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Nose Landing Gear Stability Enhancement and Shimmy Suppression with a Nonlinear Energy Sink
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Jiacai Zhou, Yanying Zhao**, Xiangzhi Xiao, Yian Liu, Longhua Zhou
Chinese Journal of Solid Mechanics | 2024, 45(6) : 759 - 775
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Chinese Journal of Solid Mechanics | 2024, 45(6): 759-775
• Research Paper •
Nose Landing Gear Stability Enhancement and Shimmy Suppression with a Nonlinear Energy Sink
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Jiacai Zhou, Yanying Zhao**, Xiangzhi Xiao, Yian Liu, Longhua Zhou
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  • Nanchang Hangkong University, Nanchang, 330063
Published: 2024-12-25 doi: 10.19636/j.cnki.cjsm42-1250/o3.2024.031
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Aircraft ground handling is significantly impacted by shimmy, which reduces landing gear lifespan and increases accident rates. This study employs a nonlinear energy sink (NES) to mitigate landing gear shimmy. Focusing on the landing gear of a light aircraft, a dynamic model incorporating an NES device is developed. First, the NES device's impact on the stability region and amplitude of landing gear shimmy is analyzed, demonstrating its effectiveness in mitigating shimmy. Beside, the study examines how parameters such as nonlinear stiffness, linear stiffness, mass, damping coefficient, and vertical distance from the NES device to the landing gear's S-axis influence damping. Furthermore, under specified optimization goals, suitable parameter ranges are selected and a genetic algorithm is employed for global optimization. Finally, the reliability of the optimized results is confirmed through time-domain analysis. This research indicates that NES devices can enhance landing gear anti-shimmy performance, offering significant practical value.

landing gear  /  shimmy  /  nonlinear energy sink  /  optimized design
Jiacai Zhou, Yanying Zhao, Xiangzhi Xiao, Yian Liu, Longhua Zhou. Nose Landing Gear Stability Enhancement and Shimmy Suppression with a Nonlinear Energy Sink[J]. Chinese Journal of Solid Mechanics, 2024 , 45 (6) : 759 -775 . DOI: 10.19636/j.cnki.cjsm42-1250/o3.2024.031
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Year 2024 volume 45 Issue 6
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doi: 10.19636/j.cnki.cjsm42-1250/o3.2024.031
  • Receive Date：2024-07-10
  • Online Date：2026-04-01
  • Published：2024-12-25
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  • Received：2024-07-10
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    Nanchang Hangkong University, Nanchang, 330063
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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
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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