Pitching motion of steel vehicle test body due to impact from below

Abstract

In recent years, damage by improvised explosive devices, known as IEDs, has occurred in conflict zones. Therefore, research and development of Blast Mitigating Seats for use by the occupants is needed as one of the measures to prevent IED damage. In previous studies, impacts were applied to the lower part of a reduced model of the vehicle body to accommodate the seat, and the behaviour of the vehicle body model, which displaces only vertically upwards, was considered. However, the vehicle body may be subjected to an explosive impact accompanied by vehicle body rotation, for which countermeasures are required. Therefore, the purpose of this study is to develop a seating mechanism that protects the occupants from explosive impact with vehicle body rotation.