Development of Navy’s 3D mine impact burial prediction model (IMPACT35)

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Author
Chu, Peter C.
Evans, Ashley
Gilles, Anthony
Smith, Timothy
Taber, Victoria
Date
2004-05Metadata
Show full item recordAbstract
Falling of mine through air, water, and
sediment is investigated experimentally and theoretically.
Two experiments were conducted to drop cylindrical mine
with the density ratio around 1.8 into shallow water (around
13 m deep) in the Monterey Bay (Exp-1) and into the Naval
Postgraduate School’s swimming pool (Exp-2). During the
experiments, we carefully observe mine track and burial
depth while simultaneously taking gravity cores (in Exp-1).
After analyzing the gravity cores, we obtain the bottom
sediment density and shear strength profiles. The
theoretical work includes the development of 3D mine
impact burial prediction model (IMPACT35) which
contains three components: triple coordinate transform,
hydrodynamics of falling rigid object in a single medium
(air, water, or sediment) and in multiple media (air-water
and water-sediment interfaces). The model predicts the
rigid body’s trajectory in the water column and burial depth
and orientation in the sediment. The experimental data
(burial depth, sediment density and shear strength) are used
to evaluate the newly developed numerical model. The 3D model shows great improvement to the currently used US Navy’s 2D model (i.e., IMPACT28).
Description
Sixth Monterey International Symposium on Technology and Mine Problems, Society for Counter-Ordnance Technology, Monterey, California, DVD-ROM
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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.Collections
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