A flow-difference feedback iteration method and its application to high-speed aerostatic journal bearings

Li, Yazhe; Zhou, Kaiyu; Zhang, Zhen

doi:10.1016/j.triboint.2014.12.002

Cited by 28 publications

(14 citation statements)

References 15 publications

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“…The finite difference method is one of the commonly used methods for solving Reynolds equation. Yazhe Li proposes a novel iteration method for finite difference method‐based solution of Reynolds equation and applies it to the analysis of high‐speed aerostatic journal bearings . This paper uses the finite difference method to solve perturbation pressure Equation , and the program flow chart of solving equation is as follows (Figure ).…”

Section: Dynamics Model Of Hydrostatic Bearing Rotor Systemmentioning

confidence: 99%

Dynamic behavior of fluid‐structure coupling of hydrostatic spindle under effect of oil film slip

Chen

Wang

Gao

et al. 2017

Lubrication Science

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To better understand the dynamic characteristics of a hydrostatic spindle in fluid‐structure coupling, the impact of oil film slip on the 4 dynamic stiffness and damping coefficients of the spindle is studied. On the basis of modified Reynolds equation, which considers the microscale velocity slip effect, rotation error of the spindle is calculated. To solve the rotor axis orbit under the existence of eccentric quality, 4 dynamic stiffness and damping coefficients of the oil film, which describe the dynamics of a rotor axis orbit, are calculated by using load increment method and the pressure perturbation method. The research results show that velocity slip caused a certain impact on dynamics of bearing stiffness and damping performance. The experiment of the measuring path of the shaft verifies the correct and effect of the orbit of shaft center model.

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Section: Dynamics Model Of Hydrostatic Bearing Rotor Systemmentioning

confidence: 99%

Dynamic behavior of fluid‐structure coupling of hydrostatic spindle under effect of oil film slip

Chen

Wang

Gao

et al. 2017

Lubrication Science

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“…Yapılan bu çalışma ile elde edilen sonuçlar [10], [22] ve [31] çalışmalarda yer alan üç boyutlu basınç dağılımı grafikleri ile karşılaştırıldığında, her ne kadar basınçlı hava yataklarının geometrik özellikleri ve çalışma parametreleri farklı da olsa, birleşme çizgisi üzerindeki basınç değerlerinin, orifislerdeki maksimum basıncın ve orifislerden yatak kenarlarına dağılan basıncın formsal olarak uygunluk gösterdiği görülmüştür. Bu çalışma ile elde edilen diğer bir sonuç ise; Reynold's denkleminin nümerik çözümünde kullanılan dikdörtgen gridin birleşme çizgisi üzerindeki noktaların basınç değerlerinin yüksek mertebeden geri ve ileri farklar kullanılarak elde edilebileceğidir.…”

Section: Sonuçlar (Conclusion)unclassified

Radyal Havalı Yataklarda Basınç Dağılımının Nümerik Analizinde Çözüm Parametrelerinin ve Silindirik Grid Birleşiminin Etkileri

Dal¹,

Karaçay²

2017

Gazi Üniversitesi Mühendislik-Mimarlık Fakültesi Dergisi

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“…Increasing the supply pressure is the second approach. 13,17,22 However, the stability of aerostatic bearings decreases and the self-excited micro-vibration or the pneumatic hammer probably occur when the supply pressure increases. 23,24 The third approach is to use recess structure such as pockets or grooves on the aerostatic bearing surface.…”

Section: Introductionmentioning

confidence: 99%

Improving the stiffness of the aerostatic thrust bearing by using a restrictor with multi-orifice series

Zheng

Yang

Cui

et al. 2020

Proceedings of the Institution of Mechanical Engineers, Part J:

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To improve the stiffness of the orifice-type aerostatic bearing, a new construction of orifice restrictor with multiple orifices in series was proposed to enhance the restriction effect. The restriction effects of the restrictors with multiple orifices in series were studied numerically. Based on a circular aerostatic thrust bearing with a central feedhole, the effect of the bearing stiffness improved by the restrictors with multiple orifices in series was studied. The results show that the aerostatic bearing with the restrictors with multiple sub-orifices in series shows higher maximal bearing stiffness than the bearing with traditional simple orifice restrictor. For example, the maximal stiffness for aerostatic bearing with the restrictor of four sub-orifices in series is 57 N/µm, which is ∼11% larger than that of the bearing with simple orifice. With this construction, the restriction effect of the orifice restrictor can be enhanced by increasing the number of the sub-orifices, instead of decreasing the aperture of the orifice. This approach avoids the difficulty of manufacturing the orifice restrictor with too small aperture for achieving a high restriction effect. The feasibility of the restrictor with multiple sub-orifices in series proposed in this paper was verified with experimental studies.

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A flow-difference feedback iteration method and its application to high-speed aerostatic journal bearings

Cited by 28 publications

References 15 publications

Dynamic behavior of fluid‐structure coupling of hydrostatic spindle under effect of oil film slip

Dynamic behavior of fluid‐structure coupling of hydrostatic spindle under effect of oil film slip

Radyal Havalı Yataklarda Basınç Dağılımının Nümerik Analizinde Çözüm Parametrelerinin ve Silindirik Grid Birleşiminin Etkileri

Improving the stiffness of the aerostatic thrust bearing by using a restrictor with multi-orifice series

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