Optimization of thin-walled ring gear clamping deformation based on multi-island genetic algorithm

HAN Jun, DUAN Rong-xin, ZHANG Lei, WANG Jing
(School of Mechanical Engineering, Inner Mongolia University of Science and Technology, Baotou 014010, China)

Abstract: Aiming at the problem of deformation of the thin-walled ring gear, the structural parameters of the clamp components and the applied clamping force were optimized.The multi-island genetic algorithm was used to optimize the structural parameters and clamping force of the clamp. The ABAQUS software was used to analyze the deformation of the ring gear by finite element analysis, and the ABAQUS software optimization algorithm was integrated in Isight. Taking the minimum clamping deformation as the objective function, and the clamping force and fixture structure parameters during the clamping process for the variables, the multi-island genetic algorithm was used to optimize the clamping force of the thin-walled ring gear and the structure of the clamp.The clamping force and fixture structure parameters that minimize the deformation of the thin-walled ring gear were obtained. The results show that the deformation of the clamping after the optimization is reduced by 93.38%, which effectively reduces the deformation caused by the improper application of the clamping force and the unreasonable structure of the clamp.The subsequent processing precision is obviously improved, and the feasibility of the multi-island genetic algorithm for the optimization of the ring gear clamping deformation is verified.
Key words: multi-island genetic algorithm; ABAQUS; finite element analysis; clamping deformation