On the torsional properties of single osteons.
On the torsional properties of single osteons.
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DOI：
10.1016/0021-9290(95)00057-o
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发表时间：
1995-11
影响因子：
2.4
通讯作者：
R. Lakes
中科院分区：
文献类型：
--
作者：
R. Lakes
前言Ascenzi等人观察到的骨单位的高效剪切模量。al.（1994）在先前在骨中观察到的尺寸效应的背景下进行解释。这些现象分析的背景下Cosserat弹性，也称为微极弹性。al.（1994）最近报道了在对各种纤维结构的湿的单个人股骨骨单位进行的骨力学测试中的高剪切模量。剪切模量，23 GPa的骨单位与纵向纤维，和17 GPa的骨单位与交替方向的lamellae，超过4倍以上的模量在文献中报道的宏观标本的骨组织。作者讨论了一些可能提高模量的人工过程，以及骨的结构特征。我们认为作者报道的模量是正确的，因为他们的station.It是本次交流的目的，阐明的原因，无论是在结构的观点和连续体的观点，骨单位和骨之间的模量的差异。
Preamble The high effective shear moduli of osteons as observed by Ascenzi et. al.(1994) is interpreted in the context of size effects previously observed in bone. These phenomena are analyzed in the context of Cosserat elasticity, also called micropolar elasticity.Ascenzi et. al.(1994) recently reported high shear moduli in bone mechanics tests upon wet single human femoral osteons of various fiber architectures. The shear moduli, 23 GPa for osteons with longitudinal fibers, and 17 GPa for osteons with lamellae of alternate orientation, were more than four times higher than moduli reported in the literature for macroscopic specimens of bone tissue. The authors discussed some artifactual processes which could have raised the moduli, as well as structural features of bone. We consider the authors' reported moduli to be correct as they stand. It is the purpose of this communication to elucidate the reasons, both in the structural view and in the continuum view, for the difference in moduli between osteons and bone.