Novel Design of Impact Attenuator for an 'Eco Challenge' Car

Amir Radzi Ab Ghani; Ramlan Kasiran; Mohd Shahriman Adenan; Mohd Haniff Mat; Rizal Effendy Mohd Nasir; Mohd Faizal Mohamad; Wan Ahmad Najmi Wan Mohamed

doi:10.4028/www.scientific.net/AMM.165.237

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 165Novel Design of Impact Attenuator for an 'Eco...

Novel Design of Impact Attenuator for an 'Eco Challenge' Car

Abstract:

Thin-walled metallic tubular structures are generally used as impact energy absorber in automotive structures due to their ease of fabrication and installation, high energy absorption capacity and long stroke. However, unlike a normal passenger car where the impact energy can be distributed throughout the whole structure, the impact energy absorbing system of an Eco-Challenge car is confined within a limited space on the front bulkhead. The challenge is to develop an impact attenuator system that can effectively absorb the impact energy within the given space and fulfil the specified rate of deceleration. This new design utilized the standard Aluminium 6063 circular tubes, cut and welded into specific configurations i.e. stacked toroidal tubes with central axial tube sandwiched between two flat plates. Two configurations were investigated; circular and square toroids. Explicit non-linear FEA software was used to determine the impact response i.e. energy absorption, impact force and rate of deceleration. Both configurations showed promising results but the configuration that can be readily fabricated was chosen as the final design.

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Periodical:

Applied Mechanics and Materials (Volume 165)

Pages:

237-241

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.165.237

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Online since:

April 2012

Authors:

Amir Radzi Ab Ghani, Ramlan Kasiran, Mohd Shahriman Adenan, Mohd Haniff Mat, Rizal Effendy Mohd Nasir, Mohd Faizal Mohamad, Wan Ahmad Najmi Wan Mohamed

Keywords:

Energy Absorption, Finite Element Analysis (FEA), Impact Attenuator, Impact Response, Progressive Failure, Structural Crashworthiness

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