Topology Optimization Of Adaptive Wing Compliant Mechanism

Adaptive wing is a trend of future aircraft development.At present,the main design methods include traditional mechanical design,intelligent material and intelligent structure,and flexible mechanism topology optimization.At present,the design of adaptive wing with flexible mechanism design method and traditional material is easy to realize in lightweight structure and engineering.This paper first introduces the topology optimization method of flexible mechanism,the solution of displacement sensitivity,the establishment of the optimization model of single input single output and single input multiple output,and discusses the effect of changing the stiffness of simulating spring on the displacement of output point.How to handle the processing method and program implementation when the design domain is an irregular rectangle.The SIMP interpolation method is used to optimize the wing flexible mechanism of the leading and tailing edge by using single material.The topology optimization model of leading and tailing edge compliant mechanism is developed respectively.The stucture is obtain by the developed MATLAB code respectively.The influence of the driving force position on the structure is discussed.The CATIA software is used to reconstruct the optimization results,and then the reconstructed model is imported into the HyperWorks software for simulation analysis.The results show that the compliant wing mechanism can achieve continuous deformation.Based on the leading edge structure design method,the design domain of the tailing edge is redefined and optimization model is established.Two different sets of weight factor values are chosen to optimize two different structures,the results of extraction and simulation analysis show that the tailing edge compliant wing mechanism meet the strength and design requirements.Alternating active phase algorithm is introduced for multiphase materials topology optimization.The method is proved by examples that is suitable for the design of flexible mechanism.Based on the alternating active phase algorithm,the volume ratio of every phase material is used as the constraint.A multi-phase materials topology optimization model of compliant mechanism is developed.OC optimization criteria method is used to solve the topology optimization problem.A distinct topology image of wing leading edge with two solid materials is obtained by the developed MATLAB code.The CATIA software is used to reconstruct the optimization results,and then the reconstructed model is imported into the HyperWorks software for simulation analysis.The results show that the multiphase compliant wing mechanism can achieve the maximum deflection of 9.1 degrees.