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access icon openaccess Numerical simulation model of a reciprocating seal based on the mixed-lubrication theory

This is an open access article published by the IET under the Creative Commons Attribution License (http://creativecommons.org/licenses/by/3.0/)
Received 28/09/2018, Accepted 12/10/2018, Published 19/10/2018

Based on the mixed-lubrication theory, a numerical simulation model of a reciprocating seal is established. The model includes finite element, fluid mechanics, contact mechanics and deformation mechanics analyses. The hydrodynamic analysis uses elastohydrodynamic lubrication theory and inverse hydrodynamic lubrication to obtain the relationship between fluid pressure and film thickness, while the contact mechanics analysis obtains the relationship between the asperity contact pressure and film thickness. The influence of the coefficient matrix and static contact pressure is calculated by the finite element analysis. The coupling relationship among the fluid pressure, asperity contact pressure and static contact pressure is provided by the influence coefficient method of the deformation mechanics analysis. The calculation results of the numerical model are verified by experimental results, which are measured by the bench test developed by the authors.

Inspec keywords: mechanical contact; lubrication; seals (stoppers); numerical analysis; hydrodynamics; finite element analysis; deformation

Other keywords: numerical simulation model; contact mechanics analysis; deformation mechanics analyses; inverse hydrodynamic lubrication; hydrodynamic analysis; static contact pressure; finite element analysis; coupling relationship; mixed-lubrication theory; deformation mechanics analysis; numerical model; elastohydrodynamic lubrication theory; asperity contact pressure; film thickness; fluid pressure; reciprocating seal; fluid mechanics

Subjects: Tribology (mechanical engineering); Fluid mechanics and aerodynamics (mechanical engineering); Numerical analysis; Numerical approximation and analysis; Engineering materials; Mechanical components

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