A skull fracture, due to a composition of typical lightweight cellular structures, is the most common type of traumatic brain injury. This paper presents a systematic investigation on the failure mechanism and energy absorption of skull cellular bones under low- and medium-velocity impact loadings. Non-destructive three-dimensional micro-computed tomography (Micro-CT) is utilized to scan samples of human skull cellular bones, and relevant structural parameters are obtained to reconstruct a finite element (FE) model of these bones. Micro-structures, mechanical properties, and failure process analysis of human skull cellular bones under impact loadings are investigated. The effects of some typical parameters, such as impact velocity and angle, impactor shape and density, and various reconstructed sections on the impact behavior of human skull cellular bones are investigated. Their impact properties and energy absorption are summarized. The present work will be of great significance in understanding the mechanical mystery of human skull cellular bones under impact loading.

由于典型的轻型细胞结构的组成，颅骨骨折是颅脑外伤最常见的类型。本文对中低速冲击载荷下颅骨细胞骨骼的破坏机理和能量吸收进行了系统的研究。利用非破坏性三维显微计算机断层扫描（Micro-CT）扫描人头骨细胞骨骼的样品，并获得相关的结构参数以重建这些骨骼的有限元（FE）模型。研究了冲击载荷下人头骨细胞骨骼的微观结构，力学性能和破坏过程分析。一些典型参数的影响，例如冲击速度和角度，冲击器的形状和密度，并研究了有关人类颅骨细胞骨骼撞击行为的各种重建部分。总结了它们的冲击性能和能量吸收。当前的工作对于理解冲击载荷下人类颅骨细胞骨骼的机械奥秘将具有重要意义。