基于三节点逆元法与光纤传感器的机翼形态重构方法OA

The shape reconstruction technology of aircraft wing structure based on strain information can provide data support for the aerodynamic shape,aeroelastic characteristics and stealth performance control of'bionic wing'.In order to realize the deformation monitoring of aircraft wings,this paper proposes a morphological reconstruction method based on three-node inverse finite element method and strain information acquisition,and gives the corresponding layout form of optical frequency domain reflective(OFDR)distributed optical fiber sensor.Firstly,a simplified model of aircraft wing is constructed,and the simulation verification of morphological reconstruction method based on finite element analysis results is carried out.Secondly,an experimental system for strain monitoring and shape reconstruction of simplified wing model based on distributed optical fiber sensor is constructed.The results show that the average relative error of the shape reconstruction of the simplified wing model is about 4.01%under the natural droop condition.Under the combined bending and torsion conditions,the average relative error of the shape reconstruction of the simplified wing model is about 6.34%.Therefore,the method proposed in this paper is suitable for aircraft wing deformation monitoring under different load conditions,which can provide help for morphing wing shape control and airborne conformal antenna phase compensation.