Journal
JOURNAL OF THE MECHANICAL BEHAVIOR OF BIOMEDICAL MATERIALS
Volume 81, Issue -, Pages 106-119Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jmbbm.2018.02.018
Keywords
Cellular structure; Skull bone; Energy absorption; Failure mechanism; Impact
Funding
- Program for Interdisciplinary Basic Research of Science-Engineering-Medicine and Outstanding Young Scholars in Harbin Institute of Technology
- Alexander von Humboldt Foundation [1155520]
- Program for Outstanding Young Scholars in Harbin Institute of Technology
- Science and Technology on Advanced Composites in Special Environment Laboratory
- Young Elite Scientist Sponsorship Program by CAST [YESS20160190]
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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. Microstructures, 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.
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