Multiscale simulation on dynamic friction behavior of cylinder sealing rings under hydrothermal aging

Luo, Hang; Wu, Jian; Teng, Fei; Su, Benlong; Li, Haohao; Lin, Ange; Li, Zhe; Wang, Youshan

doi:10.1002/app.50453

Cited by 5 publications

(3 citation statements)

References 19 publications

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“…Azzi et al [7] studied the influence of different sealing elements and operating parameters on the frictional force of sealing elements. Luo et al [8] conducted a simulation of the frictional behavior of the cylinder seal, combining the analysis results with the experimental results to reveal the dynamic changes of the seal caused by friction. Yakovlev [9] provided a detailed experimental setup to study the wear of lip seals in frictional contact with rotating shafts.…”

Section: Introductionmentioning

confidence: 99%

Analysis and Key Parameter Optimization Design of Leningrader Seal Performance

YANG,

WANG,

WANG

et al. 2024

Wuhan Univ. J. Nat. Sci.

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In order to improve the performance and service life of the Leningrader seal of the Stirling engine piston rod, interference, preload and friction coefficient were taken as influencing factors, and the curved surface response method was adopted to reduce the contact stress of sealing surface and von Mises stress of the sealing sleeve as the response index, with the optimization goal of reducing wear and extending life. The above three key parameters are analyzed and optimized, the influence of each parameter on the sealing performance and service life is obtained, and the best combination scheme of the three is determined. The results show that the interaction between pretightening force and interference fit has the greatest impact on contact stress. The interaction between interference fit and friction coefficient has the most significant effect on von Mises stress. The optimized parameters can reduce the maximum contact stress and maximum von Mises stress of the sealing sleeve by 26.3% and 20.6%, respectively, under a media pressure of 5-9 MPa. Test bench verification shows that the leakage of the optimized sealing device in 12 h is reduced by 0.44 cc·min-1 (1 cc=1 cm3). The wear rate of the sealing sleeve is 1.08% before optimization and 0.45% after optimization, indicating that the optimized parameters in this paper are effective.

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Section: Introductionmentioning

confidence: 99%

Analysis and Key Parameter Optimization Design of Leningrader Seal Performance

YANG,

WANG,

WANG

et al. 2024

Wuhan Univ. J. Nat. Sci.

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“…He et al [ 33 ] investigated the tribological performance of CeO 2 blended rubber after aging and showed that the increase in crosslink density at the beginning of thermal aging could effectively improve its tribological performance. Luo et al [ 34 ] found that the friction and contact pressure of NBR seals increased with the increase in temperature during hydrothermal aging.…”

Section: Introductionmentioning

confidence: 99%

Effect of Hydrothermal Aging on the Tribological Performance of Nitrile Butadiene Rubber Seals

Huang,

Chen,

et al. 2023

Polymers

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High temperature and humidity affect the tribological performance of nitrile butadiene rubber (NBR) seals, which affects the precise positioning of cylinder systems. Therefore, it is crucial to study the effect of hydrothermal aging on the tribological performance of the NBR seals. In this study, the changes in the tribological performance of the NBR seals under hydrothermal aging conditions were investigated. The results show that the volatilization of additives and the increase in crosslink density of the NBR seals occurs in the hydrothermal aging environment, leading to the deterioration of their surface quality, elastic deformability, and tribological performance. The formation of surface micropores due to additive volatilization is the main factor in the degradation of tribological performance.

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“…Sang et al [14] employed a method of measuring the axial rod friction in a triaxial apparatus by combining a numerical method with an experimental method. Luo et al [15] conducted a multi-scale simulation analysis on the friction behavior of cylinder seal rings in a cylinder, and by combining the analysis with the experimental results, revealed dynamic changes in the seal ring caused by friction. Kaushal et al [16] studied the influence of geometry on the sealing characteristics of V-seal and provided a structural optimization design.…”

Section: Introductionmentioning

confidence: 99%

Investigation into the Influence of Parallel Offset Wear on Stirling Engine Piston Rod Oil-Free Lubrication Seal

et al. 2022

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The oil-free lubrication seal of a piston rod plays an important role in the application of a Stirling engine. Parallel offset in a piston rod ruins the symmetry of the seal and affects the sealing performance when the seal is worn. In this paper, based on a motion analysis and the finite element method, a three-dimensional model of the Cap-seal was established, and its performance was numerically and experimentally investigated. The results show that parallel offset of the piston rod increases the possibility of seal damage and has no obvious effect on leakage. Under high pressures and low pre-compression ratios, the Cap-seal shows a good sealing capability and exhibits a higher propensity for mechanical damage. A good agreement was obtained between the numerical and experimental results. This study offers guidelines regarding the design and application of oil-free lubrication seals for a Stirling piston rod.

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Multiscale simulation on dynamic friction behavior of cylinder sealing rings under hydrothermal aging

Cited by 5 publications

References 19 publications

Analysis and Key Parameter Optimization Design of Leningrader Seal Performance

Analysis and Key Parameter Optimization Design of Leningrader Seal Performance

Effect of Hydrothermal Aging on the Tribological Performance of Nitrile Butadiene Rubber Seals

Investigation into the Influence of Parallel Offset Wear on Stirling Engine Piston Rod Oil-Free Lubrication Seal

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