Study of Bio-Mechanical Injury Criteria and Side Impact Analysis of A-B-C Pillar

Abstract

W ith the advent of better engines and brakes in the present day automotive, accelerations and decelerations are reaching higher rates than ever before, this call for the better means of pedestrian and passenger safety during vehicle collisions. Through this work, an attempt has been made to collect the data and to understand the various categories of Bio-mechanical injury criteria for different types of accidents. In this work a study has been carried out know the different injury criteria, the descriptions of the injury criteria, the applicability of the same in various situations of vehicle collision. A brief description of the evolution of the methods of gauging the injury criteria and also calculating the same are presented in the work. The various real life obstacles and the effects of the collisions with the same are to be studied for enhancing the occupant safety, for the different types of impacts during a collision, the side impact has been proven to be of higher risk than other modes of impacts. A study has been carried out to know the behavior of the vehicle under side impact of the rigid pole is being simulated using LS-DYNA. The various non-linear deformations under transient dynamic impact loads are simulated for the meshed discretized model. The impact at critical location of the car body, at the A-pillar, B-Pillar and the C-Pillar are the three impact locations under study. The deformation results and its behaviors along length of the vehicle are brought out in terms of resultant contact forces, accelerations, deformations energy plots. The comparison of nature and extent of damage along the vehicle side are presented for the velocity and the obstacle. Finally, the locations of maximum intrusion and its effects on the passengers are discussed.