Development Of An Active Bumper System To Reduce Vehicle Crash Impact

Khairul Azri, Azlan (2009) Development Of An Active Bumper System To Reduce Vehicle Crash Impact. Project Report. UTeM, Melaka, Malaysia. (Submitted)

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Abstract

A new Active Bumper that was designed in this project is a bumper system that uses magnetorheological (MR) dampers to absorb impact energy during collision. Some of the automotive manufacturers already use shock absorption system that consist passive damper located between the bumper and the vehicle chassis. However, by using this system most of the force will be dissipate by transmitting all the impact energy through the compression of the damper and the remaining force will be transferred to the vehicle chassis. This system normally has very high static damping coefficient and cannot dissipate higher speed collision force. In this project, MR dampers were used to provide dynamic damping coefficient and reduced the crash impact and lowering the transmission of the remaining force to the vehicle body. Mathematical equations, Simulink model, and a small scale vehicle crash test were designed. The simulation results were analyzed to determine the potential benefits of the active bumper system.

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