考虑粗糙度影响的表面织构最优参数设计模型  

Optimal design model of surface texture with surface roughness considered

作　　者：马晨波[1] 朱华[2] 孙见君[1] 

机构地区：[1]南京林业大学机械电子工程学院,江苏南京210037 [2]中国矿业大学机电学院,江苏徐州221116

出　　处：《华中科技大学学报（自然科学版）》2011年第8期14-18,35,共6页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：国家自然科学基金资助项目(50975276;50475164);国家重点基础研究发展计划资助项目(2007CB607605);高等学校博士学科点专项科研基金资助项目(200802900513);南京林业大学高层次人才科研基金资助项目(163040051)

摘　　要：为考察表面粗糙度对织构表面摩擦学性能的影响,采用求解基于平均雷诺方程的表面织构润滑计算模型的方法,研究综合粗糙度和方向参数等对摩擦系数及最优织构参数的影响规律.结果表明:当织构表面具有横向粗糙条纹时具有较优的摩擦学性能表现;当综合粗糙度σ<0.5μm时,摩擦系数和最优织构深度不随综合粗糙度的变化而变化,当σ≥0.5μm时,摩擦系数和最优织构深度随粗糙度的增大而增大;最优织构直径随综合粗糙度的增大而增大,最优织构面积比与综合粗糙度之间不相关,最优织构参数不随方向参数的变化而变化.在仿真结果的基础上,建立考虑粗糙度影响时表面织构的最优参数设计模型,试验验证所建立的模型是合理的和正确的.In order to investigate the frictional performance of textured surfaces when its surface roughness was considered,the influences of composite root-mean-square（RMS） and the orientation parameter on the friction coefficient as well as the optimal parameters of textured surfaces were studied by solving the lubrication computation model of surface texture based on the average Reynolds equation.The results show that： the textured surfaces with the traverse surface roughness have the perfect frictional performance;the friction coefficient and the optimal depth of surface texture increase with the accretion of the composite RMS（σ） when σ0.5 μm,while the friction coefficient and the optimal depth of surface texture do not change with the composite RMS when σ≥0.5 μm;the larger the composite RMS,the larger the optimal diameter of surface texture,the optimal area ratio is not related to the composite RMS,the optimal parameters are not bound up with the orientation parameter.An optimal design model of surface texture is established based on the computational results,and the validation of the model is also verified.

关 键 词：表面织构 表面粗糙度 综合粗糙度 方向参数 摩擦系数 设计模型 

分 类 号：TH117[机械工程—机械设计及理论]