Biaxial mechanical properties of the native and glutaraldehyde-treated aortic valve cusp: Part II - A structural constitutive model
Biaxial mechanical properties of the native and glutaraldehyde-treated aortic valve cusp: Part II - A structural constitutive model
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DOI：
10.1115/1.1287158
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发表时间：
2000-08-01
影响因子：
1.7
通讯作者：
Sacks, MS
中科院分区：
文献类型：
--
作者：
Billiar, KL;Sacks, MS
我们已经制定了第一个本构模型来描述完整的测量平面双轴应力-应变关系的原生和戊二醛处理主动脉瓣尖使用结构导向的方法。当应用于原生、零压固定和低压固定尖头时，只需要三个参数就可以充分模拟高度各向异性和非线性的平面内双轴力学行为。发现原生、零压力和低压固定尖头的行为差异主要是由于有效纤维应力-应变行为的变化。此外，该模型能够解释小(
We have formulated the first constitutive model to describe the complete measured planar biaxial stress-strain relationship of the native and glutaraldehyde-treated aortic valve cusp using a structurally guided approach. When applied to native, zero-pressure fixed, and low-pressure fixed cusps, only three parameters were needed to simulate fully the highly anisotropic, and nonlinear in-plane biaxial mechanical behavior. Differences in the behavior of the native and zero- and low-pressure fixed cusps were found to be primarily due to changes in the effective fiber stress-strain behavior Further, the model was able to account for the effects of small (