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国外文献 > 1.轴承 > 3. 材料与制造 > 制造工艺

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标 题： CFD ANALYSIS OF A LOW FRICTION POCKETED PAD BEARING
低摩擦口袋垫轴承的CFD分析
作 者： Petra Brajdic-Mitidieri
A. David Gosman
Stathis Ioannides
Hugh A. Spikes
关键词： Hydrodynamic lubrication  [水动力润滑]
Plain bearing  [ 普通轴承]
CFD  [ CFD]
Surface texture  [ 表面纹理]
Pockets  [ 口袋]
Cavitation  [ 空化]
Friction  [ 摩擦]
出版年： 2004
会议名： 2004 ASME/STLE International Joint Tribology Conference (TRIB2004)
2004年ASME/STLE国际摩擦学联合会议（TRIB2004）
届 次：
摘 要： A commercial CFD code has been applied to model lubricant flow behaviour within 2D and 3D linear pad bearings having closed pockets or recesses. The study indicates that the presence of closed pockets can result in a significant reduction in bearing friction coefficient. At high convergence ratios, no cavitation is predicted within the pockets. This means that suitably-positioned pockets in the high-pressure region of the bearing result in a much greater reduction in local shear stress than in local pressure, so that there is an overall reduction in friction coefficient. At low convergence ratios, cavitation occurs in the inlet to the pockets so that each pocket acts an effectively-independent step bearing. This results in the overall bearing supporting a higher load and thus having lower friction coefficient than is the case without pockets.

已采用商业CFD代码对具有封闭凹槽或凹陷的二维和三维线性垫片轴承中的润滑剂流动行为进行建模。研究表明，存在封闭凹槽可显著降低轴承摩擦系数。在高收敛比条件下，预测凹槽内部不会发生空化现象。这意味着在轴承高压区域适当布置的凹槽，能比局部压力带来更大的剪切应力减小效果，从而整体上降低摩擦系数。而在低收敛比条件下，凹槽入口处会发生空化，导致每个凹槽实际上起到独立的阶梯式轴承作用。这使得整个轴承能够承受更高的载荷，因此其摩擦系数低于无凹槽情况下的水平。
中文内容为网络AI翻译，专业术语未必准确，仅供参考。

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