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Abstract
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In this paper, the efficiency of a new hybrid design of energy absorber systems is investigated to improve the capability of
the system in absorbing the kinetic energy of vehicles in case of a crash. This setup implements two well-known energy
absorption mechanisms simultaneously to enhance the energy dissipation capacity of the system while occupying a limited
constant space. The system consists of two individual mechanisms, expansion of a circular tube accompanied by buckling
of two inner tubes, which dissipates the energy through friction and plastic deformations. This study comprises several case
studies surveyed under identical loading conditions. Experimental results are utilized to validate finite element simulations
thereby analyzing several case studies so as to achieve the maximum efficiency of the system via geometrical optimizations.
This study shows promising outcomes about the improvement in the system capacity in energy absorption while utilizing
hybrid systems.
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