A New Star-Like SurfaceTexture for Enhanced Hydrodynamic Lubrication Performance

• Autorzy: Uddin M. S. , Liu Y. W. , Shankar S.

Identyfikatory

DOI

10.1515/amm-2017-0282

• Języki publikacji: EN

Abstrakty

EN

This paper presents a numerical modelling and optimization of a new ‘star-like’ geometric texture shape with an aim to improve tribological performance. Initial studies showed that the triangle effect is the most dominant in reducing the friction. Motivated with this, a ‘star-like’ texture shape consisting of a series of triangular spikes around the centre of the texture is proposed. It is hypothesised that by increasing the triangular effect on a texture shape, the converging micro-wedge effect is expected to increase, hence increasing the film pressure and reducing the friction. Using the well-known Reynolds boundary conditions, numerical modelling of surface texturing is implemented via finite difference method. Simulation results showed that the number of apex points of the new ‘star-like’ texture has a significant effect on the film pressure and the friction coefficient. A 6-pointed texture at a texture density of 0.4 is shown to be the optimum shape. The new optimum star-like texture reduces the friction coefficient by 80%, 64.39%, 19.32% and 16.14%, as compared to ellipse, chevron, triangle and circle, respectively. This indicates the potential benefit of the proposed new shape in further enhancing the hydrodynamic lubrication performance of slider bearing contacts.

Słowa kluczowe

EN

surface texturing; friction; film pressure; numerical modelling; Reynolds equation

• Wydawca: Institute of Metallurgy and Materials Science of Polish Academy of Sciences ; Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences
• Czasopismo: Archives of Metallurgy and Materials
• Rocznik: 2017
• Tom: Vol. 62, iss. 3
• Strony: 1863--1869
• Opis fizyczny: Bibliogr. 14 poz., rys., tab., wykr.

Twórcy

autor

Uddin M. S.

• School of Engineering, University of South Australia, Mawson Lakes, Sa 5095, Australia

autor

Liu Y. W.

• School of Engineering, University of South Australia, Mawson Lakes, Sa 5095, Australia

autor

Shankar S.

• Department of Mechatronics Engineering, Kongu Engineering College, Erode, Tamilnadu, India

Bibliografia

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• [11] C. Shen, M. M. Khonsari, Tribol. Int. 82, 1-11 (2014).
• [12] Y. L. Zhang, X. G. Zhang, G. Matsoukas, Biosurface Biotribology 1, 270-277 (2015).
• [13] I. Syed, M. Sarangi, 16th National Conference on Machines and Mechanisms (iNaCoMM-2013), India, 850-856 (2013).
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Uwagi

PL

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).