FU Shushan,SUN Guangkai,HE Yanlin,CHU Daping. Simulation Study on Wing Skin Deformation Monitoring Based on Inverse Finite Element Method. Aeronautical Manufacturing Technology, 2022, 65(6): 107-114.
FU Shushan,SUN Guangkai,HE Yanlin,CHU Daping. Simulation Study on Wing Skin Deformation Monitoring Based on Inverse Finite Element Method. Aeronautical Manufacturing Technology, 2022, 65(6): 107-114. DOI: 10.16080/j.issn1671-833x.2022.06.107.
Aiming at the dynamic monitoring requirements of wing skin deformation
a skin deformation reconstruction method based on inverse finite element method and strain information was studied. Firstly
the three-node triangular element was used to discretize the structure
and the Kirchhoff plate and shell bending theory was used to construct the mechanical model. Then
the relationship between strain and displacement is deduced theoretically
the reconstruction algorithm is constructed
and a visualization software platform is developed to display the deformation of wing skin structure in real time. Finally
the airfoil skin structure and square skin structure are taken as the research objects
and the correctness and versatility of the reconstruction algorithm are verified by simulation analysi
s. The results show that the root mean square error of structural deformation reconstruction is 1.2% and the reconstruction time is less than 20ms when the density of strain measuring points is 2/m
2
. The deformation reconstruction method based on the inverse finite element method can be used in the deformation reconstruction of wing skin
which has a promising application in the field of aircraft structural deformation monitoring.