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Random response and reliability analysis of aircraft landing gear under uneven runway excitation
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Ying ZHANG1, Zheng-rong JIN1, Wan-tao JIA1, Xiao-chuan LIU2, Yong XU1
Journal of Vibration Engineering | 2024, 37(3) : 497 - 504
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Journal of Vibration Engineering | 2024, 37(3): 497-504
Random response and reliability analysis of aircraft landing gear under uneven runway excitation
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Ying ZHANG1, Zheng-rong JIN1, Wan-tao JIA1, Xiao-chuan LIU2, Yong XU1
Affiliations
  • 1School of Mathematics and Statistics, Northwestern Polytechnical University, Xi'an 710129, China
  • 2Aircraft Strength Research Institute of China, Xi'an 710065, China
Published: 2024-03-28 doi: 10.16385/j.cnki.issn.1004-4523.2024.03.014
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A nonlinear two-degree-of-freedom system is used to construct an aircraft landing gear model. The stochastic excitation of the uneven runway to the system is described by time-domain noise，and the road roughness coefficient is used to describe the roughness of runway. Based on the probability density function and the statistics of system response，the influence of uneven runway on aircraft landing gear system is investigated. The reliability of the landing gear model and the passenger comfort under different road roughness coefficients are analyzed by establishing the relationship between the safety zones，comfort zones and the system response. The results show that the larger the road roughness coefficient is，the more fluctuation of the system state variable will be. The reliability and comfort of the system are negatively correlated with the road roughness coefficient. In addition，when the road roughness coefficient is small，the mean first-passage time and comfort of the system are more significantly affected by random disturbance. The present paper provides a theoretical basis for aircraft riding comfort and landing gear development and design.

landing gear  /  random response  /  reliability  /  unevenness of the runway
Ying ZHANG, Zheng-rong JIN, Wan-tao JIA, Xiao-chuan LIU, Yong XU. Random response and reliability analysis of aircraft landing gear under uneven runway excitation[J]. Journal of Vibration Engineering, 2024 , 37 (3) : 497 -504 . DOI: 10.16385/j.cnki.issn.1004-4523.2024.03.014
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Article Info
doi: 10.16385/j.cnki.issn.1004-4523.2024.03.014
  • Receive Date：2022-08-14
  • Online Date：2026-02-10
  • Published：2024-03-28
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  • Received：2022-08-14
  • Revised：2023-01-05
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Affiliations
    1School of Mathematics and Statistics, Northwestern Polytechnical University, Xi'an 710129, China
    2Aircraft Strength Research Institute of China, Xi'an 710065, China
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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
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Percentage of
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Genus		 种数
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Percentage of total
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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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