IMPROVEMENT DESIGN OF SLEEPER COACHES FRONT STRUCTURE TO ENHANCE THE SAFETY OF HUMAN IN FRONTAL COLLISION

Abstract

Based on ECE R94 and ECE R66 standard, the sleeper coaches safety simulation model was established and human injury was analysed in sleeper coaches frontal crash was analyed by HYPERWORKS and MADYMO software. The simulation results showed that the crash acceleration of sleeper coaches very high, the passenger’s head was seriously injured. The main reasons were energy absorption of coaches head structure was very low. Based on the analysis results of injury mechanisms of passengers, the energy absorption structure of sleeper coaches front were improved. Improvement results showed that, the injury values of the passengers arcording to the requirements of European Standard ECE R94.