Computational Analysis of Mine Blast on a Commercial Vehicle Structure

Abstract

The kinematic response (including plastic deformation, failure initiation and fracture) of a soft-skinned vehicle (represented by a F800 series single-unit truck) to the detonation of a landmine shallow-buried in (either dry or saturated sand) underneath the vehicle's front right wheel is analyzed computationally. 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 show the differences in the blast loads resulting from the landmine detonation in dry and saturated sand as well as the associated kinematic response of the vehicle. It is noted that 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. Tailoring the vehicle modal response may result in more desirable modes of failure.

A finite element analysis of pneumatic‐tire/sand interactions during off‐road vehicle travel

“…As mentioned earlier, our recently developed model for sand, the CU-ARL sand model (Grujicic et al, 2007), was used in the present work. This model was presented in great details in Grujicic et al (2007) and, hence, only a brief MMMS 6,2 overview of it will be given in this section. Within the CU-ARL sand model, the relationships between the flow variables (pressure, mass-density, energy-density, temperature, etc.)…”

“…As stated earlier, a complete definition of all CU-ARL sand-model relations and the model parameterization can be found in Grujicic et al (2007).…”

“…Within ABAQUS/Explicit, the Lagrange approach is used. In Grujicic et al (2007), a brief discussion was given of how the governing differential equations and the materials' constitutive models define a self-consistent system of equations for the dependent variables (nodal displacements, nodal velocities, element material densities and element internal energy densities).…”

Numerical study of selected military vehicle chassis subjected to blast loading in terms of tire strength improving

“…Problems of blast wave interaction with vehicle structures have been commonly simulated using numerical methods [5][6][7][8][9][10]. Basically the explicit Finite Element (FE) code is used with three major methods of blast loading modelling implementation: ConWep function [5,6], Smoothed Particle Hydrodynamics (SPH) method [7,8] and the most sophisticated multi material Arbitrary Lagrangian-Eulerian (MM-ALE) formulation [9,10] procedure, which was also adopted in the presented paper.…”

The effect of up‐armoring of the high‐mobility multi‐purpose wheeled vehicle (HMMWV) on the off‐road vehicle performance

“…Consequently, experimental testing programs are gradually being complemented by computational engineering analyses and simulations. In recent years, major advances have been made in modeling entire vehicles and their performance under various standard driving and extreme maneuvering conditions (Grujicic et al, 2007(Grujicic et al, , 2008b, the constituent response of the materials under high deformation-rate, large-deformation conditions, and the interactions between deformable solids and between fluids and solids (Grujicic et al, 2007(Grujicic et al, , 2008b. In particular, these models have enabled the coupling between Eulerian representations (typically applied to the gaseous and liquid domains) and Lagrange representations (typically applied to solid domains).…”