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Research Papers: Hydrodynamic Lubrication

Designing Aerostatic Bearing With Counterbalancing Gaps for Lifting a Heavy Payload

[+] Author and Article Information
Nripen Mondal

Department of Mechanical Engineering,
Jadavpur University,
Kolkata 700 032, India
e-mail: nripen_mondal@rediffmail.com

Rana Saha

Assistant Professor
Department of Mechanical Engineering,
Jadavpur University,
Kolkata 700 032, India
e-mail: rsaha@mech.jdvu.ac.in

Dipankar Sanyal

Professor
Department of Mechanical Engineering,
Jadavpur University,
Kolkata 700 032, India
e-mail: dsanyal@mech.jdvu.ac.in

1Corresponding author.

Contributed by the Tribology Division of ASME for publication in the JOURNAL OF TRIBOLOGY. Manuscript received July 4, 2013; final manuscript received February 9, 2014; published online March 25, 2014. Assoc. Editor: Daniel Nélias.

J. Tribol 136(3), 031701 (Mar 25, 2014) (10 pages) Paper No: TRIB-13-1133; doi: 10.1115/1.4026887 History: Received July 04, 2013; Revised February 09, 2014

An aerostatic bearing has been designed for supporting a heavy payload. The bearing involves an axial gap on the stator top that provides an upward lift, a bottom gap for counterbalancing the tendency of large lift-off, and a feeding orifice at the bearing inlet that is connected with the gaps by a network of holes or inherences yielding the damping. Notable contributions of the work are proving the concept by numerical simulation through first-principle order-separated modeling and evolving a simple solution strategy. The predicted vertical motion dynamics of the payload reveals that, depending on the target range of the payload weight, alternatives could be free or choked orifice designs.

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References

Fan, K.-C., Ho, C.-C., and Mou, J.-I., 2002, “Development of a Multiple-Microhole Aerostatic Air Bearing System,” J. Micromech. Microeng., 12, pp. 636–643. [CrossRef]
Hashimoto, H., Ochiai, M., and Sunami, Y., 2012, “Robust Optimum Design of Fluid Dynamic Bearing for Hard Disk Drive Spindle Motors,” ASME J. Tribol., 134(4), p. 032001. [CrossRef]
Kim, M., Jang, G., and Kim, H., 2010, “Stability Analysis of a Disk-Spindle System Supported by Coupled Journal and Thrust Bearings Considering Five Degrees of Freedom,” Tribol. Int., 43(8), pp. 1479–90. [CrossRef]
Lee, J., Kim, J., and Park, N.-C., 2008, “Air-Bearing Surface Design of an Optical Flying Head Considering Dynamic Characteristics”, Proc. Inst. Mech. Eng., Part J, 222, pp. 581–591. [CrossRef]
Li, Y. T. and Ding, H., 2007, “Design Analysis and Experimental Study of Aerostatic Linear Guideways Used in a High Acceleration and High Precision XY Stage,” Proc. Inst. Mech. Eng., Part J.221, pp. 1–9. [CrossRef]
Zhang, Q. D. and Shan, X. C., 2008, “Dynamic Characteristics of Micro Air Bearings for Microsystems,” Microsyst. Technol., 14, pp. 229–234. [CrossRef]
Sugimoto, A., Danjo, H., Kitagawa, T., Hirayamam, T., Matsuoka, T., and Sasaki, K., 2011, “Development of Ultraprecise Positioning X-Y Stage Composed of Pneumatic Servo Bearing Actuators,” Proc. Inst. Mech. Eng., Part J, 225, pp. 655–662. [CrossRef]
Liu, R., Wang, X.-L., and Zhang, X.-Q., 2012, “Effects of Gas Rarefaction on Dynamic Characteristics of Micro Spiral-Grooved Thrust Bearing,” ASME J. Tribol., 134(2), p. 022201. [CrossRef]
Yoshimoto, S., Yoshida, Y., and Yagi, K., 2004, “The Seal System in Aerostatic Journal Bearings for High Vacuum Chambers,” ASME J. Tribol., 126(2), pp. 310–315. [CrossRef]
Lund, J. W., 1967, “A Theoretical Analysis of Whirl Instability and Pneumatic Hammer for a Rigid Rotor in Pressurized Gas Journal Bearing,” Trans ASME, J. Lubr. Technol., 89(2), pp. 154–165. [CrossRef]
Talukder, H. M. and Stowell, T. B., 2003, “Pneumatic Hammer in an Externally Pressurized Orifice Compensated Air Journal Bearing,” Tribol. Int., 36(8), pp. 585–591. [CrossRef]
Al-Bender, F., 2009, “On the Modelling of the Dynamic Characteristics of Aerostatic Bearing Films: From Stability Analysis to Active Compensation,” Precision Eng., 33, pp. 117–126. [CrossRef]
Hamrock, B. J., 1994, Fundamentals of Fluid Film Lubrication, McGraw-Hill, New York.
Zuo, X.-B., Wang, J.-M., Yin, Z.-Q., and Li, S.-Y., 2013, “Performance Analysis of Multirecess Angled-Surface Slot-Compensated Conical Hydrostatic Bearing,” ASME J. Tribol., 135(4), p. 041701. [CrossRef]
Johnson, R. E. and Manring, N. D., 2005, “Translating Circular Thrust Bearings,” J. Fluid Mech., 530, pp. 197–212. [CrossRef]
Bakker, O. J. and van Ostayen, R. A. J., Yin, Z.-Q., and Li, S.-Y., 2010, “Recess Depth Optimization for Rotating, Annular, and Circular Recess Hydrostatic Thrust Bearings,” ASME J. Tribol.132(1), p. 011103. [CrossRef]
Morosi, S. and Santos, I. F., 2011, “On the Modelling of Hybrid Aerostatic-Gas Journal Bearings,” Proc. Inst. Mech. Eng., Part J.225, pp. 641–653. [CrossRef]
Chen, C. H., Yang, D. W., and Kang, Y., 2011, “Stability of Rigid Rotor–Aerostatic Bearings With Double Compensations Caused by Orifice and Inherence in Series,” Tribol. Int., 44(4), pp. 368–379. [CrossRef]
Ye, Y. X., Chen, X. D., Hu, Y. T., and Luo, X., 2010, “Effects of Recess Shapes on Pneumatic Hammering in Aerostatic Bearings,” Proc. Inst. Mech. Eng., Part J, 224, pp. 231–237. [CrossRef]
Nakamura, T. and Yoshimoto, S., 1997, “Static Tilt Characteristics of Aerostatic Rectangular Double Pad Thrust Bearings With Double Row Admissions,” Tribol.Int., 30(8), pp. 605–611. [CrossRef]
Slocum, A., Badaran, M., Cortesi, R., and Hart, A. J., 2003, “Linear Motion Carriage With Aerostatic Bearings Preloaded by Inclined Iron Core Linear Electric Motor,”Precision Eng., 27, pp. 382–394. [CrossRef]
Aguirre, G., Al-Bender, F., and Van BrusselH., 2010, “A Multiphysics Model for Optimizing the Design of Active Aerostatic Thrust Bearings,” Precision Eng., 34, pp. 507–515. [CrossRef]
Ro, S. K., Kim, S., Kwakb, Y., and Parka, C. H., 2010, “A Linear Air Bearing Stage With Active Magnetic Preloads for Ultraprecise Straight Motion,” Precision Eng., 34, pp. 186–194. [CrossRef]
Hua, W., Yu, S., Zhou, W., and Myo, K. S., 2012, “A Fast Implicit Algorithm for Time-Dependent Dynamic Simulations of Air Bearing Sliders,” ASME J. Tribol., 134(3), p. 031901. [CrossRef]
Li, L. and Bogy, D. B., 2013, “A Local Adaptive Multigrid Control Volume Method for the Air Bearing Problem in Hard Disk Drives,” ASME J. Tribol., 135(3), p. 032001. [CrossRef]
Li, J., Xu, J., Shimizu, Y., Honchi, M., Ono, K., and Kato, Y., 2010, “Design and Evaluation of Damped Air Bearings at Head-Disk Interface,” ASME J. Tribol., 132(3), p. 031702. [CrossRef]

Figures

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Fig. 1

Schematic of the double-pad air bearing: (a) front view and (b) top view

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Fig. 2

Variation of the air gap resistance with the top gap

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Fig. 3

Variation of the manifold pressure with the air gap on the stator top for total air gaps of (a) 100 μm and (b) 30 μm

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Fig. 4

Variation of the total mass flow rate with the top air gap

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Fig. 5

Comparison of the approximate analytical solution and the CFD-predicted pressures for the 50 μm top and bottom air gaps gaps for the 0.3 MPa compressor pressure

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Fig. 6

Variation of pressures for the 15 μm top and bottom air gaps with a choked orifice and 0.3 MPa compressor pressure

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Fig. 7

Variation of pressures for the 15 μm top and bottom air gaps with a free-flow orifice and 0.3 MPa compressor pressure

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Fig. 8

Variation of the axial pressure force with the air gap on the stator top for total air gaps of (a) 100 μm and (b) 30 μm

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Fig. 9

Lifting dynamics of 9 kN total weight for the design with a 100 μm axial gap

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Fig. 10

Lifting dynamics of the total load for the 15 μm top and bottom air gaps at the final steady state

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Fig. 11

Lifting dynamics of a 1000 N total weight

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