...Lucas Hildebrand; Philipp Beierer; Thomas Lohner; Karsten Stahl For the reliable operation of a gearbox, consistently sufficient lubrication of machine elements is necessary. Thus, the gearbox fluid flow plays an important role. The state of the art indicates that computational fluid dynamics (CFD...

...Farshid Sadeghi; Ujjawal Arya; Saeed Aamer; Andreas Meinel Optimizing bearing performance is based on effective lubrication, especially in high-speed machinery, where minimizing churning and drag losses is of significant importance. Over the past few decades, extensive research has been conducted...

...Shengnan Zhang; Ming Yan; Yushi Wang A methodology is proposed to study the interplay between tooth wear and contact fatigue under elastohydrodynamic lubrication condition. The modeling methodology includes the influence of contact fatigue on wear and the influence of wear on contact fatigue. First...

...Wei Wang; Wenhan Zhao; Qiang Ma; Ange Nsilani Kouediatouka; Hui Zhang; Guangneng Dong; Meng Hua; Hon-Yuen Tam The synergistic effect of surface texturing and lubricants with various viscosity and polarity properties is an attractive and unexplored topic. In this study, surface texturing...

..., the lubricating mathematical model of the DDHLS is established based on the perturbation method and solved by the finite difference method. The influences of the nut-radial-displacement, the nut-tilt, and the dual-drivable design on the transmission performance of the DDHLS are researched. The results show...

...A. Dindar; A. S. Chimanpure; A. Kahraman A tribo-dynamic model of ball bearings is proposed to predict their load-dependent (mechanical) power losses. The model combines (i) a transient, point contact mixed elastohydrodynamic lubrication (EHL) formulation to simulate the mechanics of the load...

... tribometer. The results show that TiC formed when Ti content in the coating was higher than 5.8 at% and the I D /I G ratios increased gradually with the increasing Ti content. Ti-DLC with 0.7 at% Ti had the highest H/E and H 3 /E 2 ratios and exhibited optimal tribological properties under lubrication...

... the RE in two-dimensional hydrodynamic lubrication (HL) model of a non-dimensional lubricant film between a smooth and a textured rigid surface to investigate flat and sloped texture floor profiles of infinitely wide textured bearings. They found that the optimum depth of the texture features...

...Yufu Xu; Jingyuan Yu; Yinghui Dong; Tao You; Xianguo Hu As a novel layered material, black phosphorus (BP) shows unexpected characteristics in many aspects including tribological application. In this work, BP was prepared through ball milling from red phosphorus (RP). The boundary lubricating...

...Yeau-Ren Jeng; Yao-Huei Huang; Ping-Chi Tsai; Gan-Lin Hwang References [1] Mabery , C. F. , 1910 , “ Lubrication and Lubricats ,” Ind. Eng. Chem. , 169 , pp. 317 – 328 . 10.1021/ie50016a001 [2] Salomon , G. , Gee , A. W. J. D. , and Zaat , J. H. , 1964 , “ Methanol...

... is made available for the reader of the paper. The model and the associated numerical solution method have significant advantages over today's most frequently used cavitation algorithms, which are based on Elrod–Adams pioneering work. cavitation tribology lubrication linear complementarity...

.... Editor: Robert L. Jackson. 24 10 2012 21 07 2013 Determining friction is as equally essential as determining the film thickness in the lubricated contact, and is an important research subject. Indeed, reduction of friction in the automotive industry is important for both...

...K. H. Jung; Y. T. Im Since the linear regression was conducted according to the type of lubricants, the magnitude of γ emphasizing the effect of the viscosity of the lubricant on the friction was varied to possibly indicate the characteristics of the lubricant such as oiliness, which...

...) ), while the f amplitude is adjusted to produce the minimal friction coefficient (Eq. (46) ). The viscosity/pressure-temperature relationship is modeled with Eq. (7) . The required properties of the lubricant (mineral turbine oil OM 100) were established from measurements presented by Crook [ 1...

... is commonly represented as a Bingham fluid as described in the text of Bird et al. [( 21 )], Part 1 - Fluid Mechanics. Tichy [( 22 )] describes some of the peculiarities of this model in lubrication flow. Bird et al. [( 21 )] describe the Bingham fluid as purely viscous (or generalized Newtonian). The shear...

...Bassem A. Kheireddin; Vinay Narayanunni; Mustafa Akbulut This work deals with the effect of surface roughness parameters on the frictional properties of nanowire-based lubrication systems (NBLS) across Cu surfaces with various topographies. The friction coefficient was discussed in the context...

.... Compared with normal surfaces (316 stainless steel flat surfaces without any dimples or coatings), the frictional properties of such magnetic surfaces were investigated under different loads and sliding speeds when lubricated with ferrofluids using a friction test rig. Much attention was paid to the effect...

... that existing valve train friction models do not reliably predict friction in boundary and mixed lubrication conditions and are not sensitive to lubricant chemistry. In these conditions, the friction losses depend on the tribological performance of tribofilms formed as a result of surface–lubricant additive...

... lubrication regimes. However, papers focused on this particular aspect in face seals are rather scarce compared with those dealing with other popular sealing devices. The present study thus proposes a numerical flow model of mixed lubrication in mechanical face seals. It achieves this by evaluating...

...Vimala Manivasakan; Govindarajan Sumathi A theoretical investigation of the laminar squeeze flow of a couple-stress fluid between a flat circular static disk and an axisymmetric curved circular moving disk has been carried out using modified lubrication theory and microcontinuum theory...