Experimental study and constitutive modelling of the passive mechanical properties of the ovine infrarenal vena cava tissue

被引：53

作者：

Alastrue, V. ^{[1
]}

Pena, E. ^{[1
]}

Martinez, M. A. ^{[1
]}

Doblare, M. ^{[1
]}

机构：

[1] Univ Zaragoza, Aragon Inst Engn Res I3A, Grp Struct Mech & Mat Modelling, E-50018 Zaragoza, Spain

来源：

JOURNAL OF BIOMECHANICS | 2008年 / 41卷 / 14期

关键词：

Elasticity; Constitutive modelling; Data fitting; Stress-stretch relation;

D O I：

10.1016/j.jbiomech.2008.07.008

中图分类号：

Q6 [生物物理学];

学科分类号：

071011 ;

摘要：

The passive mechanical properties of the ovine infrarenal vena cava are analysed in this paper. In vivo stretch from 15 venae was measured in order to get data from the physiological situation before harvesting the vessel. Vena cava strips (n = 64) both in longitudinal and circumferential directions were cut and subjected to simple tension tests. Results showed the strongly marked anisotropic character of the caval tissue. The maximal stretch ranges reached in both directions were very different, with the longitudinal range being much higher than the circumferential range in all cases. Three anisotropic constitutive models were used to fit the data obtained from the experiments. Advantages and drawbacks of each of these models are also discussed. (c) 2008 Elsevier Ltd. All rights reserved.

引用

页码：3038 / 3045

页数：8

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