OPTIMIZATION OF LANDING GEAR DOOR BASED ON RIGID-FLEXIBLECOUPLING DYNAMIC SIMULATION

doi:10.19936/j.cnki.2096-8000.20210628.007

Abstract

Abstract: The optimization design of a foam sandwich composite landing gear door was studied, a composite structure optimization method was proposed based on rigid-flexible coupling dynamic simulation. Rigid-flexible coupling model of composite landing gear door was established using C-B component mode synthesis method, and the dynamic responses of landing gear door was obtained. Orthotropic experimental method was used to select training samples, BP neural network response surfaces of ply parameters and dynamic responses of landing gear door were trained by training samples. The thicknesses of the composite ply were optimized by genetic algorithm to minimize the door mass and suspension joint load considering the deformation constraints. The results show that the proposed composite structure optimization method based on rigid-flexible coupling dynamic simulation can accurately consider the structural deformation and load in the whole motion process of landing gear door to achieve the optimal design of the composite landing gear door.

Key words: composites; structural optimization; landing gear; rigid-flexible coupling dynamic; neural network;genetic algorithm

CLC Number:

TB332

LIANG Li, JI Xiao-fei, MENG Zhao-kang, CHEN Xi-feng. OPTIMIZATION OF LANDING GEAR DOOR BASED ON RIGID-FLEXIBLECOUPLING DYNAMIC SIMULATION[J]. COMPOSITES SCIENCE AND ENGINEERING, 2021, 0(6): 45-51.

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