The invention discloses an axial compression test device for a typical structure stiffened plate of an airplane and a test method thereof, and belongs to the technical field of strength test of thin-wall stiffened structures. The device comprises a transverse knife edge fixing clamp, a transverse knife edge, a transverse plate, a stud and a base. The base and the transverse plate are used for clamping the loading end of the stiffened plate. The stud is fixedly connected with the base, and the testing machine transmits the load to the stiffened plate through the stud and the base. Considering the existence of a wing rib in an aircraft wing, a transverse knife edge is arranged to simulate the wing rib, and the wing rib is fixed with a transverse plate through a transverse knife edge fixing clamp. A displacement field and a strain field of the stiffened plate are obtained by applying a digital image correlation technology. The device is reasonable in structure and easy and convenient to install, and can meet the requirement that a load required by an axial compression test passes through a test piece centroid. By applying the DIC technology, the full-field mechanical behavior of the loaded test piece can be observed stereoscopically and visually, the traditional strain gauge pasting link is omitted, the test precision and efficiency are greatly improved, and the DIC technology has great significance in promoting the development of the modern optical measurement technology.
本发明公开了一种用于飞机典型结构加筋板轴压试验装置及其试验方法,属于薄壁加筋结构强度测试技术领域。装置包括横刀口固定夹、横刀口、横板、螺柱及底座。底座和横板实现对加筋板加载端的夹持。螺柱与底座固接,试验机通过螺柱和底座将载荷传递到加筋板。考虑了飞机机翼中翼肋的存在,设有横刀口来模拟翼肋,通过横刀口固定夹与横板固定。应用数字图像相关技术获得加筋板的位移场和应变场。本发明结构合理、安装简便,能够满足轴压试验所要求的载荷通过试件形心。DIC技术的应用可以立体直观地观察到受载试件全场的力学行为,省去了传统应变片粘贴环节,极大提高试验精度和效率,对促进现代光学测量技术的发展有重大意义。
Axial pressure test device and method for typical structure stiffened plate of airplane
一种用于飞机典型结构加筋板轴压试验装置及其试验方法
2021-04-30
Patent
Electronic Resource
Chinese
IPC: | G01N Untersuchen oder Analysieren von Stoffen durch Bestimmen ihrer chemischen oder physikalischen Eigenschaften , INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES / B64F GROUND OR AIRCRAFT-CARRIER-DECK INSTALLATIONS SPECIALLY ADAPTED FOR USE IN CONNECTION WITH AIRCRAFT , Boden- oder Flugzeugträgerdeckeinrichtungen besonders ausgebildet für die Verwendung in Verbindung mit Luftfahrzeugen / G01M TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES , Prüfen der statischen oder dynamischen Massenverteilung rotierender Teile von Maschinen oder Konstruktionen |
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