边界和混合润滑下仿鲨鱼皮织构的减摩性能  

Antifriction Properties of Shark Skin Texture Under Boundary and Mixed Lubrication

作　　者：周刘勇[1] 刘政[1] 张伟[1] 赵海生[1] ZHOU Liu-yong;LIU Zheng;ZHANG Wei;ZHAO Hai-sheng(School of Mechanical and Electronic Engineering,Jiangxi University of Science and Technology,Jiangxi Ganzhou341000,China)

机构地区：[1]江西理工大学机电工程学院

出　　处：《机械设计与制造》2019年第10期166-169,共4页Machinery Design & Manufacture

基　　金：国家自然科学基金项目(50801032);江西省自然科学基金项目资助(2008GQC0027)

摘　　要：鲨鱼皮体表的盾鳞结构上呈现细小的肋条,形成了一种非光滑表面的沟槽,并具有明显的减阻效果。探究盾鳞结构的表面特征,将其应用到机械表面摩擦中达到减摩效果。根据肋条曲线拟来进行拟合,重新构建仿鲨鱼皮织构表面模型,并在45钢表面制备出织构化的试样;之后采用MM-P2摩擦磨损试验机,考察织构化对光滑表面摩擦性能的影响;研究结果明:200N载荷条件下,凸起型织构的45钢表面,相比未织构表面,仿鲨鱼皮织构面的摩擦系数在边界润滑和混合润滑下分别降低9.52%和11.06%。The placoid scales of shark's skin have a small riblets.The riblets form grooved non-smooth surfaces.The grooved structure can reduce drag effectively.To research the placoid scales structure's surface characteristics can achieve drag reduction objective when we apply it to mechanical surface friction.Fitting the curve according to the riblets.The model about this bionic shark skin texture surface was established.Processing textured sample on the surface of 45 steel;Then,MM-P2 friction wear testing machine was adopted,investigating the influence of texturing on the friction properties of smooth surface.The result showed that under the condition of 200N loading,under the boundary lubrication and mixed lubrication,comparing with that of the non-textured surface of the 45 steel surface with raised texture,the friction coefficient of the textured surface of the shark skin was reduced by 9.52%and 11.06%respectively.

关 键 词：盾鳞 45钢 仿鲨鱼皮织构 边界和混合润滑 减摩 

分 类 号：TH16[机械工程—机械制造及自动化] TB17[生物学—生物工程]