An Efficient Numerical Model of Elastohydrodynamic Lubrication for Transversely Isotropic Materials
| Autor: | Yinxian Zhang, Zhanjiang Wang |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Materials science
Mechanical Engineering Numerical analysis Finite difference method 02 engineering and technology Surfaces and Interfaces Mechanics 021001 nanoscience & nanotechnology Surfaces Coatings and Films Stress (mechanics) 020303 mechanical engineering & transports 0203 mechanical engineering Mechanics of Materials Transverse isotropy Lubrication Deformation (engineering) 0210 nano-technology Displacement (fluid) Elastic modulus |
| Zdroj: | Journal of Tribology. 141 |
| ISSN: | 1528-8897 0742-4787 |
| DOI: | 10.1115/1.4043902 |
| Popis: | An elastohydrodynamic lubrication model for a rigid ball in contact with a transversely isotropic half-space is constructed. Reynolds equation, film thickness equation, and load balance equation are solved using the finite difference method, where the surface vertical displacement or deformation of transversely isotropic half-space is considered through the film thickness equation. The numerical methods are verified by comparing the displacements and stresses with those from Hertzian analytical solutions. Furthermore, the effects of elastic moduli, entertainment velocities, and lubricants on fluid pressure, film thickness, and von Mises stress are analyzed and discussed under a constant load. Finally, the modified Hamrock–Dowson equations for transversely isotropic materials to calculate central film thickness and minimum film thickness are proposed and validated. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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