Upgrade on the Crashworthiness of RUPD For Heavy Vehicle

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 number of these tragedies passing consistently all through the world. This study concentrates on improving Rear Underrun Protection Device (RUPD) structure utilizing Finite Element Analysis apparatus such as LS-DYNA. Three designs of under-ride guard devise crushed using Toyota Yaris (2010) with different impact speeds 45km/h, 54km/h and 63km/h were tested in this work. A zero passenger compartment intrusion (PCI) is accomplished with the investment of the recently outlined under-ride guard for rear of trucks. The RUPD model A has shown a better energy absorption compared to the basic (control) RUPD C and the model B. The car safety effectiveness can act efficiently by giving this RUPD assembly model A to heavy trucks. In many countries, RUPD assembly needs to pass the regulation set by FMVSS 223 to achieve the safety requirement to preserve under running of the passenger car. For model A, the maximum displacement of RUPD assembly was found to be lower than model B and model C. The final design (A) has achieved the goal to meet the requirements of reaction force with a good stability compared to the others two designs. The new under-ride guard models are validated utilizing FMVSS 223/224 regulations.