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Slip Condition Investigation in Textured Surfaces with Transient Elastohydrodynamic Lubrication | ||
| AUT Journal of Mechanical Engineering | ||
| دوره 8، شماره 4، 2024، صفحه 385-398 اصل مقاله (1005.37 K) | ||
| نوع مقاله: Research Article | ||
| شناسه دیجیتال (DOI): 10.22060/ajme.2024.23379.6126 | ||
| نویسندگان | ||
| Javad Sharifi Yalameh؛ Amir Torabi* | ||
| Department of Technology and Engineering, University of Shahrekord, Shahrekord, Iran | ||
| چکیده | ||
| The no-slip condition is an accepted condition in common fluid dynamics applications. In some cases, when high speed and pressure occur in a flow region near the surface, such as the lubrication of non-conformal surfaces, this assumption becomes controversial and the observation shows that the fluid can slide on the surfaces. This study has numerically investigated the effect of fluid slippage on the textured surface in transient elastohydrodynamic lubrication. The finite difference method extracted and discretized a numerical transient model based on the Newtonian lubricant fluid flow equations. The flow is assumed isothermal for a geometry including an upper cylinder and a lower flat dimple textured surface. A newly developed precise transient model is used for lubricated contact of a dimpled flat surface and a cylinder. This model considers passing the cylinder over a dimple in several time steps. In this paper, the model is comprehended by the critical shear stress model to consider boundary sliding. The results showed that with slippage, the lubrication friction decreases compared to the no-slip condition estimations. The occurrence of slip causes an average 15.42% decrease in the friction coefficient for flat surfaces. For dimpled surfaces, the occurrence of sliding for different depths of dimples is on average 15% decrease in the amount of friction coefficient while it decreases about 12% for different radii of the dimple. | ||
| کلیدواژهها | ||
| Slip Condition؛ Friction؛ Dimple؛ Critical Shear Stress؛ Lubrication | ||
| مراجع | ||
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[1] M. Kaneta, H. Nishikawa, K. Kameishi, Observation of wall slip in elastohydrodynamic lubrication, ASME journal of tribology, 112(3) (1990) 447-452.
[2] P. Wong, X. Li, F. Guo, Evidence of lubricant slip on steel surface in EHL contact, Tribology International, 61 (2013) 116-119.
[3] A. Ponjavic, J.S. Wong, The effect of boundary slip on elastohydrodynamic lubrication, RSC Advances, 4(40) (2014) 20821-20829.
[4] L. Guo, P. Wong, F. Guo, Correlation of contact angle hysteresis and hydrodynamic lubrication, Tribology Letters, 58 (2015) 1-9.
[5] X. Jin, J. Wang, Y. Han, N. Sun, J. Zhu, Discrepancy in oil film distribution observed in ZEV reciprocating motion, Industrial Lubrication and Tribology, 73(1) (2021) 177-189.
[6] W. Feng, Y. Han, G. Xiang, J. Wang, Hydrodynamic lubrication analysis of water-lubricated bearings with partial microgroove considering wall slip, Surface Topography: Metrology and Properties, 9(1) (2021) 015019.
[7] M. Tauviqirrahman, M.F. Afif, P. Paryanto, J. Jamari, W. Caesarendra, Investigation of the tribological performance of heterogeneous slip/no-slip journal bearing considering thermo-hydrodynamic effects, Fluids, 6(2) (2021) 48.
[8] M. Arif, S. Kango, D.K. Shukla, Investigating the effect of different slip zone locations on the lubrication performance of textured journal bearings, Industrial Lubrication and Tribology, 73(6) (2021) 872-881.
[9] M. Arif, S. Kango, D.K. Shukla, Analysis of textured journal bearing with slip boundary condition and pseudoplastic lubricants, International Journal of Mechanical Sciences, 228 (2022) 107458.
[10] B. Yao, G. Xiang, J. Wang, J. Guo, Y. Nie, Effects of wall slip on hydrodynamic performances of water-lubricated bearings under transient operating condition, International Journal of Surface Science and Engineering, 17(2) (2023) 73-91.
[11] X. Yi, H. Xu, G. Jin, Y. Lu, B. Chen, S. Xu, J. Shi, X. Fan, Boundary slip and lubrication mechanisms of organic friction modifiers with effect of surface moisture, Friction, (2024) 1-16.
[12] Y. Zhang, S. Wen, An analysis of elastohydrodynamic lubrication with limiting shear stress: part I—theory and solutions, Tribology transactions, 45(2) (2002) 135-144.
[13] F. Aurelian, M. Patrick, H. Mohamed, Wall slip effects in (elasto) hydrodynamic journal bearings, Tribology International, 44(7-8) (2011) 868-877.
[14] Q.-D. Chen, H.-C. Jao, L.-M. Chu, W.-L. Li, Effects of anisotropic slip on the elastohydrodynamic lubrication of circular contacts, Journal of Tribology, 138(3) (2016) 031502.
[15] Y. Zhao, P. Wong, L. Guo, Linear complementarity solution of 2D boundary slip EHL contact, Tribology International, 145 (2020) 106178.
[16] B. Sun, L. Chen, L. Guo, W. Wang, P. Wong, Experimental evidence on the enhancement of bearing load capacity by localised boundary slip effect, Tribology Letters, 69 (2021) 1-8.
[17] M.Y. Çam, M. Giacopini, D. Dini, L. Biancofiore, A numerical algorithm to model wall slip and cavitation in two-dimensional hydrodynamically lubricated contacts, Tribology International, 184 (2023) 108444.
[18] S. Singh, S. Kango, Effect of sliding speed on the thermohydrodynamic performance of partially slip‐textured slider bearings, Lubrication Science, 35(8) (2023) 574-595.
[19] B.J. Hamrock, S.R. Schmid, B.O. Jacobson, Fundamentals of fluid film lubrication, CRC press, 2004.
[20] G. Ma, C. Wu, P. Zhou, Influence of wall slip on the hydrodynamic behavior of a two-dimensional slider bearing, Acta Mechanica Sinica, 23(6) (2007) 655-661.
[21] Z. Fu, P. Wong, F. Guo, Effect of interfacial properties on EHL under pure sliding conditions, Tribology Letters, 49 (2013) 31-38.
[22] B. Jacobson, On the lubrication of heavily loaded cylindrical surfaces considering surface deformations and solidification of the lubricant, ASME journal of tribology, 95(3) (1973) 321-327.
[23] S. Yasutomi, S. Bair, W. Winer, An application of a free volume model to lubricant rheology I—dependence of viscosity on temperature and pressure, ASME journal of tribology, 106(2) (1984) 291-302.
[24] D. Dowson, G.R. Higginson, Elasto-hydrodynamic lubrication: international series on materials science and technology, Elsevier, 2014.
[25] A. Torabi, M.H. Alidousti, Numerical and experimental study of elastohydrodynamic grease lubrication of dimple textured surfaces, Acta Mechanica, 234(7) (2023) 2919-2931.
[26] A. Torabi, S. Akbarzadeh, B. Azami, Transient numerical modeling and experimental investigation of the effect of surface texture on elastohydrodynamic lubrication, Amirkabir Journal of Mechanical Engineering, 53(5 (Special Issue)) (2021) 3201-3212.
[27] J. Sta˚ hl, B.O. Jacobson, A lubricant model considering wall-slip in EHL line contacts, J. Trib., 125(3) (2003) 523-532.
[28] B. Jacobson, B. Hamrock, Non-Newtonian fluid model incorporated into elastohydrodynamic lubrication of rectangular contacts, ASME journal of tribology, 106(2) (1984) 275-282.
[29] R.-T. Lee, B. Hamrock, A circular non-Newtonian fluid model: part I—used in elastohydrodynamic lubrication, ASME journal of tribology, 112(3) (1990) 486-495. | ||
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