Direct measurement of the Poisson's ratio of human patella cartilage in tension
Direct measurement of the Poisson's ratio of human patella cartilage in tension
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DOI：
10.1115/1.1449905
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发表时间：
2002-04-01
影响因子：
1.7
通讯作者：
Setton, LA
中科院分区：
文献类型：
--
作者：
Elliott, DM;Narmoneva, DA;Setton, LA
关节软骨已被证明表现出大的横向收缩时，负载在张力，这表明存在大值的泊松比。以前的研究表明，这种效果是依赖于所施加的应变的幅度，所以一个单一的泊松比可能不足以描述软骨的行为在这项研究中，泊松比（v），趾区模量（E-0），和线性区模量（E）的人髌骨关节软骨在简单的拉伸试验从光学分析的二维应变场在平衡。泊松比被认为是独立的应变，由于在测试过程中没有粘弹性效应。泊松比在表面区域明显较高（1.87+/-1.11，p
Articular cartilage has been shown to exhibit large transverse contractions when loaded in tension, suggesting the existence of large values for the Poisson's ratio. Previous studies have suggested that this effect is dependent on amplitude of applied strain, so that a single Poisson's ratio mail not be sufficient to describe cartilage behavior In this study, the Poisson ratio (v), toe region modulus (E-0), and linear region modulus (E) of human patellar articular cartilage were calculated in simple tension tests from optical analysis of the two-dimensional strain fields at equilibrium. The Poisson's ratio was found to be independent of strain due to the absence of viscoelastic effects during testing. The Poisson's ratio was found to be significantly higher in the surface zone (1.87+/-1.11, p