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Structural strength and life analysis of an electric drive axle shell based on the measured load spectrum
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Liangxing JIANG1, Dacheng NI1, 2, Chao YAO1, 2, Qing HUANG1, Xinhui QING3
Journal of Mechanical Strength | 2025, 47(2) : 10 - 18
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Journal of Mechanical Strength | 2025, 47(2): 10-18
• Fatigue∙Damage∙Fracture∙Failure Analysis •
Structural strength and life analysis of an electric drive axle shell based on the measured load spectrum
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Liangxing JIANG1, Dacheng NI1, 2, Chao YAO1, 2, Qing HUANG1, Xinhui QING3
Affiliations
  • 1.Hunan Lixing Power Technology Co., Ltd., Zhuzhou 412000, China
  • 2.College of Electrical and Information Engineering, Hunan University, Changsha 410082, China
  • 3.CRRC Electric Vehicle Co., Ltd., Zhuzhou 412000, China
Published: 2025-02-15 doi: 10.16579/j.issn.1001.9669.2025.02.002
Outline
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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.

Commercial vehicle  /  Electric drive axle  /  Road load spectrum  /  Fatigue life  /  Fatigue analysis
Liangxing JIANG, Dacheng NI, Chao YAO, Qing HUANG, Xinhui QING. 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
Funding
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  • National Key R&D Program Project(2021YFB2500700)
Appendix
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Year 2025 volume 47 Issue 2
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95
48
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Article Info
doi: 10.16579/j.issn.1001.9669.2025.02.002
  • Receive Date：2023-04-01
  • Online Date：2026-03-18
  • Published：2025-02-15
Article Data
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History
  • Received：2023-04-01
  • Revised：2023-08-04
Funding
National Key R&D Program Project(2021YFB2500700)
Affiliations
    1.Hunan Lixing Power Technology Co., Ltd., Zhuzhou 412000, China
    2.College of Electrical and Information Engineering, Hunan University, Changsha 410082, China
    3.CRRC Electric Vehicle Co., Ltd., Zhuzhou 412000, China

Corresponding:

JIANG Liangxing, E-mail：
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Citations
表12种不同金属材料的力学参数
科
Family		 属数
Number of
genus		 种数
Number of
species		 占总种数比例
Percentage of
total species (%)		 属
Genus		 种数
Number of
species		 占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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