... to investigate the lubrication performance of the DT worm drive during meshing and provide a theoretical basis for understanding the elastohydrodynamic lubrication ( EHL ) characteristics. Design/methodology/approach An EHL model of the DT worm drive is developed based on the gear geometry...

...Jian Wang; Yu Lu; Han Liang Fang; Jun Zhang Purpose Elastohydrodynamic lubrication ( EHL ) plays a crucial role in high-speed and heavy-duty gear transmission systems, exerting significant influence on efficiency, vibration, noise and service life. This study aims to investigate the dynamic...

... (Yu et al., 2020): (1) R = A m A r , According to Stachowiak and Batchelor (2013) , the minimum film thickness in an elliptical point contact under elastohydrodynamic lubrication (EHL) conditions can be related to the operating conditions and material...

... on the fluid–solid conjugate heat transfer theory for full ceramic ball bearings. The distribution of flow, temperature and pressure field of bearings under variable working conditions is analyzed. Meanwhile, the mathematical model of elastohydrodynamic lubrication (EHL) of full ceramic ball bearings...

... Publishing Limited Licensed re-use rights only EHL simulation Elastohydrodynamic lubrication Microtextures Optimization Cam/tappet contact a_c = Carreau parameter; A = texture amplitude; b_Hertz = Hertzian contact half-wide...

... on elastohydrodynamic lubrication theory is proposed, which is used to present the leakage characteristics of bent-axis piston pump. The model is composed of three parts. First, the dynamic gap in the piston ring-cylinder bore interface (PRCB) is described via the elastohydrodynamic lubrication equations...

... detergent under pure sliding was experimental studied and the mechanism of bearing damage in food production equipment was investigated. Based on the study, the solution to avoid such damage was proposed. Bearing Elastohydrodynamic lubrication Cleaning detergent Emulsions Wear With people...

...Qiancheng Qin; Xue-Feng Wang; Rufu Hu; Xiaomin Cheng Purpose This study aims to investigate the effects of single dent on the film thickness and pressure in elastohydrodynamically lubricated (EHL) point contacts by numerical analysis. Design/methodology/approach The governing equations...

.../approach The mathematical formulation considers the Partir-Cheng modified Reynolds equation. The mass-conserving Elrod-Adams p-θ model with the JFO approach is used to deal with cavitation. A fluid-structure coupling procedure is considered for the elastohydrodynamic lubrication. Accordingly, a 3...

... to obtain the damping coefficient of ball bearing. Design/methodology/approach Based on Hertzian contact theory and elastohydrodynamic lubrication theory, the point contact oil film damping analysis model of ball bearing is established. The comprehensive damping calculation method considering external...

... Elastohydrodynamic lubrication Friction coefficient Magneto-hydrodynamic lubrication Non-Newtonian lubricants Slider-bearings B = bearing width (m); B → 0 = applied magnetic field, B → 0 = B 0 e → z ; C_f...

... show good accordance to the measurements of pressures, temperatures and leakages for pressures up to 3000 bar. Comparison with elastohydrodynamic lubrication results outlines the need to consider temperature and pressure effects viscosity and solid deformation for the simulation and design...

...Stephan Tremmel; Max Marian; Michael Zahner; Sandro Wartzack; Marion Merklein Purpose This paper aims to derive tailor-made microtextures for elastohydrodynamically lubricated (EHL) contacts under consideration of manufacturing possibilities. Design/methodology/approach Component tests were...

...Punit Kumar Purpose The purpose of this paper is to introduce the concept of stationary inlet zone bump (IZB) for film thickness enhancement in unidirectional pure sliding elastohydrodynamic lubrication (EHL) line contacts and to investigate the effects of maximum Hertzian pressure (load...

... stroke. Chu (2010) explore the pure squeeze thin film elastohydrodynamic lubrication motion of circular contacts with adsorption layers attached to each surface under constant load condition. Gasni et al. (2009) use ultrasonic reflection technique measured the lubricating film thickness...

... function is used to represent the random and multi-scale characteristics of the rough surface topography. The elastohydrodynamic lubrication (EHL) model of contact between the steel ball and raceway is built. The full numerical solutions of the pressure and film thickness are obtained by using the multi...

...Linlin Li; Jiajun Yang Purpose This paper aims to predict the dynamic behaviors of contact between the steel ball and raceway in the elastohydrodynamically lubricated ball linear guide, thus providing a guidance for lubrication design for ball linear guide. Design/methodology/approach Based...

...Li-Ming Chu; Jaw-Ren Lin; Cai-Wan Chang-Jian Purpose The modified Reynolds equation for non-Newtonian lubricant is derived using the viscous adsorption theory for thin-film elastohydrodynamic lubrication (TFEHL) of circular contacts. The proposed model can reasonably calculate the phenomenon...

... as the fatigue life of spur gear. Design/methodology/approach A numerical contact fatigue life model of a coated spur gear pair under elastohydrodynamic lubrication (EHL) is developed based on the characteristics of gear geometry and kinematics, lubrication conditions and material properties. Frequency...

... Surface roughness Rayleigh step bearing Elastic deformation Elastohydrodynamic lubrication Progressive mesh densification ρ = Lubricant’s density (kg/m^{3); h = Film thickness (m); p = Fluid film pressure (Pa); μ = Lubricant’s}...