Research on the Impact Resistance and Mechanism Analysis of 3D-Printed Honeycomb-Like Structured Elastomer.

This study explored the dynamic response and impact resistance of 3D-printed honeycomb-like structured elastomers in drop tests. Using triangles as the impact-resistant units, honeycomb-like structured elastomers were designed and fabricated. Based on the drop weight impact test and FEA analysis, the dynamic response of the honeycomb-like structured elastomers during the drop impact process was investigated. Subsequently, the effects of the angle of the base angle of the triangular cells, the thickness of the sample, and the number of internal layers on the impact resistance of the honeycomb-like structured elastomers were discussed. The results indicated that an increase in the base angle would enhance structural density and impact resistance. Among these, sample T10L1A75 exhibited the best impact resistance with a peak force of 1.71 kN, which is 74.96% lower compared to the solid sample of the same thickness. Thicker elastomers provided more deformation space, thereby enhancing impact resistance. However, surpassing a certain threshold in the arrangement density of the samples could limit the buckling deformation of the internal fill walls, consequently weakening the impact resistance. Furthermore, extending the effective impact duration could offer insights for developing high-performance impact-resistant materials. [ABSTRACT FROM AUTHOR]