自平衡框架在疲劳试验中的研究与应用  

Research and Application of Self-Balance Loading Frame in Fatigue Test

作　　者：吕程[1] 王刚[1] 杜星[1] 夏峰[1] LV Cheng;WANG Gang;DU Xing;XIA Feng(Aviation Technology Key Laboratory of Full Scale Aircraft Structure Static and Fatigue Test,Aircraft Strength Research Institute of China,Xi′an 710065,Shaanxi,China)

机构地区：[1]中国飞机强度研究所,全尺寸飞机结构静力/疲劳航空科技重点实验室,陕西西安710065

出　　处：《工程与试验》2024年第4期65-68,共4页Engineering and Test

摘　　要：在以往的全机静力/疲劳试验中,通常采用立柱龙门架或者一体化加载框架来施加载荷,这两种加载方式均需借助地轨形成盒式结构。对于某民机后机身疲劳试验,试验区域无地轨、无顶棚,对加载提出了较大挑战。为解决试验件的支持及垂向、航向、侧向载荷施加等难题,在疲劳/静力试验加载框架研究的基础上,进一步发展了试验加载框架设计技术,提出了一体化自平衡整体加载框架设计方案,并进行了仿真与试验验证。试验结果表明,该加载方式可行有效,在后续全机和部件的静力/疲劳试验中有较大应用前景。In the previous static and fatigue tests,the column gantry loading frame and integrated loading frame are usually adopted to apply the loadings.Both of these loading methods need to form a box structure with the help of the ground rail.For the fatigue test of the rear fuselage of a civil aircraft,there is no ground rail and ceiling in the test area,which brings a big challenge to the loading.In order to solve the problems about supporting the test piece and applying vertical,directional and lateral loading,based on the research of the previous fatigue and static test loading frame,the design technology of integrated loading frame is further developed.The design scheme of integrated self-balance loading frame is proposed,and the simulation and test verification are carried out.The test results show that the loading method is feasible and effective,and has great application prospects in the subsequent static and fatigue tests of the full scale aircraft and components.

关 键 词：疲劳试验 自平衡 加载框架 有限元分析 

分 类 号：V216[航空宇航科学与技术—航空宇航推进理论与工程]