Transient response of a spherical shell in an acoustic medium—Comparison of exact and approximate solutions

1980 ◽  
Vol 73 (3) ◽  
pp. 447-460 ◽  
Author(s):  
N. Akkas ◽  
A.E. Engi̇n
Keyword(s):  
Spherical Shell ◽  
Transient Response ◽  
Approximate Solutions ◽  
Acoustic Medium

Dynamics of a Submerged Ring-Stiffened Spherical Shell

1971 ◽  
Vol 38 (2) ◽  
pp. 408-417 ◽  
Author(s):  
Y. K. Lou ◽  
J. M. Klosner
Keyword(s):  
Spherical Shell ◽  
Acoustic Field ◽  
Transient Behavior ◽  
Approximate Solutions ◽  
Cylindrical Wave ◽  
Shell Structures ◽  
Acoustic Medium ◽  
Dynamic Factor ◽  
Fluid Interface ◽  
Modal Expansion

The transient response of a ring-stiffened spherical shell to a sudden pressure increase in the surrounding acoustic medium is investigated. A modal expansion approach is used to analyze the shell, while the acoustic field equation is solved by invoking the Helmholtz integral. Coupling of the two fields occurs through the enforcement of continuity of the velocity components at the shell-fluid interface. Two solutions to the same problem are obtained by using plane and cylindrical wave approximations of the acoustic field. These approximate solutions fail to predict the transient behavior for the shell configuration analyzed. The result of this study indicates that a large dynamic factor must be assumed in the design of submerged, stiffened, spherical shell structures, if explosive loads are likely to be encountered.

scholarly journals Transient Response of a Fluid-Filled, Thick-Walled Spherical Shell Embedded in an Elastic Medium

2016 ◽  
Vol 12 ◽  
pp. 06004
Author(s):  
Ako Bahari ◽  
Gaëlle Lefeuve-Mesgouez ◽  
Arnaud Mesgouez ◽  
Neil Popplewell
Keyword(s):  
Spherical Shell ◽  
Elastic Medium ◽  
Transient Response

Effect of an Acoustic Medium on the Dynamic Buckling of Plates

1956 ◽  
Vol 23 (2) ◽  
pp. 201-206
Author(s):  
F. L. DiMaggio
Keyword(s):  
Elastic Plate ◽  
Infinite Plate ◽  
Approximate Solutions ◽  
Dynamic Buckling ◽  
Steel Plates ◽  
Acoustic Medium ◽  
Middle Plane ◽  
Numerical Example ◽  
Compressive Stresses ◽  
Surrounding Fluid

Abstract The effect of a surrounding fluid on the dynamic buckling of an elastic plate under suddenly applied compressive stresses in its middle plane is studied. Assuming an infinite plate supported at regular intervals and a semi-infinite acoustic medium, exact and approximate solutions are obtained. By a numerical example, it is shown that for steel plates in water, with dimensions usually encountered in ship structures, the compressibility of water can be neglected.

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