A Numerical Analysis of the Effect of Surrogate Anti-Tank Mine Blasts on the M113

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Authors
  1. Williams, K.
  2. Poon, K.
Corporate Authors
Defence Research Establishment Valcartier, Valcartier QUE (CAN)
Abstract
This memorandum summarises numerical analyses which were performed to investigate the use of a simple empirical impulse loading model as a tool for modelling blast mine loading on a structure. The empirical model was used to generate the initial velocity boundary condition for an explicit dynamic finite element analysis of the floor deformation of a simulated M113 MTVL (upgraded floor protection) subject to the detonation of a buried 7.5-kg C-4 mine surrogate. Results showed an over-prediction of the peak residual floor deflection. Reducing the impulse by 33% gave excellent agreement with experimental results. The need to scale the impulse is attributed to energy absorption in the soil through mechanisms that are not accounted for in the empirical model. Moisture content and soil type, for example, are known to significantly affect the apparent strength of blast mines.
Keywords
Hydrocodes;LS-DYNA3D;Mine blast;Numerical simulation;Hydrocode simulation;M113;MTVL;Blast impulse;Floor deflection
Report Number
DREV-TM-2000-007 — Technical Memorandum
Date of publication
01 Mar 2000
Number of Pages
35
DSTKIM No
CA001493
CANDIS No
513131
Format(s):
Hardcopy;Document Image stored on Optical Disk

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