一种适用于梁式机翼的变形重构方法

针对航空航天领域飞行器机翼结构实时变形监测的需求,研究了一种基于结构表面应变测量的变形重构方法。该方法采用应变传感系统测得结构表面应变,再通过Ko位移理论实现应变-位移转换,重构测点处的变形,从而为结构健康监测系统、控制系统以及故障预测提供参考,保证结构运行的安全性。首先以等强度梁为对象,对该方法进行了实验分析;进而采用梁式机翼结构,通过对翼梁结构有限元建模,对该方法展开研究。实验和有限元分析结果均验证了该方法在梁式机翼结构变形重构研究中的可行性和可靠性。

Shape Reconstruction Method of Spar Wing Structure

A shape reconstruction method is investigated for real-time condition assessment control and health monitoring of spar wing structures. In the method strain sensors are used to obtain strain measurements from the target structure and to reconstruct the corresponding displacement based on the Ko displacement theory.The method is examined through an experimental uniform strength beam model. Then a finite element model of wing spar is built to verify the shape reconstruction method. Both the results show the feasibility and reliability of the method.