A Numerical Analysis of the Effect of Erosion Strain on Ballistic Performance Prediction

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Authors
  1. Nandlall, D.
  2. Wong, G.
Corporate Authors
Defence Research Establishment Valcartier, Valcartier QUE (CAN);British Columbia Univ, Vancouver BC (CAN)
Abstract
This memorandum examines the effect of the erosion strain parameter on the numerical simulation results of the penetration of two different projectile/target systems. This parameter permits the failure of the material and numerically allows the penetration of the target. The firts system examined consists of the SS109 5.56-mm bullet striking a 10.8-mm 6061-T6 aluminium target while the second system consists of the M80 7.62-mm bullet striking a 76.2-mm semi-infinite aluminium target. For the SS109 5.56-mm case, it was found that the ballistic limit increased significantly as the erosion strain is increased above 0.4, but as it reaches about 1.3, it becomes less and less dependent on the erosion strain. In the case of the M80 7.62-mm projectile, both the depth of penetration and crater volume were examined as a function of the erosion strain. For erosion strains ranging from 0.5 to 3.0 a significant dependence of the penetration results on the erosion strain was observed to be within an acceptable range of the experimental value.
Keywords
Bullet impact;Hydrocodes;High Velocity Impact;Hydrocode simulation;Numerical simulation;Dyna
Report Number
DREV-TM-1999-055 — Technical Memorandum
Date of publication
01 Aug 1999
Number of Pages
31
DSTKIM No
99-01654
CANDIS No
511173
Format(s):
Hardcopy;Document Image stored on Optical Disk

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