Abstract
Today, many underwater explosion (UNDEX) shock problems are solved using direct transient analysis methods applied to detailed finite element models. Solution methodologies are diverse and complex, and necessarily include detailed representations of both the dynamic loading and the structure. As a result of these computational complexities, it is imperative that all such solution strategies also employ simple tools to benchmark and “ground” the more complex solutions. This paper illustrates the use of simple bounding solutions in generating reliable estimates of the global dynamic response of surface ship and submarine structures subjected to underwater shock. Three well documented methodologies are presented, including the Taylor flat plate analogy for both air- and water-backed plates, the peak translational velocity (PTV) method, and the application of the conservation of momentum principle to estimating the vertical kickoff velocity of floating structures (spar buoy approach). Derivations of the governing equations associated with each of these solution strategies are presented, along with a description of the appropriate ranges of applicability. Finally, practical applications of these “bounding” methods are summarized.
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References
Cole, Robert H., “Underwater Explosions,” Princeton University Press, 1st Edition, 1948.
Taylor, G. I., F.R.S., “The Pressure and Impulse of Submarine Explosion Waves on Plates,” Ministry of Home Security, R.C. 235, July 1941.
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Costanzo, Frederick A., and John D. Gordon, “A Solution to the Axisymmetric Bulk Cavitation Problem,” 53rd Shock and Vibration Bulletin, Shock and Vibration Information Center, Naval Research Laboratory, Washington, D.C., May 1983.
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© 2011 Springer Science+Business Media, LLC
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Costanzo, F.A. (2011). Simple Tools for Simulating Structural Response to Underwater Explosions. In: Proulx, T. (eds) Rotating Machinery, Structural Health Monitoring, Shock and Vibration, Volume 5. Conference Proceedings of the Society for Experimental Mechanics Series. Springer, New York, NY. https://doi.org/10.1007/978-1-4419-9428-8_40
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DOI: https://doi.org/10.1007/978-1-4419-9428-8_40
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Publisher Name: Springer, New York, NY
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Online ISBN: 978-1-4419-9428-8
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