骨骼中的微裂缝行为:骨水泥线尖端的应力场分析

IF 1.7 4区 医学 Q3 ENGINEERING, BIOMEDICAL
Chunhui Ji, Xiuyan Yang, Liang Zhang, Xicheng Chen, Yadi Sun, Bin Lin
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引用次数: 0

摘要

骨的微观结构决定了微裂缝扩展的复杂性。目前的研究依赖于线性弹性断裂力学,对影响裂缝应力强度的真实多层次结构(如骨水泥线和骨隆)考虑不足。本研究通过构建包含单个或多个骨架的模型,深入研究了裂缝长度、骨架半径和模量比等因素对裂缝顶端应力强度因子的影响。该研究采用断裂力学相场方法模拟裂纹扩展路径,尤其探讨了作为裂纹扩展弱界面的骨水泥线的作用。目的是全面系统地阐明骨微结构在裂纹扩展中的关键因素。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Microcrack behavior in bone: Stress field analysis at osteon cement line tips.

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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来源期刊
CiteScore
3.60
自引率
5.60%
发文量
122
审稿时长
6 months
期刊介绍: The Journal of Engineering in Medicine is an interdisciplinary journal encompassing all aspects of engineering in medicine. The Journal is a vital tool for maintaining an understanding of the newest techniques and research in medical engineering.
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