Based on the symmetric re-entrant honeycomb (S-RH) structure with negative Poisson’s ratios, a novel asymmetric and rotatable re-entrant honeycomb (AR-RH) structure was proposed. Both the S-RH structure and AR-RH structure were produced by the 3D printing technology. Through experimental test and finite element simulation, the deformation mechanism and energy absorption characteristics of the AR-RH structure and the S-RH structure with negative Poisson’s ratios at different impact velocities were compared. The experimental test and finite element simulation results show that the novel AR-RH structure with negative Poisson’s ratios has stronger energy absorption capacity than the S-RH structure, and it has been verified that the rotatability of AR-RH can indeed absorb energy. Furthermore, the degree of asymmetry of the AR-RH structure was discussed.

基于具有负泊松比的对称凹角蜂窝（S-RH）结构，提出了一种新型的不对称且可旋转的凹角蜂窝（AR-RH）结构。S-RH结构和AR-RH结构都是通过3D打印技术生产的。通过实验测试和有限元模拟，比较了不同冲击速度下具有负泊松比的AR-RH结构和S-RH结构的变形机理和能量吸收特性。实验测试和有限元模拟结果表明，新型泊松比为负的AR-RH结构比S-RH结构具有更强的能量吸收能力，并且已经证明AR-RH的可旋转性确实可以吸收能量。此外，讨论了AR-RH结构的不对称度。