Investigation of dynamic response of a mannequin in a vehicle exposed to land mine blast

Abstract

Explosive devices are serious threats for armored vehicles and occupants. Following detonation of a high explosive, blast loads, which are transferred through shock waves to the vehicle hull, might potentially cause severe injuries on the body parts. Anthropomorphic test devices (ATDs) allow for injury assessment of occupants in armored vehicles subjected to land mine explosion in accordance with injury criteria standards. This study examines the emerging role of numerical simulations in the context of survivability of combat vehicles in modern warfare. The objective of this paper is to contribute to the understanding of numerical simulation for dynamic response of human dummies seated in armored vehicles subjected to land mine by comparing the performance of Hybrid-III 50th percentile ATD in numerical simulation with that of full-scale blast testing. Therefore, force and acceleration data were collected from critical body parts; tibia, pelvis, lumber spine, upper neck, and head of the mannequin in blast testing. Those data were compared with numerical simulation results. The numerical simulations were performed in LS-DYNA using CONWEP blast loading method. It was found that the numerical simulation results are in accord with those obtained from blast testing.

Study on physiological injuries of occupants under vertical impact loads

“…According to NATO STANAG 4569 and AEP-55 VOL 2 standards, the DRI limit is 17.7, corresponding to a 10% probability of AIS 2 spinal injury. At this point, the maximum compression of the spine is approximately 6.2 mm, and under this load, the spine faces the risk of spinous and transverse process fractures [14,15]. The protection goal for vehicle occupants should aim to minimize the DRI value.…”