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modelling of a rotary lip seal

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Old   April 14, 2014, 04:43
Lightbulb modelling of a rotary lip seal
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jw-2014
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Hi all,

I am trying to model a lubricated rotary lip seal mounted on a rotating shaft. I am struggling to decide on decide which way is best to model the system.

I suspect the analyis would need to be carried out in 3D as the shaft is rotating in the radial direction but the lubricant is acting on both sides of the lip seal, and the contact band width changes during the process. I anticipate that this analysis would include non-linear boundaries, large deformations, and moving mesh.

I would appreciate it if someone could point me in the right direction to start the analysis.

Kind Regards,
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Old   April 19, 2014, 11:10
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Troy Snyder
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I would strongly suggest a quick literature review to point you in the right direction. There are a range of strategies and assumptions made in developing numerical models for lip seals such as the choice of fluid domain solution, Reynolds Eqn. vs. Navior-Stokes, or the type of solid deformation model, just as an example.

The solution approach should be guided based upon on what pertinent details are to extracted from the numerical model, i.e. leakage rates, damping coefficients, etc.
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