Bearing Performance Analysis of the Thermal and Surface Roughness Effects by Finite Element Method on Slider Bearings Through Non-Newtonian Fluid-Type Lubricant
The finite element method was used in this study to explore the impact of surface roughness and thermal characteristics on slider bearings with non-Newtonian power-law fluid flow lubricant. One-dimensional transverse and longitudinal surface roughness models were considered under the stochastic assu...
Saved in:
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2024-01-01
|
| Series: | International Journal of Aerospace Engineering |
| Online Access: | http://dx.doi.org/10.1155/ijae/3290140 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| Summary: | The finite element method was used in this study to explore the impact of surface roughness and thermal characteristics on slider bearings with non-Newtonian power-law fluid flow lubricant. One-dimensional transverse and longitudinal surface roughness models were considered under the stochastic assumption that roughness has a Gaussian random distribution. For improved computing efficiency, the surface’s uneven texture is transformed into a regular domain. For non-Newtonian power-law lubrication, a modified Reynolds equation was developed. The pressure distribution of the combined effect is less than that of the surface roughness and thermal effect in longitudinal surface roughness for all non-Newtonian parameters n and M⊛ values. As a result, there is an 1.6% reduction in load-carrying capacity performance and negligible friction force for nonparallel w=0.4 between the thermal effect and surface roughness. Nevertheless, for all non-Newtonian parameters n and M⊛ values, the pressure distribution of the thermal effect in the transverse roughness model is smaller than that of the combined and surface roughness effects. Consequently, there is an 8.9% reduction in load-carrying capacity performance and a negligible friction force for nonparallel w=0.4 between the surface roughness effect and the thermal effect condition, respectively. Additionally, the combined impacts at different temperatures were examined. As a result, in longitudinal models, the load-carrying capacity performance is better when the slider temperature is higher than the pad temperature, and vice versa for transverse models. Surface roughness and non-Newtonian power-law fluid characteristics generally enhance the performance of a slider bearing. Tables and graphs were employed to present the results. |
|---|---|
| ISSN: | 1687-5974 |