Nanogranular Origins of the Strength of Bone

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• 作者：Kuangshin Tai ; Franz-Josef Ulm ; Christine Ortiz
• 刊名：Nano Letters
• 出版年：2006
• 出版时间：November 2006
• 年：2006
• 卷：6
• 期：11
• 页码：2520 - 2525
• 全文大小：451K
• 年卷期：v.6,no.11(November 2006)
• ISSN：1530-6992

文摘

Here, we investigate the ultrastructural origins of the strength of bone, which is critical for proper physiological function. A combination ofdual nanoindentation, three-dimensional elastic-plastic finite element analysis using a Mohr-Coulomb cohesive-frictional strength criterion,and angle of repose measurements was employed. Our results suggest that nanogranular friction between mineral particles is responsible forincreased yield resistance in compression relative to tension and that cohesion originates from within the organic matrix itself, rather thanorganic-mineral bonding.