Investigation of role of cartilage surface polymer brush border in lubrication of biological joints
JinJing Liao, David W Smith, Saeed Miramini, Bruce S Gardiner, Lihai Zhang
Friction | Springer Science and Business Media LLC | Published : 2021
Although experimental evidence has suggested that the polymer brush border (PBB) on the cartilage surface is important in regulating fluid permeability in the contact gap, the current theoretical understanding of joint lubrication is still limited. To address this research gap, a multiscale cartilage contact model that includes PBB, in particular its effect on the fluid permeability of the contact gap, is developed in this study. Microscale modeling is employed to estimate the permeability of the contact gap. This permeability is classified into two categories: For a gap size > 1 µm, the flow resistance is assumed to be dominated by the cartilage roughness; for gap size < 1 µm, flow resistan..View full abstract
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Awarded by Australian Research Council
This study was supported by the Australian Research Council (DP180100915) and the Graduate Research Scholarship by the University of Melbourne.