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.

在本文中，研究了新型能量吸收器系统混合设计的效率，以提高系统在发生碰撞时吸收车辆动能的能力。此设置同时实现两个众所周知的能量吸收机制，以增强系统的能量消散能力，同时占用有限的恒定空间。该系统由两个独立的机构组成，即圆管的膨胀并伴随两个内管的屈曲，这通过摩擦和塑性变形来耗散能量。这项研究包括在相同负载条件下进行调查的几个案例研究。实验结果用于验证有限元仿真，从而分析一些案例研究，以便通过几何优化实现系统的最大效率。