Linear viscoelasticity - bone volume fraction relationships of bovine trabecular bone.
Linear viscoelasticity - bone volume fraction relationships of bovine trabecular bone.
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DOI：
10.1007/s10237-016-0787-0
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发表时间：
2016-12
影响因子：
3.5
通讯作者：
Pankaj, Pankaj
中科院分区：
文献类型：
--
作者：
Manda, Krishnagoud;Xie, Shuqiao;Wallace, Robert J.;Levrero-Florencio, Francesc;Pankaj, Pankaj
骨小梁以前被认为是时间依赖性（粘弹性）材料，但其粘弹性行为与骨体积分数（BV/TV）的关系迄今为止尚未得到研究。因此，本研究的目的是量化骨小梁随时间变化的粘弹性行为，并将其与 BV/TV 联系起来。在相当于 2000 生理应变水平的负载下，对圆柱形牛小梁骨样品 () 进行了单轴压缩蠕变实验。我们假设骨骼在这种低应变水平下以线性粘弹性方式表现，并通过将广义开尔文-沃伊特流变模型拟合到实验蠕变应变响应来估计相应的线性粘弹性参数。在时间相关的蠕变顺应函数和骨骼的 BV/TV 之间发现了强烈且显着的幂律关系 ()。这些基于 BV/TV 的材料属性可用于涉及骨小梁的有限元模型，以预测随时间变化的响应。为了方便用户，还使用数值互变方法将蠕变柔量函数转换为松弛函数，并且在时间相关松弛模量函数和 BV/TV 之间报告了类似的幂律关系。
Trabecular bone has been previously recognized as time-dependent (viscoelastic) material, but the relationships of its viscoelastic behaviour with bone volume fraction (BV/TV) have not been investigated so far. Therefore, the aim of the present study was to quantify the time-dependent viscoelastic behaviour of trabecular bone and relate it to BV/TV. Uniaxial compressive creep experiments were performed on cylindrical bovine trabecular bone samples () at loads corresponding to physiological strain level of 2000 . We assumed that the bone behaves in a linear viscoelastic manner at this low strain level and the corresponding linear viscoelastic parameters were estimated by fitting a generalized Kelvin–Voigt rheological model to the experimental creep strain response. Strong and significant power law relationships () were found between time-dependent creep compliance function and BV/TV of the bone. These BV/TV-based material properties can be used in finite element models involving trabecular bone to predict time-dependent response. For users’ convenience, the creep compliance functions were also converted to relaxation functions by using numerical interconversion methods and similar power law relationships were reported between time-dependent relaxation modulus function and BV/TV.
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影响因子：
3.7
作者：
Jenkins PJ;Ramaesh R;Pankaj P;Patton JT;Howie CR;Goffin JM;Merwe Av;Wallace RJ;Porter DE;Simpson AH
通讯作者：
Simpson AH
DOI：
10.1243/emed_jour_1986_015_039_02
发表时间：
1986-07-01
期刊：
Engineering in medicine
影响因子：
--
作者：
Currey, J D
通讯作者：
Currey, J D
影响因子：
2.8
作者：
Goffin, Jerome M.;Pankaj, Pankaj;Simpson, A. Hamish
通讯作者：
Simpson, A. Hamish
影响因子：
2.4
作者：
LAKES, RS;KATZ, JL;STERNSTEIN, SS
通讯作者：
STERNSTEIN, SS
影响因子：
2.8
作者：
LINDE, F;HVID, I;PONGSOIPETCH, B
通讯作者：
PONGSOIPETCH, B