of the electric drive axle meet the design requirements
and the reliability of the analysis method is verified.
WANG Jianhua , HUANG Jianfei , JIN Di . Review on key technologies of electric drive axles [J]. Automobile Technology , 2021 ( 6 ): 33 - 40 . (In Chinese)
GAO D W , JIN Z H , ZHANG J Z , et al . Development and performance analysis of a hybrid fuel cell/battery bus with an axle integrated electric motor drive system [J]. International Journal of Hydrogen Energy , 2016 , 41 ( 2 ): 1161 - 1169 .
GAO Wei , LIU Gaopeng . Mechanical characteristics analysis of coaxial electric drive axle of electric vehicle [J]. Auto Industry Research , 2018 ( 8 ): 20 - 24 . (In Chinese)
ZHAN Rui , CHENG Huaguo , XU Kang , et al . Research of the test bench and method of integrated electric drive axle for light commercial vehicle [J]. Journal of Mechanical Transmission , 2020 , 44 ( 11 ): 157 - 161 . (In Chinese)
HUANG Jianfei , WANG Jianhua , JIN Di , et al . Research review of electric drive axle [J]. Journal of Mechanical Transmission , 2020 , 44 ( 11 ): 171 - 176 . (In Chinese)
ZHOU Chi , YANG Yanchao , WANG Tie , et al . Analysis of dump truck drive axle housing strength under combined conditions [J]. Automobile Technology , 2014 ( 8 ): 8 - 12 . (In Chinese)
ZHENG Huilin . Structural analysis and fatigue life prediction of mini-car drive axle based on finite element method [D]. Nanjing : Nanjing University of Science and Technology , 2008 : 1 . (In Chinese)
SHAO Y M , LIU J , MECHEFSKE C K . Drive axle housing failure analysis of a mining dump truck based on the load spectrum [J]. Engineering Failure Analysis , 2011 , 18 ( 3 ): 1049 - 1057 .
MI Chengji , GU Zhengqi , WU Wenguang , et al . Fatigue life analysis of rear axle housing of mining dump truck under random load [J]. Journal of Mechanical Engineering , 2012 , 48 ( 12 ): 103 - 109 . (In Chinese)
ZHU Maotao , XI Run , LI Wei . Fatigue life analysis of a light-duty vehicle’s rear axle housing [J]. Automobile Technology , 2009 ( 1 ): 34 - 37 . (In Chinese)
TOPAC M M , GU··NAL H , KURALAY N S . Fatigue failure prediction of a rear axle housing prototype by using finite element analysis [J]. Engineering Failure Analysis , 2009 , 16 ( 5 ): 1474 - 1482 .
JIN Xiangshu , ZHOU Xiaojun . Research of intensified test on fatigue property of automobile driving axle based on random load spectrum [J]. Journal of Machine Design , 2007 , 24 ( 12 ): 49 - 52 . (In Chinese)
GAO Jing , SONG Jian , ZHU Tao . Fatigue life prediction of vehicle’s driving axle house under random loading [J]. Journal of Mechanical Strength , 2008 , 30 ( 6 ): 982 - 987 . (In Chinese)
SONG Xiaofei , LIN Ronghui , LI Shuaichao , et al . Lightweight design of drive axle housing based on OptiStruct [J]. Journal of Mechanical Transmission , 2019 , 43 ( 4 ): 83 - 88 . (In Chinese)
LI Liang , SONG Jian , WEN Lingbo , et al . Finite element simulation and test for fatigue life of commercial vehicle driving axle housing [J]. Journal of Mechanical Strength , 2008 , 30 ( 3 ): 503 - 507 . (In Chinese)
SHI Guanglin , ZHU Lin , WANG Rugui . Fatigue life analysis for bridge of loader based on residual stress correction fatigue strength [J]. Journal of Machine Design , 2015 , 32 ( 10 ): 56 - 60 . (In Chinese)
ZOU Xihong , LING Long , CHEN Jing , et al . Research on durability test specifications of user-association drive axle test fields [J]. China Mechanical Engineering , 2022 , 33 ( 14 ): 1670 - 1679 . (In Chinese)