直接接触を考慮した非定常点接触弾性流体潤滑の理論解析

概要

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A numerical method of analysis for unsteady elastohydrodynamic lubrication of point contacts was developed with consideration of direct contacts. In order to make the analysis possible, three states of the contacting regions are distinguished, i. e., the hydrodynamic-fiim-formation, the direct contact and the cavitation regions, to which different equations are applied, respectively. In piace of Reynolds equation applied to the hydrodynamic-film-formation region, elasticity equation is used as the governing equation of the direct-contact region. Not only pressure and fiim-thickness, but also the oil mass quantity at each point in the calculation region are always grasped and used to decide the state of the point and the goveming equation. The results by this method are presented for the case of starting from Hertzian contact condition with zero velocity and for periodically varying velocity between zero and 50 mm/s. It is shown that increase in pressure at the contact points is not so large even when direct contacts occur.
一般社団法人日本機械学会の論文
1999-09-25