A method for the characterization of static elastomeric lip seal deformation

Tasora, Alessandro; Prati, E.; Marin, T.

doi:10.1016/j.triboint.2012.10.025

Cited by 19 publications

(13 citation statements)

References 27 publications

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“…While there are methods to measure the sealing force of a radial seal [14], there is not a standard way to measure it when the seal and the shaft are offset. The overall reaction force to a set of radial misalignments were measured by Tasora [15] and Pinedo [16]. Their measurements show good agreement with the loads obtained using the Finite Elements (FE) models.…”

Section: Introductionmentioning

confidence: 76%

“…The contact force, contact area and pressure profile under the seal tip were predicted using the large strain theory and modelling the seal with the Saint Venant-Kirchoff constitutional material model with the properties listed in Table 1. The lack of axial symmetry of the loads required the use of a three-dimensional model [15,16]. Therefore, the axisymmetric approach presented in a previous publication of the authors [14] was extended along the circumferential direction.…”

Section: Methodsmentioning

confidence: 99%

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Misalignment-Induced Micro-Elastohydrodynamic Lubrication in Rotary Lip Seals

2020

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In literature the lubrication of rotary lip seals is explained by hydrodynamic action on a microscopic scale. This theory assumes perfect concentricity between the seal and the shaft which in reality seldomly occurs. Focusing on the stern tube seals application, an analysis is performed on the phenomena distorting the axisymmetric operation of rotary lip seals. Radial and angular shaft misalignments together with pressure and temperature gradients have been modelled. The model predictions are validated using a dedicated setup. Additionally, applying the soft-EHL film thickness expressions at the asperity level, an equivalent film thickness along the circumferential direction is estimated. The Reynolds PDE is solved to predict the misalignment-induced hydrodynamic pressure build-up. The film thickness variation derived and accompanying non-uniform contact pressure distribution was shown to be sufficient for hydrodynamic action and, depending on the minimum film thickness, the hydrodynamic pressure build-up can exceed the static contact pressure. Additionally, significant differences were observed between the radial and angular misalignment configurations.

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Section: Introductionmentioning

confidence: 76%

Section: Methodsmentioning

confidence: 99%

Misalignment-Induced Micro-Elastohydrodynamic Lubrication in Rotary Lip Seals

2020

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“…That approach has the advantage of allowing the diameter of the shaft to be varied. A non-destructive approach was presented by Tasora et al., 14 in which the seal could be directly characterized by measuring its response to the misalignment of the shaft.…”

Section: Introductionmentioning

confidence: 99%

“…The elastomer is often modeled by linear elastic 15 or hyperelastic constitutive models such as the Neo-Hookean 3 or the Mooney-Rivlin. 8,14,16 The Garter spring is usually modeled as a distributed radial load, 17 as an independent body with a fitted stiffness, 14 or using a concentrated spring load. 8,13 Wenk et al.…”

Section: Introductionmentioning

confidence: 99%

Stern tube seals under static condition: A multi-scale contact modeling approach

Borras

Bazrafshan

Rooij

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part J:

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A thermomechanical model of a stern tube seal has been developed by paying particular attention to the contact between the seal and the shaft. The finite element method is used to capture the macroscopic behavior of the seal while roughness was evaluated at a microscopic level by applying the boundary element method. The seal material was independently characterized, and the results were used to calibrate the material constitutive model used for the seal. Two specialized setups were built to validate the model in terms of radial force, contact width, and percolation threshold. By combining the two models, the strains, stresses, temperature, and the limits of static tightness can be predicted at high accuracy for a wide range of operating conditions.

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“…In view of hyper-elastic of rubber material, rubber seals are widely used for sealing different gaps such as reciprocating seals, 1,2 pump bearing seal, 3 rotary O-ring seals, 4 fuel cell, 5,6 etc. Although many studies about the mechanical behaviors of the rubber seal under different kinds of loading patterns have been reported, [7][8][9] the mechanical behaviors of the tubular rubber seal are rather complicated due to the large deformation under the small load and the complex contact, which are scarcely investigated. In fact, the tubular rubber seals are widely applied in many advanced seal structures 10 like temperature chamber door, car door, airplane door, aerofoil, and so on, which are involved in many special mechanical characterizations such as geometrical nonlinear, material nonlinear, large deformation, and the curved contact.…”

Section: Introductionmentioning

confidence: 99%

The compression and friction of tubular rubber seal under the curved surface loading

Yao

et al. 2016

Proceedings of the Institution of Mechanical Engineers, Part J:

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In this paper, the mechanical behaviors of the tubular rubber seal under the curved surface loading are studied by the experimental and finite element methods. First, both the compressive behaviors and the frictional performance of the tubular rubber seal under the plane loading are studied experimentally. Second, two-dimensional finite element model about the tubular rubber seal is established and the constitutive model parameters of the rubber seal material are extracted. Finally, the mechanical behavior of the tubular rubber seal under the curved surface loading is investigated by means of the approximation analysis method and the finite element simulation. The results indicate that the physical parameters based on the experiment and finite element method simulation of the tubular rubber seal under the plane loading can describe the mechanical behavior under the curved surface loading. Both the strain distribution of the tubular rubber seal and the driving torque are slightly influenced by the friction coefficient between the tubular rubber seal and the curved surfaces. The influence factor of the friction coefficient on the driving torque is proposed, which plays an important role in the design and evaluation of advanced tubular rubber seal.

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A method for the characterization of static elastomeric lip seal deformation

Cited by 19 publications

References 27 publications

Misalignment-Induced Micro-Elastohydrodynamic Lubrication in Rotary Lip Seals

Misalignment-Induced Micro-Elastohydrodynamic Lubrication in Rotary Lip Seals

Stern tube seals under static condition: A multi-scale contact modeling approach

The compression and friction of tubular rubber seal under the curved surface loading

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