Structure Improvement and Experimental Validation of Aircraft Web Plate
WANG Lei1,, 2, LI He1, 2, XU Liang1, 2, HUI Li1, 2
1. Key Laboratory of Fundamental Science for Natural Defense of Aeronautical Digital Manufacturing Process, Shenyang Aerospace University, Shenyang 110136, China;
2. College of Electromechanical Engineering, Shenyang Aerospace University, Shenyang 110136, China
For fatigue failure occurring in a stiffener of an aircraft web plate earlier, the structure of the web plate is improved by means of simulation analysis and experimental validation. Firstly, the web plate dynamic model is set up, the causes of fatigue failure are analyzed by calculating the stress distribution and fatigue life of the web plate. Secondly, an improvement design is conducted on the original structure of the web plate based on principle of stiffness distribution. The finite element calculation result shows that improved design decreases the maximum stress of the stiffener and improves the fatigue life of the web plate. Finally, by comparing the fatigue tests of original structure and improved structure, the results verify the accuracy of finite element model and the effectiveness of the improvement.
2018, 
