Vibration analysis and vibration reduction optimization of dual-wheel strut landing gear brake

JIANG Wei1,2,ZHANG Ming1,2,HU Xiaohang1,2,ZHU Xin1,2,TANG Liming1,2

Journal of Vibration and Shock ›› 2024, Vol. 43 ›› Issue (5) : 328-337.

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PDF(3176 KB)
Journal of Vibration and Shock ›› 2024, Vol. 43 ›› Issue (5) : 328-337.

Vibration analysis and vibration reduction optimization of dual-wheel strut landing gear brake

  • JIANG Wei1,2,ZHANG Ming1,2,HU Xiaohang1,2,ZHU Xin1,2,TANG Liming1,2
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Abstract

In this paper, a two-wheel strut landing gear was taken as the research object to study the low-frequency vibration induced by aircraft brakes. Firstly, a complete six-degree-of-freedom mathematical model of aircraft landing brake skid was established, and the model was built in Simulnk to analyze the influence of some parameters of brake con-trol law on chattering. Secondly, the Rms value of the center course acceleration of the axle was taken as the vibra-tion quantization index, and the combination coefficient efficiency was set as the optimization objective. The multi-objective optimization design of the hydraulic brake control system parameters was carried out based on the NSGA-Ⅱ algorithm, and the optimal solution of the Parato optimal front surface and the TOPSIS compromise of the optimi-zation variables was obtained. Finally, the vibration responses of axle center before and after optimization were compared according to the optimized design scheme, and the adaptability of the optimized scheme to different land-ing environments was tested by setting several groups of simulation conditions. The results show that the maximum reduction of the landing gear axle center acceleration Rms value after optimization can reach 14.53%, and the max-imum increase of the binding coefficient efficiency is 3.65%, which indicates that the proposed landing gear vibra-tion reduction optimization design method has good feasibility.

Key words

Aircraft brake system / Landing gear buffeting / Multi-objective genetic optimization / Mathematical model / Brake in-duced vibration

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JIANG Wei1,2,ZHANG Ming1,2,HU Xiaohang1,2,ZHU Xin1,2,TANG Liming1,2. Vibration analysis and vibration reduction optimization of dual-wheel strut landing gear brake[J]. Journal of Vibration and Shock, 2024, 43(5): 328-337

References

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