Aircraft landing gear mechanism design and safety analysis
Abstract：The landing gear system is the key components of aircraft, whose working performance directly affects the flying security and the performance of aircraft’s take off. Thus, it’s meaningful to study the retraction system. It is very significative in the project for reducing costs of aircraft research and development and improving the performance of the aircraft to analyze the kinematics and dynamics characteristics of aircraft landing gear retraction system by using simulation technology.
This paper took the landing gear system of A320 aircraft as the object to analyze the principle of function and retractable movement; Through the strength calculation of its components, error analysis, to determine the strength whether meet the requirements. Application CATIA established the A320 landing gear for kinematics analysis model based on put CATIA and LMS software, to A320 landing gear for targets dynamics simulation.
Keywords: landing gear, A320, retraction system, LMS, simulation analysis
目 錄
1 緒論……………………………………………………………1
1.1 起落架的概述…………………………………………………………1
1.2 飛機起落架的布置形式………………………………………………2
1.3 國內外研究現狀………………………………………………………5
1.4 本文研究的主要內容…………………………………………………7
2 飛機起落架的分布及收放系統設計…………………………7
2.1 起落架的收放…………………………………………………………7
2.1.1 主起落架的收放方式………………………………………………7
2.1.2 前后起落架的收放方式……………………………………………8
2.2 A320飛機起落架分析………………………………………………8
2.2.1 A320飛機起落架的概述……………………………………………8
2.2.2 A320飛機起落架的收放分析………………………………………11
2.3 小結…………………………………………………………………13
3 起落架零件組的強度計算……………………………………13
3.1飛機前起落架的材料屬性……………………………………………13
3.2飛機前起落架的整體約束和受力分析………………………………13
3.3 起落架的計算情況……………………………………………………15
3.4計算結果的分析與驗證………………………………………………16
3.4.1 理論計算驗證………………………………………………………16
4.運動模擬………………………………………………………24
4.1 A320起落架運動學仿真 ………………………………………………24
4.1.1 LMS Virtual.lab簡介………………………………………………24
4.2 A320起落架多體運動學仿真…………………………………………26
4.2.1.A320前起落架運動仿真……………………………………………26
4.2.2 A320主起落架運動仿真……………………………………………31
4.3小結……………………………………………………………………34
參考文獻…………………………………………………………35
致謝………………………………………………………………36
