飞机起落架动力学建模及着陆随机响应分析
收稿日期: 2015-04-14
修回日期: 2015-09-28
网络出版日期: 2015-10-30
基金资助
国家自然科学基金(51275336,11572215);天津市应用基础与前沿技术研究计划(15JCZDJC32200)
Dynamic modeling of landing gear and its random response analysis
Received date: 2015-04-14
Revised date: 2015-09-28
Online published: 2015-10-30
Supported by
National Natural Science Foundation of China (51275336,11572215);Tianjin Research Program of Application Foundation and Advanced Technology (15JCZDJC32200)
吴卫国 , 孙建桥 , 冷永刚 , 贾腾 . 飞机起落架动力学建模及着陆随机响应分析[J]. 航空学报, 2016 , 37(4) : 1228 -1239 . DOI: 10.7527/S1000-6893.2015.0268
For the elastic structure characteristics of aircraft landing gear, a dynamic model is established. Meanwhile, the problem is analyzed with the discrete structure simplified response. The Hamilton's variation principle is used for putting forward the landing dynamic model containing the elastic structure. According to the dynamic model, the number of discrete structures of landing gear can be free to choose for solving the dynamics equation and analyzing the response. Taking the analysis of aircraft landing process as an example, with the use of random simulation, through the simulation of the aircraft landing sinking speed, initial displacement and runway unevenness, the random response characteristics of the aircraft are analyzed on the landing. The actual dynamic performance and the stress-strain characteristics of landing gear are determined, providing a basic reference for the optimization of structure parameters and fatigue analysis of landing gear.
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