A coupled contact model of cartilage lubrication in the mixed-mode regime under static compression
JJ Liao, DW Smith, S Miramini, BS Gardiner, L Zhang
Tribology International | Elsevier | Published : 2020
This study presents a coupled cartilage contact model, in which the contact gap and cartilage tissue are modelled as two poroelastic systems, linked by pressure and normal flux continuity boundary conditions. Using a tibial plug under indentation as a proof-of-concept model, the predictions support the weeping lubrication theory under static compression. Specifically, the interstitial fluid would exude from the underlying cartilage into the contact gap to extend the mixed-mode duration by > 20-fold compared to a no fluid exudation counterpart. Moreover, the traditional contact model, that does not consider the contact gap and cartilage fluid exchange, potentially overestimates the interstiti..View full abstract
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Awarded by Australian Research Council
This work was supported by the Australian Research Council (DP180100915) and a Graduate Research Scholarship by The University of Melbourne.