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松质骨弹性模量与表观密度的关系──基于杆-杆结构和带孔板结构相结合的模型
Investigation in the Dependency of Stiffness of Cancellous Bone on Apparent Density—Based on the Combination Model of Rod-Rod Structure and Perforated Plate Structure
【摘要】 从杆-杆结构模型开始,然后以此框架为基础逐渐填加固体物质形成带孔板的框架模型,从而将松质骨的两种微结构模型结合起来,利用均匀化理论计算松质骨的弹性模量,通过对所得结果的分析,讨论了松质骨的弹性模量与表观密度的关系。得出弹性模量与表观密度的关系为E=1.781ρ.88(GPa),该结果与用胞元结构理论导出的关系式比较接近,可能更合理。
【Abstract】 The structure of cancellous bone is cellular.There are two basic models of cancellous bone structure namely the model of rod-rod structure and the model of framework of perforated plate.This paper presents several models of structure developed from the model of rod-rod structure to the model of framework of perforated plate.We computed the elastic modulus of cancellous bone based on these modes using homogenization.The relationship between the elastic modulus(E) of cancellous bone and the apparent density(ρ) was determined to be E=1.78ρ1.88.
【Key words】 Cancellous bone Elastic modulus Apparent density Microstructure Homogenization;
- 【文献出处】 生物医学工程学杂志 ,Journal of Biomedical Engineering , 编辑部邮箱 ,2006年01期
- 【分类号】R318.01
- 【被引频次】11
- 【下载频次】222