机械与电子2017，Vol.35Issue(10)：16-20,5.
基于层次分析法的结构改进设计及强度分析
Structure Improvement Design and Strength Analysis Based on Analytic Hierarchy Process
摘要
Abstract
In order to solve the crack problem of the main landing gear of certain type of aircraft's key structure,the strength,stiffness,sensitivity and weight of the structure are studied,and the improved design scheme of the weak structure is proposed and verified.First,the strength modeling of the core structure of the main landing gear of the aircraft was simulated and calculated,and it was found that the weakest part of the structure was the location of the actual crack.Then,the sensitivity analysis method was adopted to analyze the sensitivity of each index and compare the design variables.Third,based on the analytic hierarchy process,the key indexes were selected to establish the optimization model,which was used to calculate the optimal improvement scheme.Finally,the structural strength was verified by modeling and simulation.The results,an increase of 1.41％ in the structure quality and a reduction of 43％ in the stress and strain,show that it is of obvious improvement in the stress concentration phenomenon and of good effect in the structure improvement.关键词
主起落架/改进设计/灵敏度分析/层次分析法/强度分析Key words
main landing gear/improve design/sensitivity analysis/analytic hierarchy process/strength analysis分类
机械制造引用本文复制引用
李静,张义浦,李伟,张显余..基于层次分析法的结构改进设计及强度分析[J].机械与电子,2017,35(10):16-20,5.基金项目
吉林省教育厅“十三五”科学技术项目(JJKH20170964KJ) （JJKH20170964KJ）
