摘要
对于机场道面的平整性,目前国内外相关标准仅做了一般性规定,而未根据不同部位的重要性加以区分;实际上相同的不平整程度在飞机的不同滑行状态下导致的颠簸效果有很大的差别。针对这一问题,采用飞机整机模型建立飞机-道面振动方程,基于该振动方程构建了不均匀变形道面的Simulink仿真评价系统;以飞机竖向加速度0.4g作为评价标准,利用上述仿真评价系统求解在不同平整程度道面上的振动响应,选取飞机滑行时的三个代表速度分别为0.2v_0、0.5v_0和0.8v_0。分析结果表明:0.2v_0、0.5v_0和0.8v_0三种代表速度在3 m最不利波长条件下,其最大允许变形波幅分别为0.05 m、0.027 m和0.023 m;该结论可以为分析道面不同部位平整程度提供重要依据。
For the airport pavement smoothness, the related standards at home and abroad only give a general provision, but do not distinguish different importances of different parts. In fact, the same pavement roughness level can cause quite different bumpiness effects under different plane taxiing states. To solve this problem, the whole aircraft model was used to establish the aircraft-road surface vibration equation. Based on this equation, the uneven deformation pavement simulink simulation evaluation system was constructed. Then, the plane vertical acceleration of 0.4 g was taken as the evaluation standard, the above simulation evaluation system was employed to solve the vibration responses of road surfaces with different flatness levels. Three representative speeds during planes taxiing were chosen, they were 0.2v0, 0.5v0and 0.8v0. The analysis results showed that three representative speeds under the most unfarorable wave length condition of 3 m lead to, the pavement's maximum allowable deformation amplitudes to be 0.05 m, 0.027 m and 0.023 m, respectively. This conclusion provided an important basis for the flatness analysis of airportpavement's different parts. © 2017, Editorial Office of Journal of Vibration and Shock. All right reserved.
出处
《振动与冲击》
EI
CSCD
北大核心
2017年第9期166-171,共6页
Journal of Vibration and Shock
