考虑粘弹性性能的密质骨损伤本构模型的研究
密质骨|骨单位(哈佛氏系统)|粘弹性|损伤本构模型,关键词:
关键词:密质骨;骨单位(哈佛氏系统);粘弹性;损伤本构模型
本研究考虑密质骨的粘弹性性能,在连续损伤力学的框架范围内研究了密质骨的本构模型,分别就细观结构强度服从均匀分布和非均匀分布两种情况进行了讨论。实验研究表明,该损伤模型是可取的。
分类号: R318.01
A STUDY ONVISCOELASTIC DAMAGE MODEL OF COMPACT BONE
Zhang RuipingWu Wenzhou
(Xian petroleum Institute, Xian 710065)(Taiyuan University oftechnology, Taiyuan 030024)
ABSTRACT: A damage model of compactbone with Haversian structure is proposed in this paper. The model is developed within thegeneral framework of the CDM (continuum damage mechanics) through consideration of theirreversible changes of the mesostructure and the viscoelastic properties of bone. Thecorrectness of this model is verified through the tensile tests of human wet compact bonespecimens and the observations of the fracture surfaces of the specimens by scanningelectron microscope.
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