A Numerical Analysis of Mine Blast Effects on Simplified Target Geometries: Validation of Loading Models

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Authors
  1. Williams, K.
  2. McClennan, S.
Corporate Authors
Defence R&D Canada - Valcartier, Valcartier QUE (CAN);British Columbia Univ, Vancouver BC (CAN)
Abstract
An ongoing program at Defence R&D Canada to reduce the vulnerability of Light Armoured Vehicle (LAVs) to anti-vehicular blast mines is relying heavily on LS-DYNA to help design and optimize add-on arm our systems. A significant challenge in the numerical modeling work is the development of an accurate, or at least representative, loading history for the pressure and momentum transfer from the detonation of a buried blast mine. An option that is attractive from the point of view of simplicity of implementation and computation time is an empirically based loading model. The LS-DYNA implementation of the CONWEP blast equations (*LOAD_BLAST) is one such example. While some authors have used this model to predict the effects of mine blasts on vehicle structures, there are significant limitations in this model. A more advanced empirical model for predicting the effects of blast mines on structures was developed for an U.S. Army Tank Automotive Command (TACOM) by Southwest Research Institute. This model has been implemented by the Defence R&D Canada – Valcartier (DRDC Valcartier) in a pre-processor for LS-DYNA. A parametric study has been conducted using this implementation of the impulse model and the results are compared to those obtained from the CONWEP blast model. Validation is based on a series of experiments conducted at DRDC Valcartier using square aluminium and steel test panels subjected to detonations of buried charges (surrogate mines) of 6 kg of C-4 explosive.

Il y a un résumé en français ici.

Keywords
Blast overpressure;Floor deflection;Hydrocode simulation;LAV (Light Armored Vehicle);Mine blast
Report Number
DRDC-VALCARTIER-TM-2002-260 — Technical Memorandum
Date of publication
08 Apr 2003
Number of Pages
40
DSTKIM No
CA022260
CANDIS No
519140
Format(s):
Hardcopy;Document Image stored on Optical Disk

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