Dynamic response of cylindrical shells to underwater end-on explosion
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Authors
Boticario, Luis A.
Subjects
Underwater shock
Advisors
Kwon, Young W.
Date of Issue
1991-12
Date
December 1991
Publisher
Monterey, California. Naval Postgraduate School
Language
en_US
Abstract
Both numerical and experimental analyses were performed to investigate underwater shock propagation and the induced nonlinear response of cylindrical shells with end caps. The cylinders were subjected to shocks from explosive charges at 12 inches (near-field) and 28 feet (far-field) from the cylinder. And underwater shock test was also performed with the far-field explosion. The numerical results were compared with the experimental data. Stresses and strains occurring in the structure as well as the pressure in the water were studied. The far-field explosion caused the largest circumferential deformations close to both end plates and as accordion oscillatory motion of the cylindrical shell. the near-field explosion caused severe plastic deformation in the neighborhood of the closest end plate to the charge. The stiffeners had, as expected, a large effect on the circumferential stresses than on the longitudinal stresses. The measured and calculated strains agreed well qualitatively near the remote end plate from the charge.
Type
Thesis
Description
Series/Report No
Department
Mechanical Engineering
Organization
Naval Postgraduate School
Identifiers
NPS Report Number
Sponsors
Funder
Format
73 p.
Citation
Distribution Statement
Approved for public release; distribution is unlimited.
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.