Buckling of Force-Excited Liquid-Filled Shells

[+] Author and Article Information
R. A. Uras

Reactor Engineering Division, Argonne National Laboratory, Argonne, IL 60439

W. K. Liu

Department of Mechanical Engineering, Northwestern University, Evanston, IL 60208

J. Pressure Vessel Technol 113(3), 418-422 (Aug 01, 1991) (5 pages) doi:10.1115/1.2928776 History: Received June 10, 1990; Revised December 14, 1990; Online June 17, 2008


The matrix equation of motion for liquid-filled shells with a particular reference to the influence of ground excitation are derived through a Galerkin/finite element discretization procedure. The modal coupling among the various combinations of axial and circumferential modes are identified. The equations for the dynamic buckling analysis of liquid-filled shells are presented. The buckling criteria of liquid-filled shells subjected to horizontal ground excitation are established. A comparison to available experimental results gives strikingly good agreement. The importance of modal interaction in the axial as well as circumferential directions is also demonstrated. This provides guidelines for a better understanding of dynamic buckling of liquid-filled shells.

Copyright © 1991 by The American Society of Mechanical Engineers
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