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Analysis and Verification of Fatigue Performance of Vehicle Closures
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Zhe Liu1, Hui Li1, Dawei Gao1, Yunkai Gao2
Automotive Engineering | 2024, 46(8) : 1529 - 1536
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Automotive Engineering | 2024, 46(8): 1529-1536
Analysis and Verification of Fatigue Performance of Vehicle Closures
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Zhe Liu1, Hui Li1, Dawei Gao1, Yunkai Gao2
Affiliations
  • 1. School of Mechanical Engineering，University of Shanghai for Science and Technology，Shanghai 　200093
  • 2. School of Automotive Studies，Tongji University，Shanghai 　201804
Published: 2024-08-25 doi: 10.19562/j.chinasae.qcgc.2024.08.019
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A study is conducted on the fatigue failure problem caused by the opening and closing of a car door. Firstly， the transient impact load under the door closing condition is discretized， and the vibration acceleration response signal and frequency response function are collected through the whole vehicle and bench tests respectively. Thus， the transfer path analysis （TPA） method is used to calculate the discretized transient impact load. Secondly， the obtained transient impact load is input into the finite element model of the door， and then the stress-time history response cloud diagram under the door closing condition is obtained， and the fatigue life under the door opening and closing condition is further calculated based on the fatigue damage theory. Finally， the fatigue analysis results based on load identification， the fatigue analysis results based on explicit dynamics and the fatigue test results under the door closed condition are compared and verified with each other. The conclusion shows that the three results are consistent， which has verified the rationality of the method.

vehicle door  /  transient response  /  fatigue durability  /  finite element method
Zhe Liu, Hui Li, Dawei Gao, Yunkai Gao. Analysis and Verification of Fatigue Performance of Vehicle Closures[J]. Automotive Engineering, 2024 , 46 (8) : 1529 -1536 . DOI: 10.19562/j.chinasae.qcgc.2024.08.019
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Year 2024 volume 46 Issue 8
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Article Info
doi: 10.19562/j.chinasae.qcgc.2024.08.019
  • Receive Date：2024-02-07
  • Online Date：2025-07-29
  • Published：2024-08-25
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History
  • Received：2024-02-07
  • Revised：2024-03-29
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Affiliations
    1. School of Mechanical Engineering，University of Shanghai for Science and Technology，Shanghai 　200093
    2. School of Automotive Studies，Tongji University，Shanghai 　201804
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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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