本文選題：道路工程 + 整機(jī)平整度指數(shù)��； 參考：《南京航空航天大學(xué)學(xué)報(bào)》2016年04期

【摘要】：從三自由度飛機(jī)模型出發(fā),提出了新的機(jī)場道面平整度評價(jià)理論,以不同平整度等級(jí)的3條測線的道面高程作為輸入,在Matlab/Simulink環(huán)境中對飛機(jī)的三自由度振動(dòng)方程進(jìn)行求解,得到飛機(jī)機(jī)身的3個(gè)振動(dòng)響應(yīng)量:縱向俯仰角φ、橫向滾轉(zhuǎn)角θ及質(zhì)心處豎向位移。在此基礎(chǔ)上計(jì)算出道面整機(jī)平整度指數(shù)(Full aircraft roughness index,FARI)沿跑道縱向的分布曲線;同時(shí)計(jì)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(yīng)道面上滑行的飛機(jī)加權(quán)加速度均方根值進(jìn)行了相關(guān)性分析,相關(guān)系數(shù)分別為0.980 6和0.886 9。結(jié)果表明整機(jī)平整度指數(shù)FARI更能夠客觀反應(yīng)飛機(jī)所有機(jī)輪覆蓋范圍內(nèi)道面起伏情況對飛機(jī)滑行過程中顛簸量的影響效果,更適合于機(jī)場道面平整度的評價(jià)。
[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(xué)機(jī)場學(xué)院;
【分類號(hào)】：V351.11
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本文編號(hào)：1902866