Research on the influence of bionic textures on the lubrication efficiency and loss power of spur gears

Abstract Focused on the lubrication optimization challenge in gear transmission systems, this paper introduces a novel approach involving the coordinated adjustment of bionic textures and nozzle arrangement. By analyzing the surface texture characteristics of scallop shells, a bionic textured tooth surface is designed to improve oil film formation. The impact mechanism of texture parameters on the oil film coverage of the tooth surface is explored through the integration of the MPS (Moving Particle Semi-Implicit Method) numerical simulation technique. Based on orthogonal experiments, the influence patterns of nozzle layout parameters on power loss are examined, leading to a substantial reduction in gear pair power loss. The findings indicate that, compared to conventional gears, the mean oil film coverage rate of the bionic gear under different nozzle layout conditions increases by 13.26% to 47.01%, while power loss decreases by 8.83% to 36.68%.