骨单位
材料科学
强度因子
断裂力学
背景(考古学)
模数
弹性模量
压力(语言学)
微观结构
半径
水泥
复合材料
机械
结构工程
皮质骨
地质学
工程类
计算机科学
物理
解剖
医学
语言学
哲学
古生物学
计算机安全
作者
Chunhui Ji,Xiuyan Yang,Liang Zhang,Xicheng Chen,Yadi Sun,Bin Lin
标识
DOI:10.1177/09544119241272854
摘要
Bone microstructure governs microcrack propagation complexity. Current research, relying on linear elastic fracture mechanics, inadequately considers authentic multi-level structures, like cement lines and osteons, impacting stress intensity at cracks. This study, by constructing models encompassing single or multiple osteons, delves into the influence of factors like crack length, osteon radius, and modulus ratio on the stress intensity factor at the crack tip. Employing a fracture mechanics phase-field approach to simulate crack propagation paths, it particularly explores the role of cement lines as weak interfaces in crack extension. The aim is to comprehensively and systematically elucidate the critical factors of bone microstructure in the context of crack propagation.
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