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Research Papers: Other (Seals, Manufacturing)

Numerical Model of a Tandem Reciprocating Hydraulic Rod Seal

[+] Author and Article Information
Bo Yang, Richard F. Salant

George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA 30332-0405

J. Tribol 130(3), 032201 (Jun 20, 2008) (7 pages) doi:10.1115/1.2908924 History: Received September 11, 2007; Revised February 14, 2008; Published June 20, 2008

A numerical model of a tandem reciprocating hydraulic rod seal, consisting of two elastomeric U cup seals, has been constructed. It is applicable to cases in which the stroke length is significantly larger than the seal width. The model consists of coupled steady state fluid mechanics, deformation mechanics, and contact mechanics analyses, with an iterative computational procedure. The behaviors of the two seals are coupled through the pressure∕density in the interseal region and through flow continuity. Results for a typical tandem seal are compared to those of a single seal and a double lip seal.

Copyright © 2008 by American Society of Mechanical Engineers
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References

Figures

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Figure 1

Schematic of tandem seal

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Figure 3

Computational procedure

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Figure 4

Fluid transport versus roughness, tandem seal

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Figure 5

Fluid transport versus roughness, double lip seal

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Figure 6

Fluid transport versus roughness, single lip seal

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Figure 7

Inter-seal pressure versus roughness

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Figure 8

Deformed seal shapes, 0.3μm roughness

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Figure 9

Friction force versus roughness, tandem seal

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Figure 10

Friction force versus roughness, double lip seal

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Figure 11

Friction force versus roughness, single lip seal

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Figure 20

Pressure distributions, outstroke, outer seal, 0.3μm roughness

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Figure 23

Pressure distributions, instroke, outer seal, 0.8μm roughness

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Figure 22

Pressure distributions, outstroke, outer seal, 0.8μm roughness

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Figure 21

Pressure distributions, instroke, outer seal, 0.3μm roughness

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Figure 19

Film thickness distributions, outer seal, 0.8μm roughness

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Figure 18

Film thickness distributions, outer seal, 0.3μm roughness

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Figure 17

Pressure distributions, instroke, inner seal, 0.8μm roughness

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Figure 16

Pressure distributions, outstroke, inner seal, 0.8μm roughness

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Figure 15

Pressure distributions, instroke, inner seal, 0.3μm roughness

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Figure 14

Pressure distributions, outstroke, inner seal, 0.3μm roughness

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Figure 13

Film thickness distributions, inner seal, 0.8μm roughness

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Figure 12

Film thickness distributions, inner seal, 0.3μm roughness

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