Dynamic Response of Submerged Shells with Appendages
Publication: Journal of Engineering Mechanics
Volume 116, Issue 10
Abstract
To determine the dynamic response of submerged structures with complex internal structures to shock loading, it is often necessary to uncouple the equations of motion of the infinite surrounding fluid from those of the structure by means of acoustic approximations. The addition of external appendages to a submerged convex structure can create local concavities in the structure's surface. When subjected to pressure waves traveling through the surrounding fluid, these concavities permit multiple reflections, which cannot be tracked using the acoustic approximations on the wet surface of the structure. By applying an acoustic approximation to a convex fluid surface circumscribing the structure, a method is developed that can be used to compute the motion of the structure. It is found that the multiple reflections caused by concavities significantly affect the structural response when the size of the appendages approaches or exceeds the characteristic dimensions of the convex structure.
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Information & Authors
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Published In
Journal of Engineering Mechanics
Volume 116 • Issue 10 • October 1990
Pages: 2275 - 2292
Copyright
Copyright © 1990 ASCE.
History
Published online: Oct 1, 1990
Published in print: Oct 1990
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