The Journal of Science and Engineering Applications (JSEA)

Abstract

Crashworthiness improvement of under-ride guard system of heavy vehicle design is a highly challenge duty 
to save passengers life and prevent sever injures of small car in collisions. As a consequence of absence or 
lack of the powerful under-run guard connected to the rear, side of trucks, trailers and semi-trailers, back 
under-ride accidents are in charge of a huge death numbers in all the world. This study concentrates on 
improving Rear Underrun Protection Device (RUPD) structure utilizing Finite Element Analysis apparatus 
like LS-DYNA. Two designs of under-ride guard devise crushed using Toyota Yaris (2010) with different 
impact speeds 45km/h and 63km/h. A zero passenger compartment intrusion (PCI) is accomplished with the 
investment of the recently outlined under-ride guard for rear of trucks. The new under-ride guard model is 
validated utilizing FMVSS 223/224 regulations. The new design achieved the goal of decreasing the 
acceleration beyond the limits, which leads to decrease the  
head injury criteria (HIC) to (373.250).