|About this Abstract
||2022 TMS Annual Meeting & Exhibition
||Investigation on Mechanical Properties of Honeycomb-based Cellular Solids and Cylindrical Shells with Structural Hierarchy
||Ching-Han Hsu, Cheng-Che Tung, Po-Yu Chen
|On-Site Speaker (Planned)
Honeycombs feature outstanding lightweight characteristics, excellent energy absorption capacity, and tailorable mechanical properties. This study aims to propose novel designs which composed of conventional cellular structures, structural hierarchy, and re-entrant honeycombs with negative Poisson’s ratio, and investigate the uniaxially compressive behavior of the sheets and the rolled-up cylindrical shells. The 3D printing technology and simulation come in handy for an integrated approach to verify theoretical and experimental results. To elucidate the fundamental structure-property relations of the honeycomb lattice cylindrical shells, systematic parametric studies of different wall thickness, the number of repeating units, and Poisson’s ratio are evaluated. The investigation methods include compression test, cyclic test, digital image correlation, and finite element analysis. The novel designs can be used as the cores of sandwich composites morphed into cylindrical shapes and may be practical in various applications ranging from aerospace to domestic as impact resistance structures with lightweight and recoverable properties.
||Additive Manufacturing, Mechanical Properties, Computational Materials Science & Engineering