The Resource of Movable Sealing Joints with the O-Ring Seal
Vyacheslav V. Kuznetsov
Introduction. The problem of reliability of hydraulic drives sealing joints remains unsolved. However, the current level of computer modeling tools development allows us to solve effectively the problems of their longevity by replacing laborious experiments with high-performance computing. This paper presents the results of the approbation of the author's methodology for realizing computational approaches to determining the life of sealing joints on the basis of circular cross-section seal of hydraulic booster for MTZ (Minsk Tractor Works) tractors.
Materials and Methods. The determination of mobile sealing joints resource is based on the author's methodology, which used ANSYS for realizing a series of accelerated loading cycles that simulates real operating conditions. The developed models consider the processes of wearing, relaxation and hydrodynamic effects acting in a sealing joint.
Results. The use of the finite element modeling tools made it possible to determine the change in the stress-strain state of the power steering tightener in MTZ tractors during operation. The mechanism of joint tightness restoration on the basis of self-packing effect is revealed. The comparison of the forms of sections, obtained as a result of numerical and micrometer studies, confirms the effectiveness of the proposed methodology and the adequacy of the results obtained. The analysis of the obtained graphs shows that under normal operating conditions, the life of the sealing joint “cylinder ‒ piston” and “rod ‒ cover” is 2 and 1.12 years respectively, and as the temperature and pressure of the hydraulic fluid increase, decreases exponentially.
Conclusions. The results of the study show the high efficiency of the author's methodology. This technique can be used in researches to determine the resource and criteria for the leak-tightness of sealing joints. The graphs of the dependence of the sealing joints life on temperature and hydraulic pressure allow companies, specializing in the creation and repair of hydraulic drives, to develop schedules of preventive measures for their maintenance considering a complex of operational factors.
Keywords: seal, O-ring, hydraulic drive, reliability, life, service life, wear, relaxation, ANSYS, finite element analysis
Acknowledgements: The study was supported by the Russian Foundation for Basic Research and the Government of the Republic of Mordovia in the framework of the project “Obtaining and research of new composite polymeric materials containing finely dispersed and nanosized modifiers for machine tribo-conjugation elements” (Grant No. 18- 48-130007а_р).
For citation: Kuznetsov V. V. The Resource of Movable Sealing Joints with the
O-Ring Seal. Vestnik Mordovskogo universiteta = Mordovia University Bulletin. 2018; 28(4):562–582. DOI: https://doi.org/10.15507/0236-2910.028.201804.562-582
The author has read and approved the final version of the paper.
Received 12.09.2018; revised 19.10.2018; published online 28.12.2018
1. Zhang Y., Shi J., Wang S., Zhang C., Tomovic M. M. Sealing mechanism and failure analysis of actuator reciprocating seal. In: 2016 IEEE 11th Conference on Industrial Electronics and Applications (ICIEA). Hefei: IEEE; 2016. P. 2190–2195.
2. Svinyakov D. S., Tolstukhin G. N. Forecasting the reliability of seals of hydraulic cylinders. Elektronnyy nauchnyy zhurnal = Electronic Scientific Journal. 2016; 9(12):149–153. (In Russ.)
3. Burenin V. V. New seals for the moving joint of hydraulic power cylinders. Russian Engineering Research. 2011; 31(10):1036–1038.
4. Mamaev O., Mashkov Yu., Kosarenko R., Pivovarov V. Durability of a polymer composite material and service life of packing elements of contact movable sealing devices. Journal of Friction and Wear. 2008; 29(2):127–132.
5. Burenin V. V. New designs of seals for movable connections of power hydraulic cylinders of the volume hydraulic drive of construction machines and mechanisms. Mekhanizatsiya stroitelstva = Mechanization of Construction. 2012; 1:10–14.
6. Flitney R. Seals and Sealing Handbook : 6th Ed. Butterworth–Heinemann; 2014. 633 p.
7. Bhaumik S., Kumaraswamy A., Guruprasad S., Bhandari P. Study of effect of seal profile on tribological characteristics of reciprocating hydraulic seals. Tribology in Industry. 2015; 37(2):264–274.
8. Cao X., Zhang C., Zou B., Li L. Sealing performances research on PTFE rotating seal under deep-sea environment. The Open Mechanical Engineering Journal. 2015; 9:475–482.
9. Wang C., Qin Y., An Q. Finite element analysis for the rubber O-ring in a mechanical seal. Journal of East China University of Science and Technology. 2013; 39(6):761–767.
10. Lu T., Wang W., Chen L. A study of the performance of an O-ring seal with viscoelasticity. Journal of Beijing University of Chemical Technology (Natural Science Edition). 2014; 6:93–97.
11. Hu D., Wang R., Ren Q., Hong J. Investigation of design parameters and failure criteria of O-ring seal structure. In: ASME Turbo Expo: Power for Land, Sea, and Air. 2005; 4:405–412.
12. Yang B., Salant R. F. A numerical model of a reciprocating rod seal with a secondary lip. Tribology Transactions. 2008; 51(2):119–127.
13. Stupkiewicz S., Marciniszyn A. Elastohydrodynamic lubrication and finite configuration changes in reciprocating elastomeric seals. Tribology International. 2009; 42(5):615–627.
14. Aissaoui H., Diany M., Azouz J. Numerical simulation of radial and axial compressed elastomeric o-ring relaxation. Global Journal of Researches in Engineering Mechanical and Mechanics Engineering. 2012; 12(4):1–5.
15. Niu S. Sealing performance analysis of rubber O-ring in static seal based on FEM. International Journal of Engineering and Advanced Research Technology. 2015; 1(2):32–34.
16. Diany M., Aissaoui H. Finite element analysis for short term O-ring relaxation. Jordan Journal of Mechanical and Industrial Engineering. 2011; 5(6):478–482.
17. Zhang G., Zeng Z. Simulation of sealing performance of elastomeric O-ring gasket including metal skeleton. Applied Mechanics and Materials. 2014;
18. Liao C., Huang W., Wang Y., Suo S., Liu Y. Fluid-solid interaction model for hydraulic reciprocating O-ring seals. Chinese Journal of Mechanical Engineering. 2013; 26(1):85–94.
19. Yang Y., Tengyue H., Chenhui Z., Zhi B., Lihua M. Element analysis and wear longevity calculation of an O-ring in the actuator cylinder of a certain aircraft landing gear. In: 2017 Prognostics and System Health Management Conference (PHM-Harbin). Harbin: IEEE, 2017. P. 1–4.
20. Wang Z. Predicting wear in radial seals. ANSYS Advantage. 2008; 2(1):27.
21. Cui T., Lin C.-W., Chien C. H., Chao Y. J., Van Zee J. W. Service life estimation of liquid silicone rubber seals in polymer electrolyte membrane fuel cell environment. Journal of Power Sources. 2011; 196(3):1216–1221.
22. Lehr D., Furlan W. Seal life prediction and design reliability in downhole tools. SPE Annual Technical Conference and Exhibition. SPE; 2017.
23. Liao B., Sun B., Yan M., Ren Y., Zhang W., Zhou K. Time-variant reliability analysis for rubber O-ring seal considering both material degradation and random load. Materials. 2017; 10(10):1211.
24. Lijesh K., Muzakkir S. Service life estimation of rubber seals. International Journal of Applied Engineering Research. 2016; 11(2):980–986.
25. Borisov V. I., Kuznetsov V. V., Vodyakov V. N. Tribological properties of hydraulic cylinders’ sealings polymer materials. Traktory i selkhozmashiny = Tractors and Agricultural Machines. 2012; 2:40–43.
This work is licensed under a Creative Commons Attribution 4.0 License.