This work presents a comprehensive failure mechanism study of the bi-directionally corrugated panel (DCP) structures inspired by the telson of mantis shrimp. The DCP structures were fabricated by selective laser melting (SLM) with AlSi10Mg powder. The influence of key structural parameters, namely wave number (N), on the compressive behaviours, stress distribution, deformation modes and fracture mechanism of SLM-processed DCP components was systematically investigated. Results revealed that with the increase of wave number (N), the structural expansion effect became more obvious, which led to the disappearance of the plateau region on the compressive force-displacement curve, the decrease of specific energy absorption (SEA) growth rate and the energy absorption per periodicity cell. Three deformation modes were observed, namely full-folded mode (N = 4), transitional mode (N = 5), and global-buckling mode (N = 6). Finally, the fracture morphologies elucidated that the fracture mechanism changed from ductile fracture to brittle fracture with the increase of wave number.

这项工作提出了对螳螂虾telson启发的双向波纹板（DCP）结构的全面失效机制研究。通过用AlSi10Mg粉末进行选择性激光熔化（SLM）来制造DCP结构。系统地研究了关键结构参数，即波数（N）对SLM加工DCP部件的压缩行为，应力分布，变形模式和断裂机理的影响。结果表明，随着波数（N）的增加，结构的膨胀效应变得更加明显，导致平台区域在压缩力-位移曲线上消失，比能量吸收（SEA）降低。）增长率和每个周期性细胞的能量吸收。观察到三种变形模式，即全折叠模式（N  = 4），过渡模式（N  = 5）和整体屈曲模式（N  = 6）。最终，断口形貌表明，随着波数的增加，断口的断裂机制从韧性断裂变为脆性断裂。