Breathing Vibrations of a Horizontal Circular Cylindrical Tank Shell, Partially Filled With Liquid

Author:

Amabili M.1,Dalpiaz G.1

Affiliation:

1. Dipartimento di Meccanica, Universita` di Ancona, via Brecce Bianche, 60131 Ancona, Italy

Abstract

A theoretical approach to study breathing vibrations of cylindrical shells with horizontal axis, partially filled with liquid, is delineated and the results of some modal tests conducted on an industrially-manufactured tank are presented and discussed. The good agreement between theoretical and experimental results is preliminarily verified in the case of both an empty and completely full shell, in order to confirm that it is possible to apply the theoretical approach to real structures. The modal properties of a partially-filled shell as a function of liquid level are then experimentally studied, the mode shapes are compared using the Modal Assurance Criterium and a qualitative explanation of the dynamic behavior is proposed.

Publisher

ASME International

Subject

General Engineering

Reference14 articles.

1. Allemang, R., Brown, D., and Rost, R., 1988, “Frequency Response Function Estimation,” Proceedings of the 13th International Seminar on Modal Analysis, Katholieke Universiteit Leuven, Leuven, Basic Course, Part I, pp. 52–79.

2. Berry J. G. , and ReissnerE., 1958, “The Effect of an Internal Compressible Fluid Column on the Breathing Vibrations of a Thin Pressurized Cylindrical Shell,” Journal of the Aeronautical Sciences, Vol. 25, pp. 288–294.

3. Donnell, L. H., 1938, “A Discussion of Thin Shell Theory,” Proceedings, 5th International Congress of Applied Mechanics, John Wiley, NY., pp. 66–70.

4. Ewins, D. J., 1986, Modal Testing: Theory and Practice, Research Studies Press, Letchworth, pp. 180–186 and 225.

5. Koga T. , and TsushimaM., 1990, “Breathing Vibrations of a Liquid-Filled Circular Cylindrical Shell,” International Journal of Solids and Structures, Vol. 26, Nos. 9/10, pp. 1005–1015.

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