Structural Arrangement Effects of Mineral Platelets on the Nature of Stress Distribution in Bio-Composites
Structural Arrangement Effects of Mineral Platelets on the Nature of Stress Distribution in Bio-Composites
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DOI：
10.3970/cmes.2007.018.145
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发表时间：
2007-03
影响因子：
2.4
通讯作者：
S. Anup;S. Sivakumar;G. K. Suraishkumar
中科院分区：
文献类型：
--
作者：
S. Anup;S. Sivakumar;G. K. Suraishkumar
骨是一种层次化的生物复合材料，在精细的超微结构水平上，具有交错排列的软蛋白质分子和硬矿物小片。研究生物复合材料(如骨)高断裂韧性的原因需要考虑不同层次的特性。在这项工作中，分析是在连续体水平上进行的，但所使用的性质与所考虑的水平是适当的。这样，在破损的血小板附近的血小板的应力分布分析中考虑了骨的精细超微结构水平上的性质。结果表明，重叠对确定应力分布的性质有一定的影响。这可能对生物复合材料的断裂韧性起到重要作用。关键词：骨，生物复合材料，断裂韧性，重叠，剪切滞后
Bone is a hierarchical bio-composite, and has a staggered arrangement of soft protein molecules interspaced with hard mineral platelets at the fine ultrastructure level. The investigation into reasons for high fracture toughness of biocomposites such as bone requires consideration of properties at the different levels of hierarchy. In this work, the analysis is done at the continuum level, but the properties used are appropriate to that of the level considered. In this way, the properties at the fine ultrastructure level of bone is considered in the stress distribution analysis of a platelet adjacent to the broken platelet. Results show the influence of overlapping in determining the nature of stress distribution. This could play an important part in the fracture toughness of biocomposites. Keyword: Bone, Bio-composites, Fracture toughness, Overlapping, Shear lag