A structural constitutive model for collagenous cardiovascular tissues incorporating the angular fiber distribution
A structural constitutive model for collagenous cardiovascular tissues incorporating the angular fiber distribution
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DOI：
10.1115/1.1894373
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发表时间：
2005-06-01
影响因子：
1.7
通讯作者：
Baaijens, FPT
中科院分区：
文献类型：
--
作者：
Driessen, NJB;Bouten, CVC;Baaijens, FPT
需要精确的本构模型来进一步了解心血管组织的力学行为。在本研究中，介绍了心血管组织的结构本构框架，该框架解释了胶原纤维的角分布。为了证明其能力，该模型被应用于研究动脉壁和主动脉瓣的双轴行为。动脉壁的压力-半径关系准确地描述了实验观察到的sigma形曲线。此外，该模型还可以分析主动脉瓣的非线性和各向异性力学特性。我们期望目前的模型为进一步研究心血管组织的复杂力学行为提供了强大的可能性，包括它们对机械刺激的反应。
Accurate constitutive models are required to gain further insight into the mechanical behavior of cardiovascular tissues. In this study, a structural constitutive framework for cardiovascular tissues is introduced that accounts for the angular distribution of collagen fibers. To demonstrate its capabilities, the model is applied to study the biaxial behavior of the arterial wall and the aortic valve. The pressure-radius relationships of the arterial wall accurately describe experimentally observed sigma-shaped curves. In addition, the nonlinear and anisotropic mechanical properties of the aortic valve can be analyzed with the proposed model. We expect that the current model offers strong possibilities to further investigate the complex mechanical behavior of cardiovascular tissues, including their response to mechanical stimuli.