Development of Techniques for Investigating Energy Contributions to Target Deformation and Penetration During Reactive Projectile Hypervelocity Impact
Loading...
Authors
Peters, Max
Subjects
Advisors
Date of Issue
2011-07
Date
Publisher
Monterey, CA; Naval Postgraduate School
Language
Abstract
There are longstanding interests in the effects during hypervelocity penetration of projectiles and shaped charge jets through water
and through water submerged targets. The effects of apparent reaction during the penetration of reactive aluminum jets through an inert
fluid and water are examined in this research, where there is an attempt to differentiate the causes of observed target deformation
and volume displacement. Specific developed routines in ANSYS AUTODYN finite element code are used to characterize the jet and
to estimate penetration for comparison with experimental results.
This reports covers shaped charge, penetration and metal combustion theory which is crucial for the determined process. The jet criteria
is examined using ANSYS AUTODYN, determining the jet characteristics occurring which are likely to have strong influences
on the penetration process. The penetration process is simulated by a special developed technique using this software. The portions
of the jet responsible for the deformation and the liquid displacement are identified, and the fraction of the energy causing the plastic
deformation is estimated using 3D Explicit Dynamics WORKBENCH code. Experimental and simulation results are compared and
possible reasons for observed differences are demonstrated and evaluated. The predictions are found to be in good agreement with
the tests.
Type
Description
Series/Report No
Department
Organization
Graduate School of Operational and Information Sciences (GSOIS)
Naval Postgraduate School (U.S.)
Identifiers
NPS Report Number
NPS-PH-11-006
Sponsors
Helmut Schmidt University
University of the Federal Armed Forces Hamburg
Holstenhofweg 85, 22043 Hamburg
Germany
Funder
Format
Citation
Distribution Statement
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.