Experimental characterization of post rigor mortis human muscle subjected to small tensile strains and application of a simple hyper-viscoelastic model
Experimental characterization of post rigor mortis human muscle subjected to small tensile strains and application of a simple hyper-viscoelastic model
复制标题
受小拉伸应变作用的死后人体肌肉的实验表征以及简单超粘弹性模型的应用
DOI：
10.1177/0954411914555422
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发表时间：
2014
期刊：
影响因子：
--
通讯作者：
D. Mitton
中科院分区：
文献类型：
--
作者：
L. Gras;S. Laporte;P. Viot;D. Mitton
在为冲击生物力学开发的模型中，肌肉通常用具有主动和被动特性的一维元素表示。肌肉的被动特性通常是从动物肌肉上进行的实验中获得的，因为人类肌肉的数据有限。因此，本研究的目的是描述人体肌肉在紧张状态下的被动反应。在不同应变率（0.0045，0.045和0.45 s-1）下对10块尺侧腕伸肌进行拉伸试验。提出了一种考虑基本几何特征的非线性单元与一个或两个麦克斯韦单元并联的模型。实验结果被用来识别模型的参数。一阶和二阶模型的结果相似。对于一阶模型，指数律的平均参数如下：杨氏模量E（6.8 MPa）和曲率参数α（31.6）。麦克斯韦元素平均值如下：粘度参数η（1.2 MPa s）和弛豫时间τ（0.25 s）。我们的研究结果提供了新的数据，在体外测试的人体肌肉和一个简单的模型与基本的几何特征，代表其在三种不同的应变率下的拉伸行为。这种方法可以用来评估其他人类肌肉的行为。
In models developed for impact biomechanics, muscles are usually represented with one-dimensional elements having active and passive properties. The passive properties of muscles are most often obtained from experiments performed on animal muscles, because limited data on human muscle are available. The aim of this study is thus to characterize the passive response of a human muscle in tension. Tensile tests at different strain rates (0.0045, 0.045, and 0.45 s−1) were performed on 10 extensor carpi ulnaris muscles. A model composed of a nonlinear element defined with an exponential law in parallel with one or two Maxwell elements and considering basic geometrical features was proposed. The experimental results were used to identify the parameters of the model. The results for the first- and second-order model were similar. For the first-order model, the mean parameters of the exponential law are as follows: Young’s modulus E (6.8 MPa) and curvature parameter α (31.6). The Maxwell element mean values are as follows: viscosity parameter η (1.2 MPa s) and relaxation time τ (0.25 s). Our results provide new data on a human muscle tested in vitro and a simple model with basic geometrical features that represent its behavior in tension under three different strain rates. This approach could be used to assess the behavior of other human muscles.
影响因子：
2.4
作者：
Davis, J;Kaufman, KR;Lieber, RL
通讯作者：
Lieber, RL