Journal
MECHANICS RESEARCH COMMUNICATIONS
Volume 37, Issue 2, Pages 246-255Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.mechrescom.2009.12.003
Keywords
Human knee; Synovial fluid; HA; PRG4; Micromorphic fluid; Genetic algorithm
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Funding
- National University Research Council CNCSIS, Romania [106/2007, 247/2007]
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In this paper, an alternative model for the synovial fluid in the human knee is proposed. The synovial fluid is modeled as a micromorphic fluid containing deformable material particles with 12 degrees of freedom, namely three translations, three rotations and six stretches and shears. Two micromorphic viscosity coefficients are introduced as functions of hyaluronan and PRG4/lubricin concentrations and are reconstructed by a genetic algorithm based on experimental data. The model is validated by applying it to well established rheological measurements of synovial fluid, such as shear-thinning (Cooke et al., 1978). (C) 2009 Elsevier Ltd. All rights reserved.
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