The dynamic crushing behaviors of FCC lattice structures with various rotation angles are explored by numerical simulations. According to the localization band formed by the cell collapse, several deformation modes are distinguished. The effects of the orientation angle and the crushing velocity on the mechanical properties of the lattice are investigated. It is shown that the deformation mode depends strongly on the orientation angle and the impact velocity, which can be plotted on a mode classification map. It also indicates that there exists an optimal orientation angle of the FCC lattice structure which corresponds to the highest plateau stress and thus the best energy absorption capacity.

中文翻译：

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不同取向角FCC晶格结构的力学性能和能量吸收

通过数值模拟研究了不同旋转角度的 FCC 晶格结构的动态破碎行为。根据细胞坍塌形成的定位带，可以区分几种变形模式。研究了取向角和破碎速度对晶格力学性能的影响。结果表明，变形模式强烈依赖于方向角和冲击速度，这可以绘制在模式分类图上。这也表明FCC晶格结构存在一个最佳取向角，对应于最高的平台应力，从而具有最佳的能量吸收能力。