A Two-Scale Approach for Lubricated Soft-Contact Modeling: An Application to Lip-Seal Geometry | Zendy

Michele Scaraggi | Zendy; Giuseppe Carbone | Zendy

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A Two-Scale Approach for Lubricated Soft-Contact Modeling: An Application to Lip-Seal Geometry

Author(s) -

Michele Scaraggi,

Giuseppe Carbone

Publication year - 2012

Publication title -

advances in tribology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.325

H-Index - 17

eISSN - 1687-5923

pISSN - 1687-5915

DOI - 10.1155/2012/412190

Subject(s) - asperity (geotechnical engineering) , lubrication , scale (ratio) , surface finish , geometry , seal (emblem) , surface roughness , statistic , mechanics , materials science , computer science , mechanical engineering , engineering , mathematics , physics , composite material , visual arts , quantum mechanics , art , statistics

We consider the case of soft contacts in mixed lubrication conditions. We develop a novel, twoscales contact algorithm in which the fluid- and asperity-asperity interactions are modeled within a deterministic or statistic scheme depending on the length scale at which those interactions are observed. In particular, the effects of large-scale roughness are deterministically calculated, whereasthose of small-scale roughness are included by solving the corresponding homogenized problem. The contact scheme is then applied to the modeling of dynamic seals. The main advantage of the approach is the tunable compromise between the high-computingdemanding characteristics of deterministic calculations and the much lower computing requirements of the homogenized solutions

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