Modeling and analysis for surface texturing on soft sliders in mixed lubrication  

作　　者：Sen Jiang Qi Liu Hua Ji Wei Wang Zhaozhe Meng Jiawei Wang Guangneng Dong 

机构地区：[1]Key Laboratory of Education Ministry for Modern Design and Rotor-bearing System,Xi’an Jiaotong University,Xi’an 710049,China [2]School of Mechanical and Electrical Engineering,Jiangsu Normal University,Xuzhou 221000,China [3]School of Hydraulic and Civil Engineering,Tibet Agricultural and Animal Husbandry University,Nyingchi 860000,China

出　　处：《Friction》2025年第3期93-105,共13页摩擦(英文版)

基　　金：supported by the National Natural Science Foundation of China(No.51975454);the Fundamental Research Funds of Xi’an Jiaotong University for Students(No.xzy022022029).

摘　　要：Experiments have shown that surface texturing can enhance the tribological properties of bearings and seals made of soft materials such as polymers.However,the underlying mechanisms are still not fully understood and lack theoretical research.In this study,a mixed elastohydrodynamic model is specifically developed to explore the tribological behaviors of textured soft sliders.This model couples the flow,cavitation,deformation,and contact equations,considering both normal and shear stress effects with the fast Fourier transform method.The local deformation,contact and hydrodynamic pressure distributions of soft surfaces with multidimples are obtained,and a parametric study for the circular,triangular and partial texturing is conducted.It is found that the local deformations in different dimples may have a synergistic effect on providing additional hydrodynamic load support,termed the“barrel-like equivalent surface effect”.The textures concentrate the contact pressure at the dimple edges but may reduce the average contact pressure.

关 键 词：mixed lubrication surface texturing soft elastic deformation numerical modelling 

分 类 号：TH117.2[机械工程—机械设计及理论]