|Table of Contents|

Surface texture optimization of journal bearing based on hybrid genetic algorithm(PDF)


Research Field:
Publishing date:


Surface texture optimization of journal bearing based on hybrid genetic algorithm
ZHANG Yong-fang12 LIU Cheng3 LI Sha3 LI Xian-wei12 YAN Dong3 LU Yan-jun3
1. School of Printing, Packaging Engineering and Digital Media Technology, Xi'an University of Technology, Xi'an 710048, Shaanxi, China; 2. State Key Laboratory of Mechanical Transmissions, Chongqing University, Chongqing 400044, China; 3. School of Mechanical and Precision Instrument Engineering, Xi'an University of Technology, Xi'an 710048, Shaanxi, China
internal combustion engine journal bearing surface texture numerical simulation crankshaft bearing mass conservation boundary condition genetic optimization
The spherical dimple texture was designed on the surface of journal bearing to improve the lubrication performance of crankshaft system in diesel engine. In order to maximize the load-carrying capacity and minimize the friction factor of the bearing, a hybrid evolutionary optimization method based on the sequential quadratic programming and the genetic algorithm was proposed, and an optimization model was developed for the journal bearing with spherical dimple texture. The distribution location and geometry parameters of dimple texture were globally optimized to obtain the optimal angle and maximum depth of texture under given working condition. In order to solve the load-carrying capacity and friction factor of journal bearing, the influence of surface roughness on oil flow was considered, a mass-conservation JFO(Jakobsson, Floberg, Olsson)cavitation algorithm was used to address the rupture and reformulation of oil film, and a mixed lubrication model was developed based on average Reynolds equation and Greenwood-Tripp asperity contact equation. The influence of spherical dimple textures with various distribution locations and geometry parameters(number, area density, and maximum depth)on the load-carrying capacity and friction factor of journal bearing was investigated. Analysis result shows that the load-carrying capacity and friction factor are the monotonic functions of dimple area density. There exists optimal angle and maximum depth of dimple that can maximize the load-carrying capacity and minimize the friction factor. When the eccentricity rises from 0.3 to 0.7, the increment of load-carrying capacity changes from 13.38% to 0.62%, and the decrement of friction factor changes from 0.73% to negative value. Therefore, when the eccentricity is smaller, the spherical dimple texture can increase the load-carrying capacity and decrease the friction factor effectively, and when the eccentricity is larger, the spherical dimple texture is unbeneficial to decrease the friction factor of the bearing. 2 tabs, 15 figs, 26 refs.


[1] LIU Jun, MOCHIMARU Y. The effects of trapezoidal groove on a self-acting fluid-lubricated herringbone grooves journal bearing[J]. ISRN Tribology, 2013, 2013: 1-7.
[2] MUZAKKIR S M, HIRANI H, THAKRE G D. Lubricant for heavily loaded slow-speed journal bearing[J]. Tribology Transactions, 2013, 56(6): 1060-1068.
[3] GROPPER D, WANG Ling, HARVEY T J. Hydrodynamic lubrication of textured surfaces: a review of modeling techniques and key findings[J]. Tribology International, 2016, 94: 509-529.
[4] RAO T V V L N, RANI A M A, NAGARAJAN T, et al. Analysis of micropolar and power law fluid-lubricated slider and journal bearing with partial slip-partial slip texture configuration[J]. Tribology Transactions, 2016, 59(5): 896-910.
[5] YU Ru-fei, LI Pei, CHEN Wei. Study of grease lubricated journal bearing with partial surface texture[J]. Industrial Lubrication and Tribology, 2016, 68(2): 149-157.
[6] ZHANG Jin-yu, MENG Yong-gang. A study of surface texturing of carbon steel by photochemical machining[J]. Journal of Materials Processing Technology, 2012, 212(10): 2133-2140.
[7] MENG F M, ZHANG L, LONG T. Effect of groove textures on the performances of gaseous bubble in the lubricant of journal bearing[J]. Journal of Tribology, 2017, 139(3): 1-11.
[8] JI Jing-hu, FU Yong-hong, BI Qin-sheng. Influence of geometric shapes on the hydrodynamic lubrication of a partially textured slider with micro-grooves[J]. Journal of Tribology, 2014, 136(4): 1-8.
[9] KANGO S, SINGH D, SHARMA R K. Numerical investigation on the influence of surface texture on the performance of hydrodynamic journal bearing[J]. Meccanica, 2012, 47(2): 469-482.
[10] DADOUCHE A, CONLON M J. Operational performance of textured journal bearings lubricated with a contaminated fluid[J]. Tribology International, 2016, 93: 377-389.
[11] MUZAKKIR S M, HIRANI H, THAKRE G D. Experimental investigations on effectiveness of axial and circumferential grooves in minimizing wear of journal bearing operating in mixed lubrication regime[J]. International Journal of Current Engineering and Technology, 2015, 5(1): 486-489.
[12] ADATEPE H, BIYIKLIOGLU A, SOFUOGLU H. An investigation of tribological behaviors of dynamically loaded non- grooved and micro-grooved journal bearings[J]. Tribology International, 2013, 58: 12-19.
[13] ASHIHARA K, HASHIMOTO H. Theoretical modeling for microgrooved journal bearings under mixed lubrication[J]. Journal of Tribology, 2010, 132(4): 1-16.
[14] LIU Fu-xi, LU Yan-jun, ZHANG Qi-meng, et al. Load performance analysis of three-pad fixing pad aerodynamic journal bearings with parabolic grooves[J]. Lubrication Science, 2016, 28(4): 207-220.
[15] KHATRI C B, SHARMA S C. Influence of textured surface on the performance of non-recessed hybrid journal bearing operating with non-Newtonian lubricant[J]. Tribology International, 2016, 95: 221-235.
[16] WANG G R, ZHONG L, HE X, et al. Experimental study of tribological properties of surface texture on rock bit sliding bearings[J]. Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology, 2014, 228(12): 1392-1402.
[17] BRIZMER V, KLIGERMAN Y. A laser surface textured journal bearing[J]. Journal of Tribology, 2012, 134(3): 1-9.
[18] TALA-IGHIL N, FILLON M. A numerical investigation of both thermal and texturing surface effects on the journal bearings static characteristics[J]. Tribology International, 2015, 90: 228-239.
[19] CUPILLARD S, GLAVATSKIH S, CERVANTES M J. Computational fluid dynamics analysis of a journal bearing with surface texturing[J]. Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology, 2008, 222(2): 97-107.
[20] ZHANG Hui, DONG Guang-neng, HUA Meng, et al. Parametric design of surface textures on journal bearing[J]. Industrial Lubrication and Tribology, 2015, 67(4): 359-369.
[21] 刘 成,吕延军,李 莎,等.表面织构对曲轴轴承润滑性能的影响[J].交通运输工程学报,2017,17(3):65-74. LIU Cheng, LU Yan-jun, LI Sha, et al. Effects of surface texture on tribological performance of crankshaft bearing[J]. Journal of Traffic and Transportation Engineering, 2017, 17(3): 65-74.(in Chinese)
[22] KANGO S, SHARMA R K, PANDEY R K. Thermal analysis of microtextured journal bearing using non-Newtonian rheology of lubricant and JFO boundary conditions[J]. Tribology international, 2014, 69: 19-29.
[23] PATIR N, CHENG H S. An average flow model for determining effects of three-dimensional roughness on partial hydrodynamic lubrication[J]. Journal of Lubrication Technology, 1978, 100(1): 12-17.
[24] WANG Y S, WANG Q J, LIN C, et al. Mixed lubrication of coupled journal-thrust-bearing systems including mass conserving cavitation[J]. Journal of Tribology, 2003, 125(4): 747-755.
[25] HAJJAM M, BONNEAU D. A transient finite element cavitation algorithm with application to radial lip seals[J]. Tribology International, 2007, 40(8): 1258-1269.
[26] MORRIS N, RAHMANI R, RAHNEJAT H, et al. Tribology of piston compression ring conjunction under transient thermal mixed regime of lubrication[J]. Tribology International, 2013, 59: 248-258.


Last Update: 2017-08-05