Topology optimization of liquid lubricating zero-leakage mechanical face seals

Meng, Xiangkai; Tu, Zhirong; Yi, Ma; Jiang, Jinbo; Peng, Xudong

doi:10.1016/j.triboint.2022.107490

Cited by 16 publications

(14 citation statements)

References 28 publications

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“…Subsequently, Cheng et al [24] claimed that stiffness and leakage characteristics are highly related to the geometry of grooves. Based on this, various groove shapes, including square, herringbone, circle, have been used to improve the sealing performance [25][26][27]. However, the leakage is limited by its complex structure, space size, and use conditions.…”

Section: Introductionmentioning

confidence: 99%

Co-optimization for hydrodynamic lubrication and leakage of V-shape textured bearings via linear weighting summation

Guo,

Ding,

Wang

et al. 2023

Phys. Scr.

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In this study, the linear weighting summation method is adopted for the co-optimization of V-shape textured bearings to maximize the load-carrying capacity and minimize the leakage and friction. Optimal parameters including texture angle and depth and ratio of the texture width are identified based on the established numerical model. Moreover, to improve the comprehensive performance, especially leakage reduction, two profile modifications are introduced: micro-slope and micro-step. The results show that the two proposed modifications are effective for improving the comprehensive performance of V-shape textured journal bearings, and optimal values exist for both the modifications. Furthermore, the overall performance of a bearing with micro-step modification is superior to that of a bearing with micro-slope modification, but the bearing with micro-slope modification is more sensitive to leakage. In summary, this study aims to provide theoretical foundation for the multi-objective optimization design of V-shape textured bearings.

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Section: Introductionmentioning

confidence: 99%

Co-optimization for hydrodynamic lubrication and leakage of V-shape textured bearings via linear weighting summation

Guo,

Ding,

Wang

et al. 2023

Phys. Scr.

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“…1,2 Low leakage and friction of end faces can be obtained by liquid film seals with herringbone grooves that consist of an inner groove and an outer spiral groove. 3,4 For the non-contacting liquid film seal, the dynamic characteristics of the liquid film directly impact the sealing performance. Shaft drifting, vibration, and primary ring's misalignment weaken the stability of the liquid film and result in the excessive leakage and rubbing rotor.…”

Section: Introductionmentioning

confidence: 99%

“…1,2 Low leakage and friction of end faces can be obtained by liquid film seals with herringbone grooves that consist of an inner groove and an outer spiral groove. 3,4…”

Section: Introductionmentioning

confidence: 99%

Dynamic characteristics of a non-Newtonian lubrication mechanical seal with herringbone grooves considering cavitation effect

Liu,

Yu,

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part J:

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This research investigated the effect of lubricant's non-Newtonian properties on dynamic characteristics of a herringbone grooved liquid film seal (HG-LFS) considering cavitation. A modified steady-state perturbation Reynolds equation of the non-Newtonian was derived. Visualized experiments were conducted to verify the accuracy of calculations. The non-Newtonian effect on stiffness, cavitation, damping coefficients, and other sealing performance of the liquid film seal at different velocity, pressure and film thickness were discussed and analyzed. The results indicate that the seal has larger stiffness and damping coefficients with the dilatant lubricant, the cavitation can be inhibited by the shearing-thinning lubricant, and the impact of non-Newtonian on the seal stability decreases with the increase of film thickness. This study would contribute to the design and theoretical research of liquid film seals.

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“…Consequently, it can reduce the friction and wear, and thus improve the service life of the sealing ring. 1 In the mechanical lubrication, many studies have shown that the exquisite texture design on the contact surface can improve the bearing capacity, reduce the friction and wear, and enhance the hydrodynamic pressure. [2][3][4][5][6] In order to find the optimal surface textures, some studies have been conducted through theoretical and experimental approaches, and discussed the influence factors, such as texture shape, structure and size to maximize the load carrying capacity (LCC), and enhance the performances of parts.…”

Section: Introductionmentioning

confidence: 99%

“…Consequently, it can reduce the friction and wear, and thus improve the service life of the sealing ring. 1…”

Section: Introductionmentioning

confidence: 99%

Texture shape optimization induced higher load carrying capacity of sealing ring based on improved PSO algorithm

Gong

Xing

Jiao³

2022

Proceedings of the Institution of Mechanical Engineers, Part J:

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An improved particle swarm optimization (PSO) algorithm is presented to optimize the texture shape of the sealing ring in order to enhance the load carrying capacity (LCC). The shape optimization uses the unrelated generation method of the texture curves, and two splines are applied to fit the boundary of the texture to improve the continuity. The inertia factor is adjusted through the differential strategy to enhance the local optimization capacity. The optimization model is verified by two optimization cases. The optimized texture is bullet-shaped. The increase of inlet oil pressure transforms the optimized texture from the bullet shape to the inner spiral shape. In addition, the increase of the texture depth leads to the gradual elongation of the texture shape. The increase in the number of textures flattens the seal texture. The results shows that the improved PSO algorithm has high global optimization ability of the texture shape for the sealing ring in the vehicle transmission through appropriate parameter settings.

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Topology optimization of liquid lubricating zero-leakage mechanical face seals

Cited by 16 publications

References 28 publications

Co-optimization for hydrodynamic lubrication and leakage of V-shape textured bearings via linear weighting summation

Co-optimization for hydrodynamic lubrication and leakage of V-shape textured bearings via linear weighting summation

Dynamic characteristics of a non-Newtonian lubrication mechanical seal with herringbone grooves considering cavitation effect

Texture shape optimization induced higher load carrying capacity of sealing ring based on improved PSO algorithm

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