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Compressibility of arterial wall - Direct measurement and predictions of compressible constitutive models.
Journal of the Mechanical Behavior of Biomedical Materials ( IF 3.9 ) Pub Date : 2018-11-05 , DOI: 10.1016/j.jmbbm.2018.11.004
Pavel Skacel 1 , Jiri Bursa 1
Affiliation  

Volumetric compressibility and Poisson's ratios of fibrous soft tissues are analyzed in this paper on the basis of constitutive models and experimental data. The paper extends the previous work of Skacel and Bursa (J Mech Behav Biomed Mater, 54, pp. 316–327, 2016), dealing with incompressible behaviour of constitutive models, to the area of compressibility. Both recent approaches to structure-based constitutive modelling of anisotropic fibrous biomaterials (based on either generalized structure tensor or angular integration) are analyzed, including their compressibility-related aspects. New experimental data related to compressibility of porcine arterial layer are presented and compared with the theoretical predictions of analyzed constitutive models. The paper points out the drawbacks of recent models with distributed fibres orientation since none of the analyzed constitutive models seems to be capable to predict the experimentally observed Poisson's ratios and volume change satisfactory.



中文翻译:

动脉壁的可压缩性-可压缩本构模型的直接测量和预测。

本文基于本构模型和实验数据,对纤维软组织的体积压缩率和泊松比进行了分析。该论文将Skacel和Bursa的先前工作(J Mech Behav Biomed Mater,54,第316-327页,2016)扩展到了可压缩性领域。分析了各向异性纤维生物材料基于结构的本构模型的两种最新方法(基于广义结构张量或角积分),包括与可压缩性有关的方面。提出了与猪动脉层可压缩性有关的新实验数据,并将其与所分析的本构模型的理论预测进行了比较。

更新日期:2018-11-05
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