This paper proposed a multi-layered bi-directionally corrugated plates structure (BCPS) for energy absorption. Quasi-static compression experiments and finite element method (FEM) were used to investigate the crushing performance of the multi-layered BCPS. The results showed that the multi-layered BCPS had very small initial peak crushing force, and the fluctuation of force was very small during the whole compression process. These characteristics made the multi-layered BCPS more advantageous in crashworthiness than traditional structures. It was also found that the crushing performance of the multi-layered BCPS was very sensitive to the geometrical parameters, such as the number of the cellular structures along the width n_c, the number of plates n_l, and the ratio of width of small square w_s to width of big square w_b of the pyramid cell η. Therefore, parameters optimization was carried out using the Multi-Objective Genetic Algorithm to find the best geometrical configuration of the structure. After optimization, the optimum parameters n_c = 5, n_l = 11 and η = 0.38 was obtained. The specific energy absorption increased by 143.76% compared with the initial configuration.

本文提出了一种用于能量吸收的多层双向波纹板结构（BCPS）。采用准静态压缩实验和有限元法（FEM）研究多层BCPS的破碎性能。结果表明，多层BCPS具有很小的初始峰值破碎力，并且在整个压缩过程中力的波动很小。这些特性使得多层BCPS在耐撞性方面比传统结构更具优势。研究还发现，多层BCPS的破碎性能对几何参数非常敏感，例如沿宽度方向的蜂窝结构数量n _c、板片数量n _l以及小块宽度的比率。正方形w _s到金字塔单元η的大正方形w _b的宽度。因此，利用多目标遗传算法进行参数优化，以找到结构的最佳几何配置。优化后得到最优参数n _c = 5、n _l = 11、η = 0.38。比能量吸收比初始配置增加了143.76%。