The effect of damage on the viscoelastic behavior of human vertebral trabecular bone
The effect of damage on the viscoelastic behavior of human vertebral trabecular bone
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DOI：
10.1115/1.2205370
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发表时间：
2006-08-01
影响因子：
1.7
通讯作者：
Davy, Dwight T.
中科院分区：
文献类型：
--
作者：
Bredbenner, Todd L.;Davy, Dwight T.
本文研究了松质骨在低应变下的粘弹性行为以及损伤对这种粘弹性行为的影响，为应力松弛行为与累积损伤效应之间的相互作用提供了实验依据。结果表明，骨小梁标本的损伤至少是正交各向异性的。单轴加载简单的线性粘弹性模型描述的时间依赖性的应力-应变行为，在低应变试样损坏之前和之后，虽然更好地拟合这些模型之前获得的损坏。模拟所观察到的损伤累积的弛豫时间的变化似乎有必要成功地预测损伤后的粘弹性响应。
The present study examines the viscoelastic behavior of cancellous bone at low strains and the effects of damage on this viscoelastic behavior It provides experimental evidence of interaction between stress relaxation behavior and the effect of accumulated damage. The results suggest that damage is at least orthotropic in trabecular bone specimens under. uniaxial loading. Simple linear models of viscoelasticity described the time-dependent stress-strain behavior at low strains before and after specimen damage, although better fits of these models were obtained prior to damage. Modeling the observed changes in relaxation times with damage accumulation appears necessary to successfully predict the post-damage viscoelastic response.