In this study, a series of in-plane hexagonal honeycombs with different Poisson's ratio induced by topological diversity are studied, considering re-entrant, semi-re-entrant and convex cells, respectively. The crushing strength of honeycomb in terms of Poisson's ratio is firstly presented. In the previous research, we have studied the compression performance of honeycomb with different negative Poisson's ratio. In this study, a comparative study on the local impact resistance of different sandwich panels is conducted by considering a spherical projectile with low to medium impact speed. Some critical criteria ( i.e. local indentation profile, global deflection, impact force and energy absorption) are adopted to analyze the impact resistance. Finally, an influential mechanism of Poisson's ratio on the local impact resistance of sandwich panel is studied by considering the variation of core strength and post-impact collapse behavior.

中文翻译：

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在中低冲击载荷下具有不同泊松比的平面蜂窝状夹层板

在这项研究中，研究了一系列由拓扑多样性引起的具有不同泊松比的平面六边形蜂窝，分别考虑了凹角，半凹角和凸单元。首先介绍了以泊松比表示的蜂窝状抗碎强度。在先前的研究中，我们研究了具有不同负泊松比的蜂窝的压缩性能。在这项研究中，通过考虑具有低至中等冲击速度的球形弹丸，对不同夹芯板的局部抗冲击性进行了比较研究。采用一些关键标准（即局部压痕轮廓，整体挠度，冲击力和能量吸收）来分析抗冲击性。最后，泊松的影响机制