Author
Siyu Gao
Bio: Siyu Gao is an academic researcher from Harbin Institute of Technology. The author has contributed to research in topics: Thrust bearing & Body orifice. The author has an hindex of 3, co-authored 7 publications receiving 123 citations.
Papers
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TL;DR: In this article, the influences of six orifice chamber configurations on performance characteristics of aerostatic thrust bearings under various operating conditions are thoroughly studied using the computational fluid dynamics approach. But the results of the simulations are limited.
85 citations
01 Jul 2016
TL;DR: In this article, high-speed aerostatic spindles are essential for ultra-precision micro-milling machine tools and the distinguishing functional characteristics of the spindle system are achieved through innovative des...
Abstract: High-speed aerostatic spindles are essential for ultra-precision micro-milling machine tools. The distinguishing functional characteristics of the spindle system are achieved through innovative des...
35 citations
01 Apr 2017
TL;DR: Aerostatic bearings are the critical parts of ultra-high speed spindles applied to precision milling, grinding, and other precision engineering applications as mentioned in this paper, and the computational design of these bearings is discussed in this paper.
Abstract: Aerostatic bearings are the critical parts of ultra-high speed spindles applied to precision milling, grinding, and other precision engineering applications. In this paper, the computational design...
27 citations
TL;DR: In this paper, a finite element method (FEM) based FSI modeling method is proposed for the design of aerostatic thrust bearing considering FSI, and the change of discharge coefficient caused by FSI phenomenon is considered by adopting a discharge coefficient model.
20 citations
TL;DR: In this article, the influence of various orifice length-diameter ratio (OLDR) parameters on the performance of the bearing was comprehensively studied using the computational fluid dynamics (CFD) approach.
Abstract: Orifice-restricted hydrostatic thrust bearings are broadly employed in ultra-precision machine tools, aerospace industries, and so forth. The orifice length–diameter ratio (OLDR) is one of the significant geometrical parameters of the orifice-restricted hydrostatic thrust bearing, which directly affects the performance of the bearing. To accurately guide the design of the hydrostatic thrust bearing, the effect of the OLDR on the performance of the hydrostatic thrust bearing needs to be thoroughly and scientifically investigated, especially for ultra-precision machine tools. In this paper, the influences of various OLDRs are comprehensively studied using the computational fluid dynamics (CFD) approach on the pressure pattern, velocity, turbulent intensity, and vortices, as well as the load capacity, stiffness, volume flow rate, and orifice flow resistance of the hydrostatic thrust bearing under identical operating conditions. The obtained results show that there are differences in performance behaviors of the hydrostatic thrust bearing caused by different OLDRs. Some new findings are obtained, particularly in the second-order small vortices which appear in the annular recesses with all OLDRs except that of 2, and the flow resistance does not always increase with increasing OLDRs. Finally, the proposed CFD approach is experimentally validated.
14 citations
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TL;DR: A review of the state-of-the-art in aerostatic bearing research and development with the emphasis on analytical and computational approaches for design and optimization of bearing performance is presented in this paper.
83 citations
TL;DR: In this article, the effects of manufacturing errors on the static performance of aerostatic porous journal bearings were investigated by solving the Darcy-Forchheimer law and Navier-Stokes equations.
45 citations
01 Jul 2016
TL;DR: In this article, high-speed aerostatic spindles are essential for ultra-precision micro-milling machine tools and the distinguishing functional characteristics of the spindle system are achieved through innovative des...
Abstract: High-speed aerostatic spindles are essential for ultra-precision micro-milling machine tools. The distinguishing functional characteristics of the spindle system are achieved through innovative des...
35 citations
TL;DR: In this paper, a method based on computational fluid dynamic (CFD) method and dynamic mesh technology (DMT) was proposed to quantitatively study the effects of manufacturing errors on the running accuracy of aerostatic porous bearings.
35 citations
01 Apr 2017
TL;DR: Aerostatic bearings are the critical parts of ultra-high speed spindles applied to precision milling, grinding, and other precision engineering applications as mentioned in this paper, and the computational design of these bearings is discussed in this paper.
Abstract: Aerostatic bearings are the critical parts of ultra-high speed spindles applied to precision milling, grinding, and other precision engineering applications. In this paper, the computational design...
27 citations