轻量化一直是汽车产业发展的关键技术，碳纤维复合材料相对传统金属材料更加轻质高强，具有更优吸能特性，已成为一种最具潜力的汽车轻量化材料。如何在实现结构轻量化的同时保证耐撞安全性能是碳纤维复合材料在汽车领域应用的关键问题。前期预实验结果显示碳纤维复合材料结构多胞化可以有效提高结构耐撞性能，然而其设计方法和吸能机理研究并不深入，亟待解决。本项目旨在借荐自然界的仿生原理建立一套多胞结构的设计方法，自动演化出性能定制的多胞构形；建立多胞结构的精细化仿真模型并开展物理实验，揭示胞元基本元素的变形行为和失效机理，胞元间相互作用和耦合关联效应，整体结构的吸能机理；建立胞元形状、尺寸、纤维材料、铺层等因素与整体结构破坏模式和吸能的影响模型，提出最佳性能匹配和失稳控制方法。本项目的研究，对建立新型复合材料结构设计方法，完善复合材料结构破坏理论，指导轻质高性能汽车吸能装置开发具有较高的学术价值和显著的实践意义。

Lightweight has been a key technology for the development of automobile industry. The Carbon Fiber Reinforced Plastic (CFRP) is not only of lighter weight and higher strength, but also better energy absorption capability compared to the metallic material, it has become a most promising automotive lightweight material. How to ensure the lightweight while meeting the safely requirement is a key issue in the application in the automobile structures. Our recent experimental results show that the multi-cell configuration can effectively improve the energy absorption capability for structure, whereas there have been limited studies on the design approach and energy absorption mechanism for multi-cell CFRP structures, which need to solve.The project aims to establish a biomimetic design approach for the multi-cell CFRP structures, which can provide the potential multi-cell configuration programs with customized performance. Through the refinement numerical simulations and experiments, the deformation behavior and failure mehcanism of the basis elements in unit cell, the interaction mechanism and coupling effect between unit cells, the energy absorption mechanism of whole multi-cell structure will be addressed. The effects of cell shape, size, fiber materials and plies on the failure modes and energy absorption will be studied, and the approaches used to match the optimal crashworthiness characterisitcs and control the structural instability will be proposed. The project is useful for estalishing design approach for novel composite structures, expanding the damage mehcanism of composite structures and playing a key role in the development of energy absorption apparatus for automobiles.