Abstract
Aerostatic pads are successfully employed in linear systems where very accurate and precise positioning is required, e.g. machine tools and measuring equipment. Both the static and dynamic performance of many different types of aerostatic pads have been already numerically and experimentally investigated. However, literature does not present so many works that investigate the performance of rectangular aerostatic pads with multiple restrictors, especially as regards their dynamic features. This paper shows an experimental and a numerical study of the static and dynamic performance of a rectangular aerostatic pad with multiple orifices distributed on a supply rectangle. The paper investigates the effect of the orifices diameter, of their position and of the supply pressure on the pad performance.
Similar content being viewed by others
Notes
It must be lower than the 10–15% of the nominal air gap and sufficiently large to provide a good signal-to-noise ratio.
References
Lentini, L., Moradi, M., Colombo, F.: A historical review of gas lubrication: from reynolds to active compensations. Tribol. Ind. 40(2), 165–182 (2018). https://doi.org/10.24874/ti.2018.40.02.01
Raparelli, T., Viktorov, V., Colombo, F., Lentini, L.: Aerostatic thrust bearings active compensation: critical review. Precis. Eng. 44, 1–12 (2016)
Al-Bender, F.: On the modelling of the dynamic characteristics of aerostatic bearing films: from stability analysis to active compensation. Precis. Eng. 33(2), 117–126 (2009)
Belforte, G., Raparelli, T., Trivella, A., Viktorov, V., Visconte, C.: CFD analysis of a simple orifice-type feeding system for aerostatic bearings. Tribol. Lett. 58(2), 25 (2015)
Belforte, G., Raparelli, T., Viktorov, V., Trivella, A: Discharge coefficients of orifice-type restrictor for aerostatic bearings. Tribol. Int. 40(3), 512–521 (2007)
Belforte, G., Colombo, F., Raparelli, T., Trivella, A., Viktorov, V.: Experimental analysis of air pads with micro holes. Tribol. Trans. 56(2), 169–177 (2013)
Kazimierski, Z., Trojnarski, J.: Investigations of externally pressurized gas bearings with different feeding systems. J. Lubr. Technol. 102(1), 59–64 (1980)
Boffey, D.A., Duncan, A.E., Dearden, J.K.: An experimental investigation of the effect of orifice restrictor size on the stiffness of an industrial air lubricated thrust bearing. Tribol. Int. 14(5), 287–291 (1981)
Boffey, D.A., Wilson, P.M.: An experimental investigation of the pressures at the edge of a gas bearing pocket. J. Lubr. Technol. 103(4), 593–600 (1981)
Chen, X.-D., He, X.-M.: The effect of the recess shape on performance analysis of the gas-lubricated bearing in optical lithography. Tribol. Int. 39(11), 1336–1341 (2006)
Li, Y.T., Ding, H.: Influences of the geometrical parameters of aerostatic thrust bearing with pocketed orifice—type restrictor on its performance. Tribol. Int. 40(7), 1120–1126 (2007)
Talukder, H.M., Stowell, T.B.: Pneumatic hammer in an externally pressurized orifice-compensated air journal bearing. Tribol. Int. 36(8), 585–591 (2003)
Grossman, R.L.: Application of flow and stability theory to the design of externally pressurized spherical gas bearings. J. Basic Eng. 85(4), 495–502 (1963)
Colombo, F., Moradi, M., Raparelli, T., Trivella, A., Viktorov, V.: Multiple holes rectangular gas thrust bearing: dynamic stiffness calculation with lumped parameters approach. In: Boschetti, G., Gasparetto, A. (eds.) Advances in Italian Mechanism Science, pp. 421–429. Springer, New York (2017)
Al Bender, F.: Contributions to the Design Theory of Circular Centrally Fed Aerostatic Bearings. Phd thesis, Katholieke Universiteit Leuven (1992)
Richardson, H.H., Cambridge, M.: 1958, “Static and Dynamic Characteristics of Compensated Gas Bearings,” Trans ASME, pp. 1503–1509
Licht, L., Fuller, D.D., Sternlicht, B.: Self-excited vibrations of an air-lubricated thrust bearing. Trans ASME 80(2), 411–414 (1958)
Licht, L., Elrod, H.: A study of the stability of externally pressurized gas bearings. J. Appl. Mech. 27(2), 250–258 (1960)
Turnblade, R.C.: The molecular transit time and its correlation with the stability of externally pressurized gas-lubricated bearings. J. Basic Eng. 85(2), 297–303 (1963)
Salbu, E.O.J.: Compressible squeeze films and squeeze bearings. J. Basic Eng. 86(2), 355–364 (1964)
Blondeel, E., Snoeys, R., Devrieze, L.: Dynamic stability of externally pressurized gas bearings. J. Lubr. Technol. 102(4), 511–519 (1980)
Plessers, P., Snoeys, R.: Dynamic identification of convergent externally pressurized gas-bearing gaps. J. Tribol. 110(2), 263–270 (1988)
Plessers, P., Snoeys, R.: Dynamic stability of mechanical structures containing externally pressurized gas-lubricated thrust bearings. J. Tribol. 110(2), 271–278 (1988)
Stiffler, A.K.: Analysis of the stiffness and damping of an inherently compensated, multiple-inlet, circular thrust bearing. J. Lubr. Technol. 96(3), 329–336 (1974)
Stiffler, A.K., Smith, D.M.: Dynamic characteristics of an inherently compensated, square, gas film bearing. J. Lubr. Technol. 97(1), 52–62 (1975)
Miyatake, M., Yoshimoto, S.: Numerical investigation of static and dynamic characteristics of aerostatic thrust bearings with small feed holes. Tribol. Int. 43(8), 1353–1359 (2010)
Renn, J.-C., Hsiao, C.-H.: Experimental and CFD study on the mass flow-rate characteristic of gas through orifice-type restrictor in aerostatic bearings. Tribol. Int. 37(4), 309–315 (2004)
Nishio, U., Somaya, K., Yoshimoto, S.: Numerical calculation and experimental verification of static and dynamic characteristics of aerostatic thrust bearings with small feedholes. Tribol. Int. 44(12), 1790–1795 (2011)
Charki, A., Diop, K., Champmartin, S., Ambari, A.: Numerical simulation and experimental study of thrust air bearings with multiple orifices. Int. J. Mech. Sci. 72, 28–38 (2013)
Bhat, N., Kumar, S., Tan, W., Narasimhan, R., Low, T.C.: Performance of inherently compensated flat pad aerostatic bearings subject to dynamic perturbation forces. Precis. Eng. 36(3), 399–407 (2012)
Colombo, F., Lentini, L., Raparelli, T., Trivella, A., Viktorov, V.: Dynamic Model of a Grooved Thrust Bearing: Numerical Model and Experimental Validation. In: Proceeding of the 23rd Conference of the Italian Association of Theoretical and Applied Mechanics, AIMETA 2017, vol. 4, pp. 506–517 (2017)
Colombo, F., Lentini, L., Raparelli, T., Viktorov, V.: Experimental identification of an aerostatic thrust bearing. In: Boschetti, G., Gasparetto, A. (eds.) Advances in Italian Mechanism Science, pp. 441–448. Springer, New York (2017)
Lentini, L.: Design, test and identification of an active aerostatic thrust bearing with a compliant mechanism and piezo actuator. Politecnico di Torino (2017)
Aguirre, G., Al-Bender, F., Van Brussel, H.: A Multiphysics Model for Optimizing the Design of Active Aerostatic Thrust Bearings. Precis. Eng. 34(3), 507–515 (2010)
Iruikwu, D., Isomaa, J.-M., Korkolainen, P., Kiviluoma, P., Kuosmanen, P., Calonius, O.: Dynamic loading system for air bearing testing. In: Proceedings of the International Conference of DAAAM Baltic “Industrial Engineering” pp. 309–314 (2012)
Yoshimoto, S., Kohno, K.: Static and dynamic characteristics of aerostatic circular porous thrust bearings (effect of the shape of the air supply area). J. Tribol. 123(3), 501 (2001)
Yoshimoto, S., Tamura, J., Nakamura, T.: Dynamic tilt characteristics of aerostatic rectangular double-pad thrust bearings with compound restrictors. Tribol. Int. 32(12), 731–738 (1999)
Colombo, F., Lentini, L., Raparelli, T., Viktorov, V.: Actively compensated aerostatic thrust bearing: design, modelling and experimental validation. Meccanica. 52, 3645–3660 (2017)
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Colombo, F., Lentini, L., Raparelli, T. et al. Dynamic Characterisation of Rectangular Aerostatic Pads with Multiple Inherent Orifices. Tribol Lett 66, 133 (2018). https://doi.org/10.1007/s11249-018-1087-x
Received:
Accepted:
Published:
DOI: https://doi.org/10.1007/s11249-018-1087-x