基于流固耦合的水润滑轴承板条结构优化研究  

Study on Structure Optimization of Water-lubricated Bearing Stave Based on Fluid-Structure Interaction

作　　者：张和牧[1] 朱汉华[1] 

机构地区：[1]武汉理工大学能源与动力工程学院,武汉430063

出　　处：《船舶工程》2011年第4期36-39,共4页Ship Engineering

基　　金：国家自然科学基金(No.50675162)

摘　　要：为研究水润滑轴承板条结构对其润滑性能的影响规律,利用有限元软件ADINA建立2D轴承底部中心板条的流固耦合模型,得到水膜压力分布,板条的综合位移和垂向位移分布,分析凹面型、平面型和凸面型板条以及橡胶厚度对水膜压力分布和板面变形的影响规律.研究表明:平面型和凹面型板条能够促进轴承形成流体动压润滑,凸面型板条减少水膜的承压区,不利于形成流体动压润滑;增加橡胶厚度,会降低水膜压力分布,增大橡胶的变形,从而降低了轴承的承载能力.In order to study the influence of stave structure on lubrication performances of water lubricated bearing, the 2D fluid structure interaction model of bearing bottom middle stave is built by ADINA. The water film pressure distribution, magnitude displacement distribution and vertical displacement distribution are got. Study is done on the influence of planar, convex, concave stave and the thickness of rubber on the water film pressure distribution and the vertical displacement of the bottom middle stave. The results show that flat stave and concave stave is useful to form elastohydrodynamic lubrication. However, convex stave is unfavorable to elastohydrodynamic lubrication for reducing the confined area of water film. Improving the rubber thickness can depress water film pressure and enhance the rubber deformation, which reduces the load capacity of bearing.

关 键 词：流固耦合 水润滑轴承 结构优化 ADINA 

分 类 号：TH133.3[机械工程—机械制造及自动化]