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Theoretical investigation of transient elastohydrodynamic lubrication with newtonian solid‐liquid lubricants
Author(s) -
Mongkolwongrojn M.,
Thammakosol K.
Publication year - 2005
Publication title -
lubrication science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.632
H-Index - 36
eISSN - 1557-6833
pISSN - 0954-0075
DOI - 10.1002/ls.3010170308
Subject(s) - lubrication , materials science , reynolds equation , mechanics , mineral oil , compressibility , transient (computer programming) , newtonian fluid , non newtonian fluid , elasticity (physics) , composite material , reynolds number , metallurgy , physics , computer science , turbulence , operating system
This paper reports a theoretical investigation of transient elastohydrodynamic lubrication of a line contact. A time‐dependent Reynolds equation and elasticity equations for compressible solid‐liquid lubricants were solved using finite volume and multigrid techniques. The lubricants used were mineral oils mixed with very small solid particles, MoS 2 and PTFE, which can be treated as Newtonian fluids. The two surfaces were initially at rest and in contact. The transient oil film pressure and oil film thickness were calculated numerically. This simulation showed the significant effects of solid particles on the lubrication characteristics.