Computational Analysis of Mine Blast on a Commercial Vehicle Structure

It is well established that light-armored and soft-skinned vehicles are highly vulnerable to anti-vehicular mine blasts. Traditionally, extensive experimental test programs are employed during the development of anti-mine protection systems aimed at reducing the vulnerability of vehicles and vehicle occupants to mine blasts. The kinematic response of a soft-skinned vehicle to the detonation of a land mine that is buried in either dry or saturated shallow sand underneath the vehicle’s front right wheel is computationally analyzed in this paper. The kinetic response includes plastic deformation, failure initiation and fracture of a F800 series truck. The computational analysis included the interactions of the gaseous detonation products and the sand ejecta with the vehicle and the transient non-linear dynamics response of the vehicle. A frequency analysis of the pressure versus time signals and visual observation clearly shows the differences in the blast loads that result from the land mine detonation in dry and saturated sand as well as the associated kinematic response of the vehicle. The dominant vehicle structural response to the blast is similar to the first torsional structural mode shape obtained through an eigenvalue analysis of the system. The vehicle modal response may be tailored to result in more desirable modes of failure. The objective of the present work is to develop the basic framework for combining computational fluid dynamics with the computational structural dynamics in order to gain more insight into the complex phenomena accompanying detonation of a shallow-buried mine in the vicinity of a vehicle.

Language

  • English

Media Info

  • Media Type: Digital/other
  • Features: Figures; References;
  • Pagination: 30p

Subject/Index Terms

Filing Info

  • Accession Number: 01529565
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jun 2 2014 10:13AM