Optimal design of an annular thrust air bearing using parametric computational fluid dynamics model and genetic algorithms

Gao, Qiang; Lu, Lihua; Chen, Wanqun; Wang, Guanglin

doi:10.1177/1350650117743684

Cited by 13 publications

(6 citation statements)

References 31 publications

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“…The pressure near the orifice is higher, and the gas pressure gradually decreases when it is far away from the orifice. The velocity contour near the orifice is shown in Figure 1d [1]. Along the radial direction, the velocity decreases gradually.…”

Section: Introductionmentioning

confidence: 98%

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Research Developments of Aerostatic Thrust Bearings: A Review

et al. 2022

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In aerostatic thrust bearings (ATBs), a high-pressure gas film with a certain bearing capacity and stiffness is formed by passing high-pressure gas between the moving surface and the static surface. Aerostatic bearings have outstanding advantages in the following aspects: high precision, high speed, and long service life, etc. They are widely used in many fields, such as high-speed air spindles, precision machine tools, air-bearing guideways, turbine machinery, and high-speed drills. With the pursuit of higher efficiency and high-precision machining machinery, there is an increasing demand for high-performance ATBs. Much effort has been spent on the study of ATBs, such as improvements in load capacity and stiffness, and the enhancement of stability. Some significant progress has been achieved. In this paper, the research developments of ATBs are summarized from several aspects, such as theoretical models and experimental methods, static performance, dynamic performance, and applications. In addition, insights on the breakthrough and development trends of ATBs are put forward. It is hoped that this paper can provide some guidance for the design and application of ATBs.

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Section: Introductionmentioning

confidence: 98%

“…A high-pressure gas film with a certain bearing capacity and stiffness is formed between the friction pairs. Thus, aerostatic bearings have the following advantages, such as low friction, high speed, high precision, and long service life [1]. A schematic photograph of aerostatic thrust bearings (ATBs) is depicted in Figure 1a.…”

Section: Introductionmentioning

confidence: 99%

Research Developments of Aerostatic Thrust Bearings: A Review

et al. 2022

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“…This increases load-bearing capacity and rigidity [28]. In comparison to other bearing ideas, the air bearing offers significant benefits such as extremely low friction, minimal wear, and wide range of working speed [29][30]. The air bearing is a part that is utilised in the construction of ultraprecise machinery.…”

Section: Introductionmentioning

confidence: 99%

Design and Development of Different Applications of PATB (Porous Aerostatic Thrust Bearing): A Review

CHAKRABORTY,

CHAKRABORTI

2023

Finnish J. Trib.

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In several applications demanding precise and ultra-precision movements, porous aerostatic thrust bearings had been employed as a crucial precision engineering component and enabling technology. By acting as a lubricant between the moving part and the stationary part in aerostatic bearings, pressurized air almost completely eliminates friction. Since air acts as the lubricant, oil-based lubricants leave no debris behind. The air prolongs the life of the substances by preventing them from slipping and wearing. The aerostatic type uses graphite as a porous film to disrupt the air uniformly over the surface, or a tiny hole is drilled through the centre of the bearing to let the air circulate and produce a thin layer between the components. With an increased reliance on computational and mathematical methodologies for design and bearing performance optimization, this review paper aims to present the state-of-the-art in aerostatic bearings advancement and research. It also conducts a critical analysis of their future research directions and development trends in the next ten years and beyond. Air bearings are utilized in the production of tools like lathes, CMM, and grinders because they are highly precise in their operation and decrease mistakes and production time. Air bearings are available in a variety of forms and sizes. The assessment of future trends and obstacles in aerostatic bearings investigation, as well as their prospective applications in the precision engineering sectors, concludes the study.

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“…Aerostatic bearings are widely adopted in a various kinds of ultra-precision machining equipment and metrology instrument for the distinct advantages of high precision. 1,2 In the working condition of the aerostatic bearing, a pressurized thin air film with micrometer level thickness is formed in the clearance between the moving parts and the stationary parts. The gravity of the moving parts and the external load are balanced by the air film force.…”

Section: Introductionmentioning

confidence: 99%

Development of a CFD based parametric GUI for the design of the rectangular aerostatic thrust bearings

Gao

Lei

Gao

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part J:

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The CFD method is capable to investigate the influence of the geometrical parameters of the air film and the manufacturing error on the performance of aerostatic bearings. To facilitate the CFD based design of the aerostatic bearings, a parametric GUI for analyzing the performance of aerostatic bearing is developed, by which the performance of aerostatic bearings with varying geometrical parameters and manufacturing errors can be simulated efficiently. Furthermore, as a case study, the influence of the key geometrical parameters and the manufacturing errors on the performance of rectangular aerostatic bearings is investigated, which provides guidance for the design and manufacturing process of an aerostatic stage. Finally, the experimental test was conducted to verify the simulation result.

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Optimal design of an annular thrust air bearing using parametric computational fluid dynamics model and genetic algorithms

Cited by 13 publications

References 31 publications

Research Developments of Aerostatic Thrust Bearings: A Review

Research Developments of Aerostatic Thrust Bearings: A Review

Design and Development of Different Applications of PATB (Porous Aerostatic Thrust Bearing): A Review

Development of a CFD based parametric GUI for the design of the rectangular aerostatic thrust bearings

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