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 录
1 绪论……………………………………………………………1
1.1 起落架的概述…………………………………………………………1
1.2 飞机起落架的布置形式………………………………………………2
1.3 国内外研究现状………………………………………………………5
1.4 本文研究的主要内容…………………………………………………7
2 飞机起落架的分布及收放系统设计…………………………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飞机起落架分析………………………………………………8
2.2.1 A320飞机起落架的概述……………………………………………8
2.2.2 A320飞机起落架的收放分析………………………………………11
2.3 小结…………………………………………………………………13
3 起落架零件组的强度计算……………………………………13
3.1飞机前起落架的材料属性……………………………………………13
3.2飞机前起落架的整体约束和受力分析………………………………13
3.3 起落架的计算情况……………………………………………………15
3.4计算结果的分析与验证………………………………………………16
3.4.1 理论计算验证………………………………………………………16
4.运动模拟………………………………………………………24
4.1 A320起落架运动学仿真 ………………………………………………24
4.1.1 LMS Virtual.lab简介………………………………………………24
4.2 A320起落架多体运动学仿真…………………………………………26
4.2.1.A320前起落架运动仿真……………………………………………26
4.2.2 A320主起落架运动仿真……………………………………………31
4.3小结……………………………………………………………………34
参考文献…………………………………………………………35
致谢………………………………………………………………36
