An engineering approach to deterministic modeling of mixed-film contacts

作者：Zhai XJ^*; Chang L

来源：Tribology Transactions, 1998, 41(3): 327-334.

DOI：10.1080/10402009808983755

• elastohydrodynamic lubrication
• surface roughness effects
• contact mechanics

This paper presents the base model of an engineering approach to deterministic modeling of mixed-film contacts. Various modeling techniques are employed to achieve a proper balance among model robustness, solution accuracy and computational efficiency. The EHL variables of the contact are approximated to enhance the model robustness while asperity contact pressures are numerically calculated to provide deterministic results at the asperity level. Each asperity junction is modeled as a Hertzian contact, resulting in a small number of deterministic variables to allow efficient numerical analyses of transient contact/lubrication problems. The base model presented in this paper provides a platform on which more complete models can be developed to study transient asperity pressures, temperatures and lubricant additive effects. It may also be further developed into a computer-aided engineering design-analysis tool of machine components with lubricated concentrated contacts.

• 出版日期1998-7