接触面凹部に入った粘性潤滑油の解析

概要

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In the case of plane strain plastic compression, behavior of a viscous lubricating oil trapped in a small pit on a contact surface is calculated by a finite element method. The oil pressure is controlled by the yielding condition. When the oil pressure is constant over the surface, the oil does not flow and the pit is not flattened. When the lateral deformation of material is constrained and pressure gradient is produced, the oil in the pit flows out and the pit is flattened. Reduction in heigth required to flatten the pit is above several times of the pit depth. A decrease in the viscosity and an increase in the pit depth enhance the flattening. When the compression tool is slid with a high speed, a hydrodynamic effect of the oil causes a pressure change and the pit moves in the sliding direction.
社団法人日本機械学会の論文
2001-04-25