PLAUSIBILITY OF STRUCTURAL CONSTITUTIVE-EQUATIONS FOR ISOTROPIC SOFT-TISSUES IN FINITE STATIC DEFORMATIONS
PLAUSIBILITY OF STRUCTURAL CONSTITUTIVE-EQUATIONS FOR ISOTROPIC SOFT-TISSUES IN FINITE STATIC DEFORMATIONS
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DOI：
10.1115/1.2901516
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发表时间：
1994-09-01
影响因子：
2.6
通讯作者：
LANIR, Y
中科院分区：
文献类型：
--
作者：
LANIR, Y
软组织是包埋在流体基质中的纤维的二元系统。它们对外部载荷的平衡响应是纤维应力和基质渗透压的总和。本研究探讨的条件下，各向同性组织的弹性响应，结构本构方程建模，是物理上合理的。分析表明，如果纤维的拉伸力随拉伸单调增加，如果基质渗透压随浓度凸形增加，则可确保可渗透性。已发表的数据表明，这两种情况在软组织中普遍存在。因此得出结论，结构建模与物理上合理的反应是相容的。
Soft tissues are binary systems of fibers embedded in a fluid matrix. Their equilibrium response to external loading is the sum of the fibers' stress and the matrix osmotic pressure. The present study examines the conditions under which the elastic response of isotropic tissues, as modeled by structural constitutive equations, is physically plausible. The analysis skews that plausibility is ensured if the fibers' stretch force increases monotonically with the stretch and if the matrix osmotic pressure increases convexly with the concentration. Published data shows that both conditions prevail in soft tissues. If is thus concluded that structural modeling is compatible with physically plausible response.