Numerical Model of a Reciprocating Hydraulic Rod Seal

Salant, Richard F.; Maser, Nicholas; Yang, Bo

doi:10.1115/1.2401222

Cited by 115 publications

(75 citation statements)

References 12 publications

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“…Typical SEHL applications include, for example, different types of elastomeric seals, e.g., [15][16][17][18][19][20][21], elastomer bearings [22], and metering size press [23]. Shi and Salant [15] developed a deterministic mixed SEHL model, simulating the interface between a moving perfectly smooth rigid surface and a stationary rough perfectly elastic surface.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Elastomer Surface Texturing in Soft Elasto-Hydrodynamic Lubrication

2009

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The present study focuses on modeling the effect of elastomer surface texturing in soft elasto-hydrodynamic lubrication. The model consists of an elastomer with spherical microdimples sliding at a constant velocity relative to a rigid and smooth counterpart in the presence of viscous lubricant. The hydrodynamic lubrication and the elasticity problems are solved simultaneously for the cases of full and partial texturing of the elastomer surface. Load carrying capacity and friction force are evaluated by integration of the pressure and shear stress fields in the viscous lubricant, respectively. A parametric analysis is performed to obtain the optimum surface texturing parameters for maximum load and minimum friction.

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Section: Introductionmentioning

confidence: 99%

The Effect of Elastomer Surface Texturing in Soft Elasto-Hydrodynamic Lubrication

2009

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“…Considering that the predicted film thickness is in some cases well below 1 µm, the related effects can be significant if the influence of surface roughness is accounted for, for instance, using the flow-factor approach, cf. [3,9,21,25].…”

Section: Discussionmentioning

confidence: 99%

“…Prati and Strozzi [23], Salant et al. [25]. Nonlinear elasticity of an elastomeric seal has also been accounted for in a simplified model developed by Nikas and Sayles [19] for rectangular seals.…”

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confidence: 99%

Finite element treatment of soft elastohydrodynamic lubrication problems in the finite deformation regime

Stupkiewicz

2009

Comput Mech

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Soft elastohydrodynamic lubrication (EHL) problem is studied for a reciprocating elastomeric seal with full account of finite configuration changes. The fluid part is described by the Reynolds equation which is formulated on the deformed boundary of the seal treated as a hyperelastic body. The paper is concerned with the finite element (FE) treatment of this soft EHL problem. Displacement-based FE discretization is applied for the solid part. The Reynolds equation is discretized using the FE method or, alternatively, the discontinuous Galerkin method, both employing higherorder interpolation of pressure. The performance of both methods is assessed by studying convergence and stability of the solution for a benchmark problem of an O-ring seal. It is shown that the solution may exhibit spurious oscillations which occur in severe lubrication conditions. Mesh refinement results in reduction of these oscillations, while increasing the pressure interpolation order or application of the discontinuous Galerkin method does not help significantly.

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“…Prokop J et al [7] and Mao JF et al [8] analyzed the contact pressure of the PTEF oil seal and the combined oil seal using the finite element method respectively, whereas this method was not suitable for the lip seal. Salant RF et al [9] built the numerical model of reciprocating piston rod lip seal and researched the contact condition of lip seal. Choi HJ et al [10] achieved the optimum design of shock absorber lip seal structure by analyzing the contact area, stress and contact pressure distribution of the lip seal with the method of finite element analysis.…”

Section: Introductionmentioning

confidence: 99%

Simulation Analysis of Shock Absorber Lip Seal

2017

IJRTER

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Abstract-Shock absorber lip seal is a key component to guarantee the normal work of the shock absorber. To further study on the sealing performance of the shock absorber lip seal, this study firstly analyzed the structure and sealing theory of the shock absorber lip seal for determining factors that affect the sealing performance of the shock absorber at the stage of initial assembly, inner and outer stroke. Then, the simulation analysis of the shock absorber lip seal was carried out at the stage of initial assembly, inner and outer stroke. The results show that the Von Mises stress of the shock absorber lip seal is mainly concentrated on the lip and waist at the stage of initial assembly, inner and outer stroke, the maximum stress of inner and outer stroke are greater than of initial assembly, and the maximum stress of inner stroke is greater than of outer stroke. Moreover, the contact pressure distribution of shock absorber lip seal in the stage of initial assembly, inner and outer stroke are similar to the triangle, the maximum contact pressure of the inner and outer stroke are essentially equal, but less than the maximum contact pressure of initial assembly. These results coincided with the actual working condition of the shock absorber lip seal. The conclusions show that not only has great significance to the research of the shock absorber lip seal but also has an important reference value for researching on sealing performance of reciprocating oil seal.Keywords-shock absorber lip seal; contact pressure; Von Mises stress; initial assembly; insert outer stroke; inner stroke I. INTRODUCTION Shock absorber lip seal is an important part of the shock absorber, once the shock absorber lip seal failure can make shock absorber leakage and abnormal sound, and affect the vehicle comfort, stability and safety [1][2][3]. Many researchers have studied the sealing performance of the shock absorber lip seal. Müller HK et al. [4] and Suetsugu N et al. [5] investigated the sealing mechanism of the reciprocating oil seal, and proposed that lip seal volume was deformed and contact pressure occurred between the seal and the piston rod after the reciprocating oil seal was installed on the piston rod. Nikas GK [6] calculated the static contact pressure of the reciprocating rectangular oil seal for reducing the leakage and wear of oil seals. Prokop J et al. [7] and Mao JF et al. [8] analyzed the contact pressure of the PTEF oil seal and the combined oil seal using the finite element method respectively, whereas this method was not suitable for the lip seal. Salant RF et al. [9] built the numerical model of reciprocating piston rod lip seal and researched the contact condition of lip seal. Choi HJ et al. [10] achieved the optimum design of shock absorber lip seal structure by analyzing the contact area, stress and contact pressure distribution of the lip seal with the method of finite element analysis. By all accounts, the stress and contact pressure distribution of shock absorber lip seal have been studied, while the analysis ...

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Numerical Model of a Reciprocating Hydraulic Rod Seal

Cited by 115 publications

References 12 publications

The Effect of Elastomer Surface Texturing in Soft Elasto-Hydrodynamic Lubrication

The Effect of Elastomer Surface Texturing in Soft Elasto-Hydrodynamic Lubrication

Finite element treatment of soft elastohydrodynamic lubrication problems in the finite deformation regime

Simulation Analysis of Shock Absorber Lip Seal

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