基于CFD的新型仿生织构及实验验证  

Novel Biomimetic Texture and Experimental Validation Based on CFD

作　　者：韩智斌 于学荞 李红双 陶其赫 马廉洁[1,2] Han Zhibin;Yu Xueqiao;Li Hongshuang;Tao Qihe;Ma Lianjie

机构地区：[1]东北大学机械工程与自动化学院 [2]东北大学秦皇岛分校控制工程学院

出　　处：《工具技术》2024年第9期19-24,共6页Tool Engineering

基　　金：国家自然科学基金(51975113)。

摘　　要：针对氧化锆陶瓷零部件难以满足新型高强度工作要求的问题,在生物体表面提取了三种仿生轮廓,利用数值模拟和试验相结合的方法探究织构化表面仿生形状、织构角度、织构排布方式对减摩性能的影响。模拟结果表明,不对称的压力分布区域、较小的最大负压绝对值具有更大的油膜承载力,鳞形织构、270°的织构角度及“>”型织构排布方式具有较小的负压绝对值峰值和更大的油膜承载力,减摩性能最佳。试验结果表明,鳞形织构在不同工况下均取得了最低的摩擦系数,验证了数值模拟的结果。This paper addresses the challenge of zirconia ceramic components gradually failing to meet the demands of new high-strength working conditions.To tackle this issue,three biomimetic profiles are extracted from biological surfaces.Employing a combined approach of numerical simulations and experiments,the impact of biomimetic surface shapes,texture angles,and arrangement on friction reduction performance is thoroughly investigated.The simulation results highlight that regions with asymmetric pressure distribution and larger negative pressure exhibit superior oil film bearing capacity.Among the examins configurations,the fish scale texture,a texture angle of 270°,and the">"texture arrangement exhibit more significant negative pressure regions and higher oil film bearing capacity,leading to optimal friction reduction performance.Experimental results corroborate the simulation findings,demonstrating the consistent achievement of the lowest friction coefficients by the fish scale texture under various working conditions.

关 键 词：仿生织构 形状 角度 排布方式 

分 类 号：TH115.58[机械工程—机械设计及理论] TH164