表面技术2025，Vol.54Issue(9)：79-90,12.DOI:10.16490/j.cnki.issn.1001-3660.2025.09.006
基于海洋贝类结构的仿生水润滑轴承增载减摩性能的仿真研究
Simulation Study on Load Increase and Friction Reduction Performance of Biomimetic Water-lubricated Bearings Based on Marine Shellfish Structures
摘要
Abstract
The work aims to improve the load-carrying capacity and friction reduction performance of water-lubricated bearings.Different shapes of marine shellfish textures are designed on the surface of water-lubricated bearings.Based on the fluid-structure interaction theory,a study is conducted on biomimetic water-lubricated bearings to analyze the effects of texture shape,texture location,texture density,and axial distribution rate of textures on lubrication characteristics of bearings.The study aims to determine the optimal texture shape for water-lubricated bearings by comparing their load-bearing capacity and friction reduction performance.Once the texture shape is identified,the study focuses on investigating how the texture location affects the lubrication performance of water-lubricated bearings.With the texture location clarified,the effects of texture density on performance are investigated,followed by analyzing the effects of texture axial distribution rate on the load-bearing capacity and friction reduction performance of water-lubricated bearings.From the experimental results,by comparing biomimetic textured and smooth non-textured water-lubricated bearings,it is evident that,bearings with biomimetic textures have enhanced load-bearing capacity,with the tegillarca granosa texture bearing exhibiting the highest load capacity(78.76 N).In terms of friction reduction,biomimetic water-lubricated bearings still outperform smooth water-lubricated bearings,with the biomimetic tegillarca granosa texture showing the most significant reduction in friction force(0.85 N)and friction coefficient(0.010 8).The shape differences among three marine shellfish textures affect the micro dynamic pressure effect,with tegillarca granosa,ruditapes philippinarum and meretrix meretrix textures creating"bullet-shaped","U-shaped"and"circular spot-shaped"high-pressure regions in the water film,respectively.Once the texture shape is determined,the texture location,texture density,and axial distribution rate of textures are analyzed with biomimetic tegillarca granosa texture bearings.The different positions of textures have varying effects on promoting micro dynamic pressure effects and hydrodynamic pressure effects on bearings.Specifically,when textures are placed"downstream"in the primary load-bearing area of smooth water-lubricated bearings,they effectively enhance load-carrying capacity and reduce friction coefficients.Increasing texture density enhances load-carrying capacity and friction reduction effectiveness.When the texture density is low(11.5%),biomimetic water-lubricated bearings exhibit a slight increase in load-carrying capacity(71.74 N)compared to smooth water-lubricated bearings,with varying degrees of reduction in friction force(0.92 N)and friction coefficient(0.012 9),with an optimal performance observed at 34.7%texture density.As the axial distribution rate of textures increases,the area experiencing microdynamic pressure effect gradually expands from the middle to both ends of the bearing.When the distribution rate reaches 90%,the maximum water film pressure can increase by 19.45%,the friction coefficient drops below 0.01 and an"ultra-low friction"state is reached.At the same time,under this texture axial distribution rate,the load-carrying capacity of biomimetic water-lubricated bearings is significantly enhanced compared to that of smooth water-lubricated bearings.Therefore,compared to the other two types of marine shellfish textures,the texture of the tegillarca granosa contributes the most to enhancing the performance of water-lubricated bearings.When the texture is located"downstream"in the main load-carrying area of the smooth bearings,it maximizes the additional hydrodynamic pressure effect.Increasing the texture density and axial distribution rate enhances the load-carrying capacity and friction reduction performance of bearings.关键词
海洋贝类织构/水润滑轴承/流固耦合/承载性能/减摩性能Key words
marine shellfish texture/water-lubricated bearings/fluid-solid interaction/loading-carrying capacity/friction reduction performance分类
机械工程引用本文复制引用
金磊,梁鹏,郭峰,李书义,张晓寒,马旭,朱忆玺..基于海洋贝类结构的仿生水润滑轴承增载减摩性能的仿真研究[J].表面技术,2025,54(9):79-90,12.基金项目
国家自然科学基金(52375190,52342503,52175173,52005278,52205200) （52375190,52342503,52175173,52005278,52205200）
山东省高等学校"青创科技支持计划"(2021KJ077) （2021KJ077）
山东省泰山学者人才工程项目(TS20190943) （TS20190943）
山东省自然科学基金(ZR2021ME198,ZR2022ME081) （ZR2021ME198,ZR2022ME081）
山东省科技型中小企业创新能力提升工程项目(2023TSGC0612) The National Natural Science Foundation of China(52375190,52342503,52175173,52005278,52205200) （2023TSGC0612）
Shandong Province Higher Educational Science and Technology Program(2021KJ077) （2021KJ077）
'Taishan Scholar'Talents Project from Shandong Province(TS20190943) （TS20190943）
Shandong Provincial Natural Science Foundation(ZR2021ME198,ZR2022ME081) （ZR2021ME198,ZR2022ME081）
Shandong Province Science and Technology Small and Medium Enterprises Innovation Ability Enhancement Project(2023TSGC0612) （2023TSGC0612）
