Results 1 to 10 of about 138 (128)
Dynamic Performance of Partially Orifice Porous Aerostatic Thrust Bearing [PDF]
Micromachines, 2021 The aerostatic thrust bearing’s performance under vibration brings certain changes in stiffness and stability, especially in the range of 100 to 10,000 Hz, and it is accompanied by significant increase in fluctuations due to the changes in frequency, and
Muhammad Punhal Sahto +4 more
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Research on flow characteristics of aerostatic circular thrust bearing [PDF]
The Journal of Engineering, 2018 In order to improve the pressure distribution, the aerostatic circular thrust bearing with single supply hole was studied. In the computational fluid dynamics (CFD) simulation, the laminar model, the turbulent model, the mixture model of laminar and ...
Hechun Yu +4 more
doaj +3 more sources
Multi-Field Coupling Dynamics Modeling of Aerostatic Spindle [PDF]
Micromachines, 2021 The aerostatic spindle in the ultra-precision machine tool shows the complex multi-field coupling dynamics behavior under working condition. The numerical investigation helps to better understand the dynamic characteristics of the aerostatic spindle and ...
Guoda Chen, Yijie Chen
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Research Developments of Aerostatic Thrust Bearings: A Review
Applied Sciences, 2022 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.
Qi Zhao +4 more
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Advances in Mechanical Engineering, 2015 In this article, an aerostatic thrust bearing with annular elastic uniform pressure plate structure was designed. In order to obtain a relationship between bearing capacity and stiffness of aerostatic thrust bearing designed in this article, first, the ...
Hao Dong, Xiao-Long Zhao, Jun-an Zhang
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Microvibration suppression of an aerostatic thrust bearing adopting flow field disturbance structure
Advances in Mechanical Engineering, 2017 The locally unsteady flow field near the orifice outlet of an aerostatic thrust bearing causes the gas pressure fluctuation on the bearing surface, which induces microvibration even if an invariable load acts on the bearing.
Yuntang Li, Xin Wan, Xiaolu Li
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Lubricants, 2020 As aerostatic bearings are used in high-speed metal-cutting machines to increase machining accuracy, there is the need to improve their characteristics, including compliance, which is usually high.
Vladimir Kodnyanko +3 more
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Structure design and performance analysis of aerostatic thrust bearing with compound restrictors [PDF]
MATEC Web of Conferences, 2022 Aerostatic thrust bearing compensated by multi-orifices and porous material restrictor simultaneously is proposed to improve the static performance of the bearing.
Li Yuntang +4 more
doaj +1 more source
Modelling and Simulation of Aerostatic Thrust Bearings [PDF]
IEEE Access, 2020 This paper demonstrates the modelling and simulation comparison of the static characteristics of a porous, orifice, and multiple type aerostatic thrust bearings on the basis of load-carrying capacity(LCC) and stiffness. The equations Navier-Stokes (N-S) are used to solve the internal distribution of pressure in computational fluid dynamics(CFD ...
Muhammad Punhal Sahto +5 more
openaire +3 more sources
International Journal of Mechanical System Dynamics, Volume 2, Issue 3, Page 290-307, September 2022., 2022 Abstract The dynamics of an ultra‐precision machine tool determines the precision of the machined surface. This study aims to propose an effective method to model and analyze the dynamics of an ultra‐precision fly‐cutting machine tool. First, the dynamic model of the machine tool considering the deformations of the cutter head and the lathe head is ...
Hanjing Lu +6 more
wiley +1 more source