Mechanical Response of New Configurations Formed After Rotation of Triple Intermittent Nested Ring

Abstract

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.