Multi-objective Optimization Design of Helical Gear in Centrifugal Compressor Based on Response Surface Method

Abstract

Based on ANSYS Workbench, this paper adopts response surface method, in order to multi-objectively optimize the helical gear in centrifugal compressor. The local sensitivity and global sensitivity are analyzed using the constructed response surface. The linear relationship between the three dimension parameters and the mass of the helical gear, as well as the non-linear relationship between the three dimension parameters and the maximum stress on the helical gear are discussed. And it is found that changing the dimensions of the minor radius and tensile depth of the ring-groove weight loss makes little influence to the maximum stress on the helical gear. Then the helical gear is multi-objectively optimized using the constructed response surface. Premised on the same application requirements, the mass of the helical gear is reduced 27.4% and the maximum stress on the helical gear is within the allowable range.