基于应变监测的升降舵壁板变形重构方法

针对航空航天领域飞机升降舵装配过程中的实时变形监测问题,研究了一种基于应变监测的构件变形重构方法。理论分析了构件表面应变与位移变形之间的关系,建立了变形重构方程;通过最小应变误差优化函数得到更加精确的结构端部应变,提高了重构方程的重构精度;实验以模拟升降舵壁板的板形零件为被测构件,通过有限元分析建模,验证了变形重构技术的可行性。研究结果表明:在不同工况下,构件整体重构误差低于5.6%,90%以上的重构点的重构误差低于4%。基于应变监测的变形重构方法在对航空构件的实时变形监测中具有良好的应用前景。

Deformation Reconstruction Method of Elevator Assembly Based on Strain Monitoring

Aiming at the problem of real-time deformation monitoring during the assembly process of aircraft elevators in the aerospace field, a method of component deformation reconstruction based on strain monitoring was studied. The relationship between component surface strain and displacement deformation is theoretically analyzed, and the deformation reconstruction equation is established. The minimum strain error optimization function is used to obtain more accurate end strain, which improves the reconstruction accuracy of the reconstruction equation. The experiment uses the plate-shaped part that simulates the elevator wall plate as the tested component, and through finite element analysis, the feasibility of deformation reconstruction technology is verified. The research results show that under different operating conditions, the overall reconstruction error of the component is less than 5.6%, and the reconstruction error of more than 90% of the reconstruction points is less than 4%. The deformation reconstruction method based on strain monitoring has a good application prospect in real-time deformation monitoring of aviation components.