Nested ring energy absorbers absorb most of the kinetic energy of an impact in an irreversible manner, reducing the damage to the human body or cargo inside the carrier in a collision. Compared to conventional single ring, nested ring can greatly increase the specific energy absorption (SEA) without significantly increasing the cost. This paper proposes a new design idea for the nested ring structure, which forms a new design by rotating the traditional configuration. Since the symmetry is broken, the deformation mode is asymmetric. Both experimental tests and finite element simulations are performed. The experimental results match the simulation results with less than 5% deviation, demonstrating the new design improves energy absorption capacity by 7% compared to previous nested ring designs.

嵌套环吸能器以不可逆的方式吸收大部分冲击动能，减少碰撞时对人体或运载工具内货物的伤害。与传统的单环相比，嵌套环可以在不显着增加成本的情况下大大提高比能量吸收（SEA）。本文针对嵌套环结构提出了一种新的设计思路，通过旋转传统的构型形成新的设计。由于对称性被破坏，变形模式是不对称的。进行了实验测试和有限元模拟。实验结果与仿真结果吻合，偏差小于5%，表明新设计与之前的嵌套环设计相比，能量吸收能力提高了7%。