Effect of grooved shaft on the rotary lip seal performance in transient condition: Elasto-hydrodynamic simulations

Gadari, M’hammed El; Fatu, Aurelian; Hajjam, Mohamed

doi:10.1016/j.triboint.2015.09.031

Cited by 19 publications

(25 citation statements)

References 10 publications

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“…where y b represents the location of the maximum dry contact pressure (results of structural analysis with the commercial simulation software Abaqus, as presented in references [6,11]), as illustrated in Figure 5. Likewise: L11 is the lip asperity number throw on the x axis, L12 is the asperity lip number according to the y-direction.…”

Section: Comparison Of Numerical Results Between the Finite Volume Anmentioning

confidence: 99%

“…Referring to previous researches, textures can significantly improve seal performance and durability in terms of load carrying capacity, wear resistance, friction, and face temperature. Jia et al [7] and El Gadari et al [6] proved that shaft grooves are an efficient and feasible method to control seal leakage.…”

Section: Functions Of Surface Texturesmentioning

confidence: 99%

“…Thus, in this section, a comparative study is presented between a transient hydrodynamic model, a transient elasto-hydrodynamic model [6], and experimental results [7] examining the groove depth impact on the pumping rate. between our method and the finite volume method performed by Shen [10] is 0.37% for the load support, 0.6% for the reverse pumping rate, and 2.4% for the active zone ratio.…”

Section: Functions Of Surface Texturesmentioning

confidence: 99%

Section: Functions Of Surface Texturesmentioning

confidence: 99%

“…Different researchers have also integrated this technique in investigations dealing with rotary lip seal in order to improve its functioning. Indeed, in the international literature, various works considered this issue by adopting different groove shapes for the seal [5] and the shaft with different texture shapes [6][7][8]. In this work, this technique will be adopted by considering a lip seal mounted on an oblique grooved shaft as shown in Figure 1.…”

Section: Introductionmentioning

confidence: 99%

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Numerical Investigation of Grooved Shaft Effects on the Rotary Lip Seal Performance with Relative Lip Motion

2019

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It is generally agreed that radial lip seals are used in systems with a rotating shaft and a stationary lip. However, according to previous work, it was demonstrated that relative motion between the shaft and the lip has substantial effects on the hydrodynamic lifting load and sealing performances. Nowadays, new generations of textured shafts have emerged in order to reduce friction torque and improve reverse pumping, but no study has confirmed the effect of the relative motion between the rough lip and the shaft grooves on the rotary lip seal performances. In this work, an isothermal hydrodynamic lubrication was performed in transient conditions to investigate the effect of the relative velocity between an oblique grooved shaft and a rough lip. After confirming the validity of the current model with respect to previous works, simulations have underlined the effect of the grooved shaft with relative lip motion on the rotary lip seal performance. Indeed, by keeping the same relative velocity between surfaces, it is shown that moving the shaft with a rate higher than that of the lip surface could produce an important reverse pumping and reduce the friction torque significantly, in comparison with cases where the shaft velocity is weaker.

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Section: Comparison Of Numerical Results Between the Finite Volume Anmentioning

confidence: 99%

Section: Functions Of Surface Texturesmentioning

confidence: 99%

Section: Functions Of Surface Texturesmentioning

confidence: 99%

Section: Functions Of Surface Texturesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Numerical Investigation of Grooved Shaft Effects on the Rotary Lip Seal Performance with Relative Lip Motion

2019

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Characterisation of the conveying effect of turned radial shaft seal counter-surfaces using a simplified hydrodynamic simulation model

Thielen

Subramanian

Sauer

et al. 2023

Forsch Ingenieurwes

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A typical sealing system for rotating shafts consists of the radial shaft sealing ring (RSS), the lubricant and the shaft counter-surface (SCS) of the rotating shaft. The properties of the machined surface of the SCS have an impact on the sealing system. The structural pattern of the SCS influences the lubricant flow along the axial direction. In this paper, a simplified micro scale hydrodynamic simulation model is presented in order to study and determine the axial flow of the lubricant induced by the SCS of the sealing system, isolated from the effects induced by the seal, to allow for a rating of the shaft surface. The influence of the seal was neglected to allow for a simplified simulation. Simulated shaft surfaces corresponding to different machining parameters of machined SCS are used as input. These variants of SCS were created using a kinematic model which simulates an ideal surface machining process of the shaft. A micro scale hydrodynamic simulation model is used to investigate the influence of machining parameters on the lubricant flow along the axial direction across the tribo-contact. From this investigation, the connection between parameters applied for machining of the SCS and conveying effects can be estimated. The simulation model is also validated with experimental results of hard turned shafts of different machining parameters. Differences between manufactured real surfaces and kinematically simulated surfaces are the cause of deviations between the results.

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Effect of Particle Size on Tribological Properties of Rubber/Steel Seal Pairs Under Contaminated Water Lubrication Conditions

Shen

et al. 2020

Tribol Lett

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Effect of grooved shaft on the rotary lip seal performance in transient condition: Elasto-hydrodynamic simulations

Cited by 19 publications

References 10 publications

Numerical Investigation of Grooved Shaft Effects on the Rotary Lip Seal Performance with Relative Lip Motion

Numerical Investigation of Grooved Shaft Effects on the Rotary Lip Seal Performance with Relative Lip Motion

Characterisation of the conveying effect of turned radial shaft seal counter-surfaces using a simplified hydrodynamic simulation model

Effect of Particle Size on Tribological Properties of Rubber/Steel Seal Pairs Under Contaminated Water Lubrication Conditions

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