An analytical approach towards EHD analysis of connecting-rod bearing

A. Benhamou, A. Bounif, P. Maspeyrot, C. Mansour

Abstract


Elastohydrodynamic (EHD) journal bearings in rotating machine parts are subjected to very severe operat-ing conditions, leading to a reduction in the minimal thick-ness of the lubricating film which can generate premature wear of the contact. In this work, an analytical method of calculating the minimal thickness of the oil film was pro-posed. It takes into account the effect of the elastic defor-mations due to both hydrodynamic pressure and inertia. The elastic deformations are calculated analytically and simultaneously. The connecting – rod bearing body defor-mations was predicted under low and moderate engine regimes. The correction produced by the introduction of the effect of inertia, have shown a clear difference for the global behaviour. The method was applied for analysis of a General Motors connecting – rod bearing engine.

DOI: http://dx.doi.org/10.5755/j01.mech.20.2.6935


Keywords


elastohydrodynamic (EHD); inertia; elastic deformation; oil film thickness

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Print ISSN: 1392-1207
Online ISSN: 2029-6983