The grooved lip effect on reciprocating hydraulic rod seal performances in transient condition: elastohydrodynamic lubrication

• Autorzy: Bahi Y. , El Gadari M. , Rahmoune M.

Identyfikatory

DOI

10.2478/ijame-2020-0017

• Języki publikacji: EN

Abstrakty

EN

It is commonly known that the sealing performance of dynamic seals is significantly influenced by the surface finish. To reduce friction effect and leakage ratio, new generations of grooved lip or shaft have emerged, but only two computational models were performed up to now with a textured elastomeric lip: spiral groove in the axial direction or micro-cavities according to the circumferential direction. However, if the numerical results have confirmed the slight effect of the grooved lip on the rotary lip seal performances, it seems relevant to investigate the influence of such grooves on the reciprocating hydraulic rod seal behavior. Thus, the scope of this work is to perform a parametric study of the grooved lip throughout a one-dimensional elastohydrodynamic model by taking into account the elasticity of the lip and the shaft roughness. After confirming the validity of the current model, numerical simulations have been performed and compared with experiments. The effect of lip grooves on the hydraulic rod seal behavior in outstroke and instroke shaft motion has been underlined. Thereby, it is shown that the leakage and the average film thickness are sensible to both the depth and the density of the lip groove. Additionally, a slight effect of the pattern shape is observed on the friction force.

Słowa kluczowe

EN

hydraulic rod seal; surface textured; roughness; friction force; leakage

PL

chropowatość; siła tarcia; wyciek

• Wydawca: Oficyna Wydawnicza Uniwersytetu Zielonogórskiego
• Czasopismo: International Journal of Applied Mechanics and Engineering
• Rocznik: 2020
• Tom: Vol. 25, no. 2
• Strony: 11--21
• Opis fizyczny: Bibliogr. 13 poz., tab., wykr.

Twórcy

autor

Bahi Y.

• Moulay Ismail UniversityHigh School of engineering ENSAM Meknes – Morocco

autor

El Gadari M.

• Moulay Ismail UniversityHigh School of engineering ENSAM Meknes – Morocco

autor

Rahmoune M.

• Moulay Ismail UniversityHigh School of engineering ENSAM Meknes – Morocco

Bibliografia

• [1] Lawrie J.M. and O'Donoghue J.P. (1964): The mechanism of lubrication in a reciprocating seal. − Proc.2nd, The British Hydromechanics Research Association (BHRA). International Conference on Fluid Sealing, B6.
• [2] Kanters A.C and Visscher M. (1989): Lubrication of reciprocating seals: experiments on the influence of surface roughness on friction and leakage.− 31th Leads-Lyon Symposium on Tribology.
• [3] Crudu M. (2012): Experimental and numerical study of the Hydraulic seals.− Doctoral Thesis 2012, University of Poitiers and University of Bucarest.
• [4] El Gadari M. and Hajjam M. (2017): Effect of the Grooved Rod on the Friction Force of U-Cup Hydraulic Rod Seal with Rough Lip. − Tribology Transactions, DOI:10.1080/10402004.2017.1388457.
• [5] Kanters A.F.C. (1990): On the calculation of leakage and friction of reciprocating elastomeric seals. − Doctoral Thesis: Technische Universiteit Eindhoven DOI: 10.6100/IR326313.
• [6] Bisztray-Balku S. (1999): Tribology of elastomeric and composite reciprocating hydraulic seals. − Institute for Machine Design Technical University of Budapest H–1521 Budapest, Hungary, Periodica Polytechnica Ser. Mech. Eng., vol.43, No.1, pp.63-80.
• [7] Salant R.F. and Yang B. (2008): Numerical modeling of reciprocating fluid power seals.− Proceedings of the 7th JFPS International Symposium on Fluid Power, TOYAMA 2008.
• [8] Thatte A. and Salant R.F. (2009): Transient EHL analysis of an elastomeric hydraulic seal.− Tribology International, vol.42, pp.1424-1432.
• [9] Elgadari M., Fatu A. and Hajjam M. (2016): Effect of grooved shaft on the rotary lip seal performance in transient condition: elasto-hydrodynamic simulations. − Tribology International, vol.93, pp.411-418.
• [10] Fei Guo, Xiao Hong Jia, Longke Wang and Yuming Wang (2016): The effect of axial position of contact zone on the performance of radial lip seals with a texturing shaft surface. − Tribology International, vol.97, pp.499-508.
• [11] Di Liu, Shaoping Wang, Chao Zhang and Mileta M. Tomovic (2019): Numerical study of the effects of textured shaft on the wear of rotary lip seals. − Tribology International, vol.138, pp.215-238.
• [12] Kligerman Y. and Shinkarenko A. (2011): The effect of tapered edges on lubrication regimes in surface-textured elastomer seals. − Tribology International, vol.44, pp.205-2066.
• [13] Yuli Huang and Salant R.F. (2016): Simulation of a hydraulic rod seal with a textured rod and starvation. −Tribology International, vol.95, pp.306-315.

Uwagi

PL

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2020)