Collapse Mechanism Analysis in the Design of Superstructure Vehicle

International Engineering Research and Innovation Symposium

Nor, M.K. Mohd^1

Crashworthiness and Collision Research Group, Engineering Mechanics Department, Faculty of Mechanical and Manufacturing Engineering, Universiti Tun Hussein Onn Malaysia, Parit Raja, Johor, Batu Pahat

86400, Malaysia^1

关键词: Catastrophic consequences;    Collapse mechanism;    Collapse mode;    EU directives;    Fatal Injury;    Malaysian governments;    Passenger compartment;    Side walls;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/160/1/012007/pdf
DOI  :  10.1088/1757-899X/160/1/012007

来源: IOP

【 摘 要 】

The EU directive 2001/85/EC is an official European text which describes the specifications for "single deck class II and III vehicles" required to be approved by the regulation UN/ECE no.66 (R66). To prevent the catastrophic consequences by occupant during an accident, the Malaysian government has reinforced the same regulation upon superstructure construction. This paper discusses collapse mechanism analysis of a superstructure vehicle using a Crash D nonlinear analysis computer program based on this regulation. The analysis starts by hand calculation to define the required energy absorption by the chosen structure. Simple calculations were then performed to define the weakest collapse mechanism after undesirable collapse modes are eliminated. There are few factors highlighted in this work to pass the regulation. Using the selected cross section, Crash D simulation showed a good result. Generally, the deformation is linearly correlates to the energy absorption for the structure with low stiffness. Failure of critical members such as vertical lower side wall must be avoided to sustain safety of the passenger compartment and prevent from severe and fatal injuries to the trapped occupant.