F-0220 直接接触と導入油量変化を考慮した潤滑作動面の非定常油膜挙動解析(S35-2 新しい潤滑技術への挑戦)(S35 トライボロジーと機械要素の新たな展開)

概要

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A numerical method was developed for the analysis of contact stresses and oil-film-behavior under unsteady mixed EHL condition. The state of each meshing point in the calculation region is divided into three conditions, i.e., hydrodynamic, directly contacted and cavitated. In order to modify the pressure distribution by relaxation method, Reynolds equation and others which have been used in EHL analysis are applied to hydrodynamic region, while an elastic equation expressing that the gap should be zero is applied to the direct contact region. In the cavitation region, the transportation equation of oil quantity is applied and the transition from cavitation region to hydrodynamic region can be decided from the condition whether the oil mass quantity fills the gap or not. Some results which were obtained with application of this method are shown, such as transient mixed EHL for rolling contact of rough surfaces and oil-film-behavior between piston ring and cylinder liner.
一般社団法人日本機械学会の論文
2001-08-22