In this study, the compression mechanical response of tandem honeycomb cores was investigated to determine the effect of dislocation length and layer height on the compression resistance of tandem honeycomb. A series of flatwise compressive tests were carried out on single-layer and double-layer honeycombs, which showed that tandem honeycomb obtains higher equivalent elastic modulus and collapse stress, and the core assembled with dislocation can achieve almost the same collapse stress with the aligned assembled honeycombs. In addition, a mesoscale finite element modeling method was developed and used to evaluate the effect of dislocation length and layer height on the mechanical response of tandem honeycomb through parametric simulation. Overall, our results suggest that dislocation length is proportional to the collapse stress, and the layer height decides the equivalent modulus and collapse stress of tandem honeycomb, specifically, dislocation length helps achieve higher collapse stress in the tandem honeycomb of varying layer heights.

在这项研究中，研究了串联蜂窝芯的压缩力学响应，以确定位错长度和层高对串联蜂窝压缩阻力的影响。对单层和双层蜂窝进行了一系列的平面压缩试验，结果表明串联蜂窝获得了更高的等效弹性模量和坍塌应力，并且错位组装的芯体可以达到与对齐组装的几乎相同的坍塌应力。蜂窝。此外，开发了一种中尺度有限元建模方法，用于通过参数模拟评估位错长度和层高对串联蜂窝力学响应的影响。总的来说，我们的结果表明位错长度与坍塌应力成正比，