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RISEffect of Roughness Orientation on the Elastohydrodynamic Lubrication Film Thickness
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Effect of roughness orientation on lubricant film thickness has been an important issue of surface design, attracting much attention since the 1970 s. A systematical study, however, is still needed for various contact ...
On the Stribeck Curves for Lubricated Counterformal Contacts of Rough Surfaces
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The “Stribeck curve†is a wellknown concept, describing the frictional behavior of a lubricated interface during the transition from boundary and mixed lubrication up to fullfilm hydrodynamic/elastohydrodynamic ...
Progressive Mesh Densification Method for Numerical Solution of Mixed Elastohydrodynamic Lubrication
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Numerical solution of mixed elastohydrodynamic lubrication (EHL) is of great importance for the study of lubrication formation and breakdown, as well as surface failures of mechanical components. However, converged and ...
Elastohydrodynamic Lubrication of Inhomogeneous Materials Using the Equivalent Inclusion Method
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Solid materials forming the boundaries of a lubrication interface may be elastoplastic, heat treated, coated with multilayers, or functionally graded. They may also be composites reinforced by particles or have impurities ...
Simulation of Plasto Elastohydrodynamic Lubrication in a Rolling Contact
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Surface plastic deformation due to contact (lubricated or dry) widely exists in many mechanical components, as subsurface stress caused by highpressure concentrated in the contact zone often exceeds the material yielding ...
A Starved Mixed Elastohydrodynamic Lubrication Model for the Prediction of Lubrication Performance, Friction and Flash Temperature With Arbitrary Entrainment Angle
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In this study, a modified mixed lubrication model is developed with consideration of machined surface roughness, arbitrary entraining velocity angle, starvation, and cavitation. Model validation is executed by means of ...
A Theoretical Analysis of the Mixed Elastohydrodynamic Lubrication in Elliptical Contacts With an Arbitrary Entrainment Angle
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Numerical simulations of the elastohydrodynamic lubrication (EHL) have been conducted by many researchers, in which the entrainment velocity is usually parallel to one of the axes of Hertzian contact ellipse. However, in ...
Simulation of Plasto Elastohydrodynamic Lubrication in Line Contacts of Infinite and Finite Length
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Line contact is common in many machine components, such as various gears, roller and needle bearings, and cams and followers. Traditionally, line contact is modeled as a twodimensional (2D) problem when the surfaces are ...
Mixed Elastohydrodynamic Lubrication With Three Dimensional Machined Roughness in Spiral Bevel and Hypoid Gears
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Spiral bevel and hypoid gears are key components widely used for transmitting significant power in various types of vehicles and engineering machineries. In reality, these gear surfaces are quite rough with threedimensional ...
Plasto Elastohydrodynamic Lubrication in Point Contacts for Surfaces With Three Dimensional Sinusoidal Waviness and Real Machined Roughness
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Efficiency and durability are among the top concerns in mechanical design to minimize environmental impact and conserve natural resources while fulfilling performance requirements. Today mechanical systems are more compact, ...