基于冲击能量的管簧式起落架优化设计  

Optimization design for the landing gear of the tube spring based on impact energy

作　　者：程成[1] 张华[1] 丘晓安 Cheng Cheng;Zhang Hua;Qiu Xiao'an(College of Aerospace Engineering,Chongqing University,Chongqing,400044,China)

机构地区：[1]重庆大学航空航天学院,重庆400044

出　　处：《机械设计与制造工程》2022年第4期49-53,共5页Machine Design and Manufacturing Engineering

基　　金：重庆市技术创新与应用发展专项重大主题专项(cstc2019jscx-zdztzxX0008)。

摘　　要：为提高管簧式起落架的着陆性能,通过分析管簧起落架受力情况,建立了作为起落架主支柱的变截面管簧在弯曲、扭转、轴向变形下的应变能吸收模型,并以某型通用飞机的起落架为优化对象,采用遗传算法对起落架管簧的形状进行优化。利用ABAQUS对优化前、后的起落架进行着陆仿真分析,结果表明:在相同的工况下,优化后起落架最大应力减小,过载系数减小,起落架吸收功量和比吸能得到提高,着陆性能得到改善。In order to improve the landing performance of the landing gear,the strain energy absorption model of the variable section tube spring under bending,torsion and axial deformation is established by the force analysis of the landing gear in this paper.And the genetic algorithm is used to optimize the shape of the landing gear of a certain general aircraft.At last,ABAQUS is used to simulate the landing gears.The results show that under the same conditions,the maximum stress and overload of the landing gear decrease,and the energy absorption and specific energy absorption of the landing gear increase.The cushion property of the landing gear is improved.

关 键 词：管簧式起落架 遗传算法 优化设计 ABAQUS 动力学仿真 

分 类 号：V226[航空宇航科学与技术—飞行器设计]