基于有限元法的机翼安全性评价的研究

运用有限元方法及大型有限元软件包Ansys，提出利用三个指标定量评价机翼的安全性，即应力位移的条件、关键点的安全系数、机翼载荷失效过程稳定安全度。并通过空客A320实例验证这种做法的有效性。计算结果表明，机翼总体上满足安全稳定要求，机翼发生失效的最危险的部位是机翼的根部，在循环疲劳载荷作用下，应注意机翼的根部及机翼的关键点上。

A research on safety evaluation of the wing based on the FEM

In order to evaluate the safety of wing structure,this paper proposes a safety quantitative method of three indexes: stress-displacement conditions,the safety factors of key points and the stability of the wing load in the failure process,based on the FEM and ANSYS and proves its validity with Airbus A320 series.Results show that the wings meet the requirements of security and stability.The most probable failure part is the wing root.The roots and key points of the wing should be focused on under the cyclic...