本文選題：道路工程 + 整機平整度指數(shù)　； 參考：《南京航空航天大學學報》2016年04期

【摘要】：從三自由度飛機模型出發(fā),提出了新的機場道面平整度評價理論,以不同平整度等級的3條測線的道面高程作為輸入,在Matlab/Simulink環(huán)境中對飛機的三自由度振動方程進行求解,得到飛機機身的3個振動響應量:縱向俯仰角φ、橫向滾轉角θ及質心處豎向位移。在此基礎上計算出道面整機平整度指數(shù)(Full aircraft roughness index,FARI)沿跑道縱向的分布曲線;同時計算出相同道面的國際平整度指數(shù)(International roughness index,IRI)。分別將FARI,IRI與在相應道面上滑行的飛機加權加速度均方根值進行了相關性分析,相關系數(shù)分別為0.980 6和0.886 9。結果表明整機平整度指數(shù)FARI更能夠客觀反應飛機所有機輪覆蓋范圍內道面起伏情況對飛機滑行過程中顛簸量的影響效果,更適合于機場道面平整度的評價。
[Abstract]:Based on the three-degree-of-freedom aircraft model, a new evaluation theory of airport pavement smoothness is proposed. The plane vibration equation of three degrees of freedom is solved in Matlab/Simulink environment by taking the elevation of three measured lines with different degree of smoothness as input. Three vibration responses of the aircraft fuselage are obtained: longitudinal pitch angle 蠁, transverse roll angle 胃 and vertical displacement at the center of mass. On this basis, the longitudinal distribution curve of the full aircraft roughness index Fari along the runway is calculated, and the international smoothness index of the same pavement is calculated. The correlation between Fari IRI and the root-mean-square (RMS) values of weighted acceleration of aircraft taxiing on the corresponding plane is analyzed, the correlation coefficients are 0.980 6 and 0.886 9, respectively. The results show that the overall smoothness index (FARI) can objectively reflect the effect of the surface fluctuation on the turbulence during the aircraft taxiing, and is more suitable for the evaluation of the airport pavement smoothness.
【作者單位】： 中國民航大學機場學院;
【分類號】：V351.11
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本文編號：1902866