Results 71 to 80 of about 661 (213)

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
doaj   +1 more source

Effect of Pressure Equalization Groove Structure on Static Characteristics of Aerostatic Bearings [PDF]

Journal of Applied Fluid Mechanics
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.
C. Yuanqi, X. Yaping, L. Weining, G. Ning   +3 more
doaj   +1 more source

COMPARATIVE SIMULATION ANALYSIS OF AEROSTATIC THRUST BEARING AND ORIFICE-TYPE AEROSTATIC THRUST BEARING

Kashf Journal of Multidisciplinary Research
This research presents a comprehensive numerical simulation study comparing the performance of porous-type and orifice-type aerostatic thrust bearings using ANSYS Fluent. Detailed 3D CAD models were developed to reflect realistic geometries, followed by high-quality meshing and parameterized simulations under varying air film thicknesses, restrictor ...
null Muhammad Punhal Sahto, null Syed Nasir Mehdi Gardezi, null Ali Nawaz Sanjrani, null Muhammad Hassan, null Arfa, null Maryam Khan, null Syed Sameer Raza Bukhari, null Hassan Tahir   +7 more
openaire   +1 more source

STIFFNESS EVALUATION OF AEROSTATIC SPINDLE BASED ON NON-IDEAL CYLINDRICAL SURFACES

Jixie qiangdu, 2019
The non-ideal cylindrical surface model based on profile measurement was built by using Geomagic Studio software, and it was imported into UG12.0 to create the aerostatic bearing simulation model, which can be simulated by using ANSYS WORKBENCH software.
ZHAO ZeXiang, SHANG MengJiao, LIU RuYi, DOU WuYang   +3 more
doaj  

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

Spectral properties and identification of aerostatic bearings

Acta Mechanica Sinica, 2011
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Kozánek, Jan, Půst, Ladislav
openaire   +2 more sources

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

Numerical Analysis of Orifice-Type Aerostatic Thrust Bearing [PDF]

, 2015
This thesis provides the study about an analysis of aerostatic thrust bearing. In a very high-speed machine, regular bearing cannot be used. At very high speed about 300000 rpm to 600000 rpm, typical bearing gets high friction and wear.
Khatua, Bapuji
core  

Aerostatic Porous Annular Thrust Bearings as Seals

Tribology International
Peer ...
Miettinen Mikael, Viitala Raine, Vainio Valtteri   +2 more
openaire   +2 more sources

CFD-Based Analysis of Loading Performance and Hydrodynamic Effects in a Partial-Arc Aerostatic Radial Bearing

Lubricants
With the widespread use of high-speed motorized spindles in precision machining, conventional contact loading methods are no longer adequate for stiffness loading tests under high-speed operating conditions.
Ruiran Ma, Jiashuo Zhang, Ming Feng, Zhixin Jia, Jin Wang   +4 more
doaj   +1 more source