OPTIMIZATION OF COMPOSITES STRUCTURE BASED ON IMPROVED DIFFERENTIAL EVOLUTION ALGORITHM

doi:10.19936/j.cnki.2096-8000.20210328.002

Abstract

Abstract: An improved S-shaped mutation Differential Evolution algorithm is proposed and its application in optimization of composites structure is studied. Firstly, the influence mechanism of control parameters on the convergence and optimization ability of the Differential Evolution algorithm is analyzed. Secondly, aiming at the influence mechanism and learning from the "S-shaped curve" law of biological reproduction, a new change trend of the mutation rate is proposed, and an improved Differential Evolution algorithm (SDE) is proposed, advantage of the improved algorithm is proved by numerical examples. Finally, an optimization computing system based on the SDE algorithm for composites structure is established, which is used to optimize a composites component of a space vehicle, and the weight is 36.5% lower than the initial design.

Key words: composites structure, optimization, the differential evolution algorithm, S-shaped curve

CLC Number:

TB332

MA Sen, ZHAO Qi-lin, SHI Li-ming, SHAN Cheng-zhi. OPTIMIZATION OF COMPOSITES STRUCTURE BASED ON IMPROVED DIFFERENTIAL EVOLUTION ALGORITHM[J]. COMPOSITES SCIENCE AND ENGINEERING, 2021, 0(3): 14-20.

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