Bending and pressurisation test of the human aortic arch: experiments, modelling and simulation of a patient-specific case
Bending and pressurisation test of the human aortic arch: experiments, modelling and simulation of a patient-specific case
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DOI：
10.1080/10255842.2011.641123
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发表时间：
2013-08-01
影响因子：
1.6
通讯作者：
Cruchaga, Marcela A.
中科院分区：
文献类型：
--
作者：
Garcia-Herrera, Claudio M.;Celentano, Diego J.;Cruchaga, Marcela A.
这项工作提出了实验，建模和仿真，旨在描述的弯曲和加压测试过程中的人体主动脉弓的力学行为。主要的动机是描述材料的反应，这条动脉时，它受到大的准静态变形在三个不同的阶段：弯曲，轴向拉伸和内部加压。样本对应于没有心血管病变的年轻动脉。血压水平在正常和高血压生理范围内。这项工作的两个主要发现是，首先，通过拉伸试验测量，用于获得超弹性各向同性本构模型的材料参数进行材料表征，其次，这些材料参数的评估在模拟的弯曲和加压试验。总体而言，发现报告的材料表征提供了弯曲和加压试验中考虑的严重复杂载荷条件下主动脉弓力学行为的真实描述。
This work presents experiments, modelling and simulation aimed at describing the mechanical behaviour of the human aortic arch during the bending and pressurisation test. The main motivation is to describe the material response of this artery when it is subjected to large quasi-static deformations in three different stages: bending, axial stretching and internal pressurisation. The sample corresponds to a young artery without cardiovascular pathologies. The pressure levels are within the normal and hypertension physiological ranges. The two principal findings of this work are firstly, the material characterisation performed via tensile test measurements that serve to derive the material parameters of a hyperelastic isotropic constitutive model and, secondly, the assessment of these material parameters in the simulation of the bending and pressurisation test. Overall, the reported material characterisation was found to provide a realistic description of the mechanical behaviour of the aortic arch under severe complex loading conditions considered in the bending and pressurisation test.