The Micro-Mechanical Behavior of Articular Cartilage under Continuous Sliding Load
The Micro-Mechanical Behavior of Articular Cartilage under Continuous Sliding Load
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DOI：
10.4028/www.scientific.net/amm.395-396.654
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发表时间：
2013-09
期刊：
影响因子：
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通讯作者：
P. Xiao;Li-Lan Gao;Z. Liu;Chunqiu Zhang
中科院分区：
文献类型：
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作者：
P. Xiao;Li-Lan Gao;Z. Liu;Chunqiu Zhang
关节软骨作为一种粘弹性、非线性的结缔组织，在日常活动中承受着持续的滑动载荷。应用优化的数字图像相关技术（DIC），研究了滑动载荷下滑动速率和压缩应变对猪关节软骨各层法向位移的影响。在一定的滑动速率和压应变下，随着滑动的进行，软骨各层的法向位移逐渐增大。实验结果表明，表层法向位移最大，深层法向位移最小，中层法向位移介于表层和深层之间;软骨各层法向位移随压缩应变的增大而增大，随滑动速率的增大而减小。在连续滑动荷载作用下，不同层位的法向位移不同。
As a viscoelastic and nonlinear connective tissue, articular cartilage bears continuous sliding load in the daily activities. The optimized digital image correlation (DIC) technique was applied to investigate the effect of sliding rate and compressive strain on the normal displacement of different layers in pig articular cartilage under sliding load. The normal displacements of different layers in cartilage increase gradually with sliding going on with given sliding rate and compressive strain. Experiments showed that the normal displacement of superficial layer is the largest, the normal displacement of deep layer is the smallest and the normal displacement of middle layer is between superficial layer and deep layer, and found that the normal displacements of different layers in cartilage increase with increasing compressive strains, but decrease with increasing sliding rates. The normal displacement of different layers are different under continuous sliding load.