基于格子Boltzmann方法的起落架阻尼油孔参数研究

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振动与冲击 ›› 2023, Vol. 42 ›› Issue (2) : 182-188.

论文

甘盛勇1,2,3，魏小辉 1,2,3，房兴波1,2,3

作者信息 +

Analysis on the damping oil hole parameters of a landing gear based on lattice Boltzmann method

GAN Shengyong1,2,3,WEI Xiaohui1,2,3,FANG Xingbo1,2,3

Author information +

文章历史 +

摘要

为了分析起落架缓冲器油孔阻尼特性，采用格子Boltzmann方法分析油孔几何参数和工作环境参数对油液流动特性的影响，基于单参数分析结果和最小二乘法，建立并验证了阻尼力回归方程。结果表明：格子Boltzmann方法可以准确分析油孔阻尼性能。油孔长度会改变流动最小收缩截面在油孔中的位置，油孔直径在有限区间内的变化对缩流系数影响很小，后端压力增大会改善油孔流动质量。回归方程在设计区间内可以可靠的预测阻尼力大小，该方法可以被用于一般性的起落架缓冲器油孔设计中。

Abstract

In order to analyze the damping characteristics of the landing gear oil hole, the lattice Boltzmann method was used to analyze the influence of oil hole geometric parameters and operating environment parameters on the oil flow characteristics. Based on the single parameter analysis results and the least squares method, the damping force regression equation was established and verified. The results show that the lattice Boltzmann method can accurately analyze the oil hole damping performance. The oil hole length changes the position of the flow minimum contraction section in the oil hole, the variation of the oil hole diameter in a limited interval has little effect on the discharge coefficient, and the increase of the backpressure improves the oil hole flow quality. The regression equation can predict the damping force reliably in the design interval, and the method can be used in general landing gear oil hole design.

导出引用

甘盛勇1,2,3，魏小辉 1,2,3，房兴波1,2,3. 基于格子Boltzmann方法的起落架阻尼油孔参数研究[J]. 振动与冲击, 2023, 42(2): 182-188

GAN Shengyong1,2,3,WEI Xiaohui1,2,3,FANG Xingbo1,2,3. Analysis on the damping oil hole parameters of a landing gear based on lattice Boltzmann method[J]. Journal of Vibration and Shock, 2023, 42(2): 182-188

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