Poisson's ratio of bovine meniscus determined combining unconfined and confined compression

被引：18
作者：
Danso, E. K. [1 ,2 ]
Julkunen, P. [2 ,3 ]
Korhonen, R. K. [2 ]
机构：
[1] Colorado State Univ, Dept Mech Engn, Ft Collins, CO 80523 USA
[2] Univ Eastern Finland, Dept Appl Phys, POB 1627, FI-70211 Kuopio, Finland
[3] Kuopio Univ Hosp, Dept Clin Neurophysiol, POB 100, FI-70029 Kuopio, Finland
来源：
JOURNAL OF BIOMECHANICS | 2018年 / 77卷
基金：
芬兰科学院;
关键词：
Poisson's ratio; Meniscus; Stress relaxation; Confined; Unconfined; Aggregate modulus; Young's modulus; ARTICULAR-CARTILAGE; MECHANICAL-PROPERTIES; STRESS-RELAXATION; BEHAVIOR; COLLAGEN; TENSILE; STRAIN; TESTS;
D O I：
10.1016/j.jbiomech.2018.07.001
中图分类号：
Q6 [生物物理学];
学科分类号：
071011 ;
摘要：
Poisson's ratio has not been experimentally measured earlier for meniscus in compression. It is however an important intrinsic material property needed in biomechanical analysis and computational models. In this study, equilibrium Poisson's ratio of bovine meniscus (n = 6) was determined experimentally by combining stress-relaxation measurements in unconfined and confined compression geometries. The average Young's modulus, aggregate modulus and Poisson's ratio were 0.182 +/- 0.086 MPa, 0.252 +/- 0.089 MPa and 0316 +/- 0.040, respectively. These moduli are consistent with previously determined values, but the Poisson's ratio is higher than determined earlier for meniscus in compression through biomechanical modelling analysis. This new experimentally determined Poisson's ratio value could be used in the analysis of biomechanical data as well as in computational finite element analysis when the Poisson's ratio is needed as an input for the analysis. (C) 2018 Published by Elsevier Ltd.
引用
收藏
页码：233 / 237
页数：5
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