基于流体动压润滑效应的人工髋关节材料表面织构优化研究  

Optimization Research on Surface Texturing of Artificial Hip Joint Materials Based on Hydrodynamic Lubrication Effect

作　　者：潘绍斌 洪跃[1] 严新谊 

机构地区：[1]上海大学机电工程及自动化学院,上海200070

出　　处：《润滑与密封》2015年第7期70-74,共5页Lubrication Engineering

基　　金：国家自然科学基金项目(51205241);教育部博士点基金项目(20123108120008)

摘　　要：以销-盘试验为模型,基于有限差分法,以Reynolds方程为理论基础,建立含有表面织构的人工髋关节材料的摩擦表面在全膜润滑下的数值模型,分析表面织构各个参数对两摩擦表面间油膜压力分布的影响。结果表明,在该模型条件下,销-盘摩擦表面间能够形成流体动压润滑,不同的表面织构参数对销盘摩擦表面间的油膜压力分布产生较大的影响。通过该模型可得到实现最佳摩擦表现的最优化的表面织构参数,从而为人工髋关节材料销-盘实验的设计提供参考。A numerical model of friction surfaces with surface texturing in full film lubrication was established with the Reynolds equation as the theoretical basis of the model and based on a pin on disc test and finite difference method. The effect of surface texturing parameters on pressure distribution of the oil film between the friction surfaces was analyzed. The results show that hydrodynamic lubrication is produced in the friction surface of pin and disc pairs under the condition of the established model, and the surface texturing parameters influence the oil film pressure distribution in the pin and disc surface. The optimized surface texturing parameters that the higher average pressure of oil film can be realized were ob- tained, which can be used to determine the optimized parameter range of surface texture for pin on disc test of artificial hip joint materials.

关 键 词：表面织构 人工髋关节 动压润滑 

分 类 号：TH117[机械工程—机械设计及理论]