Elastohydrodynamic Grease Lubrication Theory and Numerical Solution in Line Contacts
نویسنده
چکیده
In this paper, film thickness and pressure distribution of EHL in line contacts for four kinds of greases and one type of oil are calculated under a series of rolling velocities by wing an inverse solution method. The Herschel-Bulkley model is wed for the rheological characteristics of the grease. Based on the theoretical analysis and numerical calculation, the following influences on film thickness and pressure distribution in EHL of grease are analyzed: the effects of starvation, yield stress, presheared grease and fresh grease, and approach and separation between two cylinders. The effect of different rheological characteristics of grease O I L film thickness is also investigated.
منابع مشابه
Hydrodynamic and Elastohydrodynamic Lubrication
Contents 1. Introduction 2. Stress-induced lubricant degradation 3. Basic equations governing the fluid elastohydrodynamic lubrication (EHL) of line and point contacts 3.1. Equations of fluid motion 3.2. Contact surface displacements in line and point lubricated contacts 4. Steady isothermal EHL problems for lightly loaded non-conformal line contacts 5. Steady isothermal EHL problems for heavil...
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