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RISOn 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 ...
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 ...
Numerical Analysis of Turbulence Effect for Coupled Journal-Thrust Water-Lubricated Bearing With Micro Grooves
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The purpose of this study is to assess the role of turbulence on the lubrication performances of coupled journal-thrust water-lubricated bearing with micro grooves using a numerical model. The results of the simulation ...
Nonlinear Dynamic Analysis of a Rigid–Flexible Gear Transmission Considering Geometric Eccentricities
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Nonlinear vibration, a main factor affecting the dynamic stability, widely exists in the transmission system. In addition, geometric eccentricities caused by the manufacturing errors are inevitable in the gear transmission ...
Bifurcation and Chaos of a Spur Gear Transmission System With Non-Uniform Wear
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: In this study, a nonlinear dynamic model of a spur gear transmission system with non-uniform wear is proposed to analyze the interaction between surface wear and nonlinear dynamic characteristics. A quasi-static non-uniform ...
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 ...