Generation and Use of Simplified Uplift Shape Functions in Unanchored Cylindrical Tanks

[+] Author and Article Information
D. T. Lau, X. Zeng

Department of Civil and Environmental Engineering, Carleton University, Ottawa, Ontario, Canada K1S 5B6

J. Pressure Vessel Technol 118(3), 278-286 (Aug 01, 1996) (9 pages) doi:10.1115/1.2842190 History: Received March 31, 1994; Revised November 27, 1995; Online February 11, 2008


This paper presents a simplified mathematical model for modeling the flexible bottom plate in an unanchored cylindrical liquid storage tank partially uplifted under the static tilt condition. In this model, the cylindrical tank is divided into substructures according to the deformation-resistant mechanisms involved. The modeling of each substructure is based on the Ritz formulation. Numerical results are presented and compared with reported experimental measurements. The results show that the simplified mathematical model is efficient. Practical and accurate results can be obtained using the model leading to a better understanding of the uplift mechanism. The relationship of the uplift behavior with the static tilt angle is also presented and discussed.

Copyright © 1996 by The American Society of Mechanical Engineers
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