Results 21 to 30 of about 138 (128)

Characterization and Evaluation of Rotation Accuracy of Hydrostatic Spindle under the Influence of Unbalance

Shock and Vibration, Volume 2020, Issue 1, 2020., 2020
The paper studies the characterization and evaluation technology of rotation accuracy of hydrostatic spindle under the influence of unbalance. The dynamic model of the motion error of the hydrostatic spindle is established based on the dynamic parameters. The variation law of motion error of spindle rotor is analyzed under the unbalanced mass.
Dongju Chen, You Zhao, Jingfang Liu, Adam Glowacz   +3 more
wiley   +1 more source

Fluid Film Bearings and CFD Modeling: A Review

Machines, 2023
This paper is a review of the literature about CFD modeling and analysis of journal, thrust, and aerostatic bearings; the advantages and disadvantages of each are specified, and the bearing problems that have been analyzed are discussed to improve their ...
Demetrio Pérez-Vigueras, Jorge Colín-Ocampo, Andrés Blanco-Ortega, Rafael Campos-Amezcua, Cuauhtémoc Mazón-Valadez, Víctor I. Rodríguez-Reyes, Saulo Jesús Landa-Damas   +6 more
doaj   +1 more source

Research and Analysis of the Static Characteristics of Aerostatic Bearings with a Multihole Integrated Restrictor

Shock and Vibration, Volume 2020, Issue 1, 2020., 2020
In order to further study the performance of aerostatic bearing, an aerostatic bearing with a multihole integrated restrictor was proposed in this paper. Based on the physical model of aerostatic bearings, the governing equation was established, deduced discretely, and solved numerically by the finite‐difference method and flow balance principle in ...
Zhi-wei Lu, Jun-an Zhang, Bo Liu, Nawawi Chouw   +3 more
wiley   +1 more source

An infinite-stiffness aerostatic thrust bearing.

Journal of the Japan Society for Precision Engineering, 1990
筆者らが考案した静圧式自動調整絞りを組み込んだ空気静圧スラスト軸受を製作してその特性を解析した結果, 次の結論を得た。(1) 400Nの荷重範囲において軸受の静剛性を無限大とすることができた.(2) 主軸受との調整軸受への空気供給圧比を調節することで軸受剛性を正, 無限大, 負と広い範囲で変更できた.(3) ステップ応答における整定時間は5msであり, 圧電素子を用いた自動調整絞りと同程度である.(4) 周波数応答より, 動的コンプライアンスは2Hz以下で1nm/N以下, 10Hzでも3nm/N程度であることが確認された.(5) 供給圧の変動に注意すれぽ10nm程度の軸位置安定性を得ることができる.以上により, 改良された静圧式自動調整絞り付空気静圧軸受は広い荷重範囲において無限大の静剛性を示し ...
MIZUMOTO, Hiroshi, MATSUBARA, Tomio, USUKI, Masao, KAWAKAMI, Ryuichi, YABUYA, Makoto   +4 more
openaire   +2 more sources

Study on the Gas Film Flow Field and its Influencing Factors at the Outlet of the Orifice of the Aerostatic Bearing

Shock and Vibration, Volume 2020, Issue 1, 2020., 2020
In order to further explore and study the influencing factors and regulars of the gas film flow field at the outlet of the orifice of the aerostatic bearing, the large eddy simulation method was used to calculate the N‐S equation in the calculation area of the gas film flow field at the outlet of the orifice of the aerostatic bearing, and the ...
Zhi-Wei Lu, Jun-An Zhang, Bo Liu, Jin Huang   +3 more
wiley   +1 more source

Influence of T-shaped Pressure-equalization Grooves on Static Characteristics of Aerostatic Bearings under Offset Loads [PDF]

Journal of Applied Fluid Mechanics
Aerostatic thrust bearings are highly susceptible to tilting under offset loads, which can cause bearing failure. To enhance the load-carrying capacity and tilting moment resistance of bearings under tilted operating conditions, this study proposes a ...
X. Shan, A. Yang, H. Su, W. Fu, Y. Zhang, Y. Song, Y. Wang, L. Zhang, J. Shen, Z. Shan, W. Jiang, B. Ye   +11 more
doaj   +1 more source

Numerical Simulation and Experimental Study on the Gas-Solid Coupling of the Aerostatic Thrust Bearing with Elastic Equalizing Pressure Groove

Shock and Vibration, 2017
Aiming at the problem of low stiffness of aerostatic bearing, according to the principle of gas-solid coupling, this paper designs a kind of aerostatic thrust bearing with elastic equalizing pressure groove (EEPG) and investigates the effect of elastic ...
Zhao Xiao-long, Zhang Jun-an, Dong Hao, Fang Zhou, Li Jun-ning   +4 more
doaj   +1 more source

Dynamic Quality of an Aerostatic Thrust Bearing with a Microgroove and Support Center on Elastic Suspension

Mathematics, 2021
The disadvantage of aerostatic bearings is their low dynamic quality. The negative impact on the dynamic characteristics of the bearing is exerted by the volume of air contained in the bearing gap, pockets, and microgrooves located at the outlet of the ...
Vladimir Kodnyanko, Stanislav Shatokhin, Andrey Kurzakov, Lilia Strok, Yuri Pikalov, Iakov Pikalov, Olga Grigorieva, Maxim Brungardt   +7 more
doaj   +1 more source

Theoretical study on dynamics quality of aerostatic thrust bearing with external combined throttling [PDF]

FME Transactions, 2020
The article considers the design, mathematical modelling and theoretical study of dynamics quality on aerostatic thrust bearing with external combined air double throttling and flow cavity.
Kodnyanko Vladimir A., Shatokhin Stanislav N.   +1 more
doaj  

Research on the Design Method of a Bionic Suspension Workpiece Based on the Wing Structure of an Albatross

Applied Bionics and Biomechanics, Volume 2019, Issue 1, 2019., 2019
An air suspension platform uses air pressure to realize the suspension function during the suspension process, and it has the disadvantage of large air pressure and a small suspension force. In this study, an air suspension platform was built using bionic design to reduce the required air pressure and increase the suspension force.
Siyang Gao, Bangcheng Zhang, Jianwei Sun, Jose Merodio   +3 more
wiley   +1 more source