Numerical Calculation of Rotation Effects on Hybrid Air Journal Bearings
| Autor: | Hong Yang, Xinkuan Wang, Baorui Wang, Zhike Peng, Qiao Xu, Zhang Lianxin |
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| Rok vydání: | 2016 |
| Předmět: |
Engineering
Bearing (mechanical) Computer simulation Precision engineering business.industry Mechanical Engineering Finite difference method Stiffness 02 engineering and technology Surfaces and Interfaces Structural engineering Aerodynamics 021001 nanoscience & nanotechnology Rotation Reynolds equation Surfaces Coatings and Films law.invention 020303 mechanical engineering & transports 0203 mechanical engineering Mechanics of Materials law medicine medicine.symptom 0210 nano-technology business |
| Zdroj: | Tribology Transactions. 60:195-207 |
| ISSN: | 1547-397X 1040-2004 |
| Popis: | Hybrid air journal bearings are of great importance in the precision engineering. Despite much progress, the influence of the aerostatic effect and the aerodynamic effect on the bearings is still not clear. Numerical calculation is a useful technique to evaluate bearing performance. Many theoretical problems related to Reynolds equation have been figured out by numerical simulation. The present study analyzes the effects of rotational speed—that is, the bearing speed number—on the performance of hybrid bearings. The behaviors of the pure aerostatic bearing and the pure aerodynamic bearing are investigated for comparison. The second-order finite difference method (FDM) and an iterative procedure are proposed to solve the Reynolds equation and derive the air film pressure distribution. The bearing characteristics such as load capacity, stiffness, friction coefficient, attitude angle, and mass inflow rate are taken into consideration. The research reveals the very dependence of the hybrid bearing's p... |
| Databáze: | OpenAIRE |
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