Effect of Pressure Equalization Groove Structure on Static Characteristics of Aerostatic Bearings
In order to improve the load capacity and stiffness, the pressure-equalizing groove is introduced into the structure of aerostatic bearing, which can optimize the mechanics characteristics. A Computational Fluid Dynamics (CFD) simulation of bearing with gas-lubricant is developed. The effects of pre...
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Isfahan University of Technology
2025-02-01
|
| Series: | Journal of Applied Fluid Mechanics |
| Subjects: | |
| Online Access: | https://www.jafmonline.net/article_2617_a2299d6f79e4186b49337f6a4801b677.pdf |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1823864113445470208 |
|---|---|
| author | C. Yuanqi X. Yaping L. Weining G. Ning |
| author_facet | C. Yuanqi X. Yaping L. Weining G. Ning |
| author_sort | C. Yuanqi |
| collection | DOAJ |
| description | In order to improve the load capacity and stiffness, the pressure-equalizing groove is introduced into the structure of aerostatic bearing, which can optimize the mechanics characteristics. A Computational Fluid Dynamics (CFD) simulation of bearing with gas-lubricant is developed. The effects of pressure-equalizing groove depth, width, length, number, and supply air pressure on the load capacity, stiffness, and flow rate of orifice-throttle gas bearings are individually analyzed using COMSOL Multiphysics simulation software. The results are then experimentally validated. The results demonstrate that a groove structure designed to equalize pressure can enhance the load-bearing capacity and rigidity of orifice-throttle aerostatic bearings. The static performance of aerostatic bearing increase with the depth, width, number, and supply air pressure of the pressure-equalizing grooves. The peak stiffness of the bearing is significantly enhanced as the depth, width, and supply air pressure of the pressure-equalizing grooves increase. Moreover, the change of grooves number influence the geometric parameter of the air film associated with the maximum stiffness. Different depths, numbers, and supply air pressures of the pressure-equalizing grooves significantly impact the flow rate. In contrast, the variations in width and length have a minor effect. The numerical simulation findings reveal a 71.67% increase in maximum load-bearing capacity and an 81.20% rise in peak stiffness for gas-floating bearings incorporating pressure-equalizing groove structures. Lastly, the congruence between experimental and simulated stiffness curve variations underscores the validity and robustness of the simulation methodology. |
| format | Article |
| id | doaj-art-bab2c27d258a4400a18c261109fbaefc |
| institution | Kabale University |
| issn | 1735-3572 1735-3645 |
| language | English |
| publishDate | 2025-02-01 |
| publisher | Isfahan University of Technology |
| record_format | Article |
| series | Journal of Applied Fluid Mechanics |
| spelling | doaj-art-bab2c27d258a4400a18c261109fbaefc2025-02-09T07:16:04ZengIsfahan University of TechnologyJournal of Applied Fluid Mechanics1735-35721735-36452025-02-011841086109710.47176/jafm.18.4.28992617Effect of Pressure Equalization Groove Structure on Static Characteristics of Aerostatic BearingsC. Yuanqi0X. Yaping1L. Weining2G. Ning3School of Mechanical Engineering, Jiangsu University of Technology, Wujin, Changzhou, Jiangsu 213016, ChinaSchool of Mechanical Engineering, Jiangsu University of Technology, Wujin, Changzhou, Jiangsu 213016, ChinaSchool of Mechanical Engineering, Jiangsu University of Technology, Wujin, Changzhou, Jiangsu 213016, ChinaJiangsu JITRI Jingkai High Value Manufacturing Co. Ltd. Kunshan, Suzhou, Jiangsu 215300, ChinaIn order to improve the load capacity and stiffness, the pressure-equalizing groove is introduced into the structure of aerostatic bearing, which can optimize the mechanics characteristics. A Computational Fluid Dynamics (CFD) simulation of bearing with gas-lubricant is developed. The effects of pressure-equalizing groove depth, width, length, number, and supply air pressure on the load capacity, stiffness, and flow rate of orifice-throttle gas bearings are individually analyzed using COMSOL Multiphysics simulation software. The results are then experimentally validated. The results demonstrate that a groove structure designed to equalize pressure can enhance the load-bearing capacity and rigidity of orifice-throttle aerostatic bearings. The static performance of aerostatic bearing increase with the depth, width, number, and supply air pressure of the pressure-equalizing grooves. The peak stiffness of the bearing is significantly enhanced as the depth, width, and supply air pressure of the pressure-equalizing grooves increase. Moreover, the change of grooves number influence the geometric parameter of the air film associated with the maximum stiffness. Different depths, numbers, and supply air pressures of the pressure-equalizing grooves significantly impact the flow rate. In contrast, the variations in width and length have a minor effect. The numerical simulation findings reveal a 71.67% increase in maximum load-bearing capacity and an 81.20% rise in peak stiffness for gas-floating bearings incorporating pressure-equalizing groove structures. Lastly, the congruence between experimental and simulated stiffness curve variations underscores the validity and robustness of the simulation methodology.https://www.jafmonline.net/article_2617_a2299d6f79e4186b49337f6a4801b677.pdfaerostatic bearingspressure-equalizing groovesstatic performancefinite element simulation |
| spellingShingle | C. Yuanqi X. Yaping L. Weining G. Ning Effect of Pressure Equalization Groove Structure on Static Characteristics of Aerostatic Bearings Journal of Applied Fluid Mechanics aerostatic bearings pressure-equalizing grooves static performance finite element simulation |
| title | Effect of Pressure Equalization Groove Structure on Static Characteristics of Aerostatic Bearings |
| title_full | Effect of Pressure Equalization Groove Structure on Static Characteristics of Aerostatic Bearings |
| title_fullStr | Effect of Pressure Equalization Groove Structure on Static Characteristics of Aerostatic Bearings |
| title_full_unstemmed | Effect of Pressure Equalization Groove Structure on Static Characteristics of Aerostatic Bearings |
| title_short | Effect of Pressure Equalization Groove Structure on Static Characteristics of Aerostatic Bearings |
| title_sort | effect of pressure equalization groove structure on static characteristics of aerostatic bearings |
| topic | aerostatic bearings pressure-equalizing grooves static performance finite element simulation |
| url | https://www.jafmonline.net/article_2617_a2299d6f79e4186b49337f6a4801b677.pdf |
| work_keys_str_mv | AT cyuanqi effectofpressureequalizationgroovestructureonstaticcharacteristicsofaerostaticbearings AT xyaping effectofpressureequalizationgroovestructureonstaticcharacteristicsofaerostaticbearings AT lweining effectofpressureequalizationgroovestructureonstaticcharacteristicsofaerostaticbearings AT gning effectofpressureequalizationgroovestructureonstaticcharacteristicsofaerostaticbearings |