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摘要:
It is commonly known that cortical bone exhibits viscoelastic-viscoplastic behavior which affects the biomechanical response when an implant is subjected to an external load. In addition, long term effects such as creep, relaxation and remodeling affect the success of the implant over time. Constitutive material models are commonly derived from data obtained in in vitro experiments. However during function, remodeling of bone greatly affects the bone material over time. Hence it is essential to include long term in vivo effects in a constitutive model of bone. This paper proposes a constitutive material model for cortical bone incorporating viscoelasticity, viscoplasticity, creep and remodeling to predict stress-strain at various strain rates as well as the behavior of bone over time in vivo. The rheological model and its parameters explain the behavior of bone subjected to longitudinal loading. By a proper set of model parameters, for a specific cortical bone, the present model can be used for prediction of the behavior of this bone under specific loading conditions. In addition simulation with the proposed model demonstrates excellent agreement to in vitro and in vivo experimental results in the literature.
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篇名 On a Constitutive Material Model to Capture Time Dependent Behavior of Cortical Bone
来源期刊 力学国际期刊(英文) 学科 医学
关键词 CORTICAL bone Viscoelastic-Viscoplastic Creep REMODELING CONSTITUTIVE Model
年,卷(期) 2014,(11) 所属期刊栏目
研究方向 页码范围 348-361
页数 14页 分类号 R73
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研究主题发展历程
节点文献
CORTICAL
bone
Viscoelastic-Viscoplastic
Creep
REMODELING
CONSTITUTIVE
Model
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研究去脉
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期刊影响力
力学国际期刊(英文)
月刊
2160-049X
武汉市江夏区汤逊湖北路38号光谷总部空间
出版文献量(篇)
280
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0
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0
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