Investigation on transient response of gas face seals based on a double mass kinematic model considering Coulomb friction

Teng, Liming; Jiang, Jinbo; Peng, Xudong; Wu, Fan; Zhao, Wenjing; Li, Jiyun

doi:10.1007/s40430-024-05020-8

J Braz. Soc. Mech. Sci. Eng.

2024

DOI: 10.1007/s40430-024-05020-8

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Investigation on transient response of gas face seals based on a double mass kinematic model considering Coulomb friction

Liming Teng,

Jinbo Jiang,

Xudong Peng

et al.

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2024

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References 34 publications

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Influence of separation, collision and friction of rotating ring in sleeve on vibration characteristics of gas face seals

Teng,

Jiang,

Peng

et al. 2024

ILT

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Purpose This study aims to understand how the assembly of rotating ring affects the axial forced vibration of gas face seals. Design/methodology/approach A three-mass kinematic model is established to investigate the axial movement of the rotating ring with bilateral constraints. The separation, collision and frictional sliding of the rotating ring in sleeve are discussed under rotor excitation. The effects of operating parameters and O-ring dynamic characteristics on the separation degree and film thickness disturbance are analyzed. A dimensionless axial characteristic force is defined to determine the critical conditions for the occurrence of separation. Several effective methods to eliminate the separation are proposed based on the adjustment of typical installation parameters. Findings Under rotor excitation, there may be two collisions between the rotating ring and the sleeve surfaces in one excitation period. This will cause self-excited vibration of the fluid film, increasing the risk of seal failure. The separation and collision can be prevented by increasing the equilibrium ratio, the installation radius of the O-ring on the outer surface of the rotating ring and the friction in the sleeve. Originality/value The results develop the modeling of multibody dynamics of gas face seals, enabling more accurate prediction of vibration characteristics.

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Influence of separation, collision and friction of rotating ring in sleeve on vibration characteristics of gas face seals

Teng,

Jiang,

Peng

et al. 2024

ILT

View full text Add to dashboard Cite

show abstract

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Investigation on transient response of gas face seals based on a double mass kinematic model considering Coulomb friction

Cited by 1 publication

References 34 publications

Influence of separation, collision and friction of rotating ring in sleeve on vibration characteristics of gas face seals

Influence of separation, collision and friction of rotating ring in sleeve on vibration characteristics of gas face seals

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