基于Fluent涡轮增压器浮环轴承三维油膜力的仿真  

Simulation of Three-dimensional Oil Film Force on Turbocharger Floating Ring Bearing Based on Fluent

作　　者：郑惠萍[1] 彭立强[1,2] 

机构地区：[1]河北科技大学机械工程学院,石家庄050018 [2]河北工业大学机械工程学院,天津300130

出　　处：《汽车科技》2016年第1期7-11,共5页Auto Sci-Tech

基　　金：国家自然科学基金资助项目(51275150);河北科技大学五大平台开放基金(2014PT48)

摘　　要：浮环轴承具有结构简单、成本低、稳定性好、适应高转速等特点而在航空机械、汽车发动机等领域得到广泛的应用。本文首先通过Gambit软件建立了浮环轴承的双油膜有限元模型,然后利用fluent软件对轴承的三维油膜力进行模拟分析,研究在相同供油压力下,转速对油膜力分布、承载力的影响。分析结果表明浮环轴承内外油膜均存在楔形的收敛区和发散区,在这两个区域上分别存在正压值和负压值,其最大值随转速的升高而增大;轴承内外油膜的承载力均随转速的增加而增大。三维仿真模拟得到的油膜压力分布规律与文献[1]理论计算结论一致,本文给出了一种较准确的油膜力计算方法为后继的研究工作打下了基础。Floating ring bearings have been widely applied in aviation machinery, automobile engine etc for the characteristics of simple structure, low cost, good stability, suitable for high rotation speed etc. This paper first established a double oil films finite element model of floating ring bearing through Gambit software, and then three-dimensional oil film force of the bearing was simulated and analyzed using fluent software and the influence of the rotational speed to the oil film force distribution and bearing capacity was studied in the same oil pressure. Analysis results showed that inside and outside oil film in floating ring bearing have wedge-shaped the region of convergence and divergence zone. The positive pressure and negative pressure exist in these two regions respectively, and the maximum pressure value increases with the rise of rotational speed; inside and outside oil film bearing capacity increases with the rise of rotational speed. 3D simulation results showed that pressure distribution of oil film in floating ring bearings is consistent with documentation theoretical study, this calculation method of oil film force in floating ring bearings is provided as the base of the latter research

关 键 词：浮环轴承 油膜力 有限元模型 油膜承载力 

分 类 号：TH117[机械工程—机械设计及理论]