Research on dynamic simulation method of leakage prediction for hydraulic system

Abstract

The dynamic simulation method of leakage prediction for hydraulic system is presented in this paper. A model is built for the method to analyze its composition and functions of the modules in it. Considering that there is friction between the seal and the rod, thermo-mechanical coupled method is applied to get the pressure distribution in the contacting region. The influence of the seal wear on the leakage is also included. A remeshing strategy based on the finite element technique is employed to simulate wear process. In order to find the inflection points precisely, a correction method based on hydrodynamic theory is used. Finally, the realization of the dynamic simulation method for the leakage prediction is given. To validate the simulation method, the simulation results are compared with the test results. The two results are in good agreement. The simulation method presented in this paper will be a reliable and time-saving one to predict the leakage for the hydraulic system.

Keywords

Wear hydrodynamic lubrication leakage prediction simulation thermo-mechanical coupled method finite element

Get full access to this article

View all access options for this article.

References

Mirshams

Sabbaghian

. Failure analysis of an elbow tube fitting. Eng Fail Anal 2003; 10(2): 215–221.

Nikas

. Eighty years of research on hydraulic reciprocating seals: Review of tribological studies and related topics since the 1930s. Proc IMechE, Part J: J Engineering Tribology 2010; 224: 1–23.

Hamrock

Schmid

Jacobson

. Fundamentals of fluid film lubrication, 2nd ed. New York: Marcel Dekker, 2004.

Blok

. Inverse problems in hydrodynamic lubrication and design directives for lubricated flexible surfaces, New York, USA: McCutchen Publishing Company, 1965.

Nikas

Sayles

. Modeling and optimization of composite rectangular reciprocating seals. J Eng Tribol 2006; 220: 395–412.

Salant

Maser

Yang

. Numerical model of a reciprocating hydraulic rod seal. J Tribol 2007; 129: 91–97.

Öngün

André

Bartel

. An axisymmetric hydrodynamic interface element for finite-element computations of mixed lubrication in rubber seals. J Eng Tribol 2008; 222: 471–481.

Stupkiewicz

Marciniszyn

. Elastohydrodynamic lubrication and finite configuration changes in reciprocating elastomeric seals. Tribol Int 2008; 42: 615–627.

Persson

BNJ

Scaraggi

. On the transition from boundary lubrication to hydrodynamic lubrication in soft contacts. J Phys 2009; 21: 185002–185002.

10.

Slawomir

Pawel

Jakub

. Parametric analysis of heat transfer in non-contacting face seals. Int J Heat Mass Transfer 2013; 57: 22–31.

11.

Zhang

. Tribology of elastomers tribology and interface engineering series, Amsterdam, The Netherlands: Elsevier, 2004, pp. 85–133.

12.

Karger-Kocsis

Mousa

Major

. Dry friction and sliding wear of EPDM rubbers against steel as a function of carbon black content. Wear 2008; 264: 359–367.

13.

Felhös

Karger-Kocsis

. Tribological testing of peroxide-cured EPDM rubbers with different carbon black contents under dry sliding conditions against steel. Tribol Int 2008; 41: 404–415.

14.

Meng

Ludema

. Wear models and predictive equations: Their form and content. Wear 1995; 181--183: 443–457.

15.

Archard

. Contact and rubbing of flat surface. J Appl Phys 1953; 24: 981–988.

16.

Pödra

Andersson

. Simulating sliding wear with finite element method. Tribol Int 1999; 32: 71–81.

17.

Nándor

Károly

Dávid

. Wear simulation of a reciprocating seal. J Tribol 2011; 133: 031601-1-6–031601-1-6.

18.

Gong

Komvopoulos

. Thermo-mechanical analysis of semi-infinite solid in sliding contact with a fractal surface. J Tribol 2005; 127(2): 331–342.

19.

Komvopoulos

. Three-dimensional finite element analysis of elastic-plastic layered media under thermomechanical surface loading. J Tribol 2003; 125(1): 52–59.

20.

Gong

Komvopoulos

. Mechanical and thermomechanical elastic-plastic contact analysis of layered media with patterned surfaces. J Tribol 2004; 126(1): 9–17.

21.

Uetz

Föhl

. Wear as an energy transformation process. Wear 1978; 49(2): 253–264.

22.

Li X, Peng GL, Wang Q, et al. A numerical analysis method of hydraulic seals for downhole equipments. Adv Mech Eng 2013. https://dx-doi-org.web.bisu.edu.cn/10.1155/2013/151794.

23.

Pōdra

Andersson

. Simulating sliding wear with finite element method. Tribol Int 1999; 32(2): 71–81.

24.

Rabinowicz

. Friction and wear of materials, New York: Wiley, 1995.

25.

Kanters

AFC

Verest

JFM

Visscher

. On reciprocating elastomeric seals: Calculation of film thicknesses using the inverse hydrodynamic lubrication theory. Tribol Trans 1990; 33: 301–306.

26.

Nikas

Sayles

. Study of leakage and friction of flexible seals for steady motion via a numerical approximation method. Tribol Int 2006; 39: 921–936.