A computational analysis of survivability of a pick-up truck subjected to mine detonation loads

摘要

Purpose - The purpose of this paper is to analyze, computationally, the kinematic response (including large-scale rotation and deformation, buckling, plastic yielding, failure initiation, fracture and fragmentation) of a pick-up truck to the detonation of a landmine (shallow-buried in one of six different soils, i.e. either sand, clay-laden sand or sandy gravel, each in either dry or water-saturated conditions, and detonated underneath the vehicle) using ANSYS/Autodyn, a general-purpose transient non-linear dynamics analysis software. Design/methodology/approach - The computational analysis, using ANSYS/Autodyn, a general-purpose transient non-linear dynamics analysis software, included the interactions of the . gaseeus detonation products and the sand ejecta with the vehicle and the transient non-linear dynamics response of the vehicle. Findings - The results obtained 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 was also found that the low frequency content of the blast loads which can match the whole-vehicle eigen modes is quite small so that resonance plays a minor role in the kinematic/ballistic response of the vehicle. Furthermore, it was demonstrated that mine blast analytical loading functions which are often used in transient non-linear dynamic analyses have limited value when used in the analyses of a complete vehicle. Originality/value - This is the first time that the kinematic response of a pick-up truck to the detonation of a shallow-buried landmine (using a full-scale/complete model) has been analyzed computationally.