Affiliation:
1. School of Engineering, Department of Mechanical Engineering, Tokai University, Kanagawa, Japan 259-12
Abstract
In this paper, in order to estimate an air film thickness between moving web and guide roller (web spacing height), an air film thickness formula was derived based on the finite width compressible foil bearing theory. In the derivation of the air film thickness formula, the two-dimensional Reynolds equation and foil equilibrium equation were discretized by the finite difference method and solved iteratively to obtain the pressure and air film thickness distributions for various parameters. Based on the numerical results, the simplified convenience formula for the estimation of air film thickness between web and guide roller was obtained. On the other hand, the air film thickness between web and guide roller was measured by an optical sensor, and the experimental results were compared with the calculated results. Moreover, the variation of air film thickness between two layers in web winding processes was analyzed by making use of the air film thickness formula derived above. From the theoretical and experimental results obtained, the effects of air film thickness on the web transporting systems were clarified.
Subject
Surfaces, Coatings and Films,Surfaces and Interfaces,Mechanical Engineering,Mechanics of Materials
Reference6 articles.
1. Eshel
A.
, and ElrodH. G., 1965, “The Theory of Infinitely Wide Perfectly Flexible Self-Acting Foil Bearings,” ASME Journal of Basic Engineering, Vol. 87, pp. 831–836.
2. Eshel, A., 1968, “Compressibility Effects on the Infinitely Wide, Perfectly Flexible Foil Bearing,” ASME JOURNAL OF LUBRICATION TECHNOLOGY, pp. 221–225.
3. Hashimoto
H.
, 1995, “Theoretical Analysis of Experimentally Pressurized Porous Foil Bearings—Part I: In the Case of Smooth Surface Porous Shaft,” ASME JOURNAL OF TRIBOLOGY, Vol. 117, No. 1, pp. 103–111.
4. Hahimoto
H.
, 1997, “Effects of Foil Bending Rigidity on Spacing Height Characteristics of Hydrostatic Porous Foil Bearings for Web Handling Processes,” ASME JOURNAL OF TRIBOLOGY, Vol. 119, No. 2, pp. 422–427.
5. King, S. L., Funk, B. A., and Chambers, F. W., 1994, “Air Films Between a Moving Tensioned Web and a Stationary Support Cylinder,” Proc. of Int. Conf. of Web Handling.
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