Method and system for optimizing the layout of thin film structure reinforcement strips based on genetic algorithm

Abstract

The invention discloses a genetic algorithm-based method and system for optimizing the layout of a thin film structure reinforcing belt, belonging to the technical field of thin film structures. The layout optimization method includes the following steps: S1, setting the design parameters of the reinforcement band, and constructing the layout optimization parameters; S2, setting the parameters of the genetic algorithm, and initializing the population; S3, decoding the population to obtain the layout optimization parameters of the reinforcement band, and establishing The nonlinear finite element model is solved at the same time; S4, calculate the objective function based on the solution result; S5, use the objective function to calculate the fitness, and judge whether the stopping criterion is satisfied; S6, if the stopping criterion is not satisfied, the population is selected, crossed , Mutation operation, repeating steps S3-S5; S7, if the stop criterion is met, end the loop and output the optimal individual. The invention optimizes the layout of the reinforcement strips of the membrane structure through the genetic algorithm, which can effectively avoid the occurrence of wrinkles of the membrane structure and improve the performance of the membrane structure.

Description

technical field [0001] The invention relates to the technical field of thin film structures, in particular to a genetic algorithm-based method and system for optimizing the layout of reinforcement strips of thin film structures. Background technique [0002] Thin-film structures are characterized by light weight and easy folding and storage, and are widely used in spacecraft structures, such as solar sails and thin-film antenna arrays. However, the thickness of the thin film structure is small, the bending stiffness is small, and it is prone to wrinkle deformation under the action of pressure load. The existence of wrinkles may affect the static and dynamic characteristics of the thin film structure, and then affect the performance of the spacecraft. Usually in engineering design, it is necessary to set a certain number of reinforcement strips on the membrane structure to improve the mechanical properties of the membrane structure and reduce wrinkle deformation at the same t...

AI Technical Summary

Problems solved by technology

[0004] In the current engineering design, the layout of the reinforcement belt of the membrane structure is mostly designed based on engineering experience, lacking mature theoretical guidance, and the wrinkle deformation of the membrane structure is a key design index that affects the performance of the membrane

The existing design methods generally do not consider the influence of the reinforcement strip layout on the wrinkle deformation of the membrane structure, so it is urgent to optimize the reinforcement strip layout of the membrane structure to improve the performance of the membrane structure

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