JOURNAL OF SHANDONG UNIVERSITY(NATURAL SCIENCE) ›› 2015, Vol. 50 ›› Issue (01): 85-89.doi: 10.6040/j.issn.1671-9352.0.2014.295

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Simulating the solute diffusion in articular cartilage under compression loading

JIANG Jun1,2, YANG Xiu-ping1,2, LIU Qing2, ZHANG Chun-qiu2   

  1. 1. Tianjin Key Laboratory of the Design and Intelligent Control of the Advanced Mechatronical Systems, Tianjin 300384, China;
    2. School of Mechanical Engineering, Tianjin University of Technology, Tianjin 300384, China
  • Received:2014-06-26 Revised:2014-11-13 Online:2015-01-20 Published:2015-01-24

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Abstract: In order to study the process and law of solute diffusion in articular cartilage under compression loading, triphasic constitutive relation was converted into a biphasic equation and the finite element method of heat transfer was applied to simulate the solute diffusion under compression loading. The effects of dynamic compression amplitude and frequency on solute diffusion were analyzed. Solute concentration distribution and curves with time and locations in cartilage were obtained. The results show that solute diffusion is easier under static compression than that of dynamic compression with the same compression amplitude. Dynamic compression amplitude increase restrains solute diffusion; frequency increase is good for solute diffusion at the different layers inside the cartilage.

Key words: diffusion, compression loading, articular cartilage, solute, finite element method

CLC Number: 

  • R318.01
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