The initial, rapid, flow independent, apparent stress relaxation of articular cartilage disks deformed by unconfined compressive displacement is shown to be consistent with the theory of polymer dynamics. A relaxation function for polymers based upon a mechanistic model of molecular interaction (reptation) appropriately approximated early, flow independent relaxation of stress. It is argued that the theory of polymer dynamics, with its reliance on mechanistic models of molecular interaction, is an appropriate technique for application to and the understanding of rapid, flow independent, stress relaxation in cartilage.
Polymer Dynamics as a Mechanistic Model for the Flow-Independent Viscoelasticity of Cartilage
Contributed by the Bioengineering Division for publication in the JOURNAL OF BIOMECHANICAL ENGINEERING. Manuscript received by the Bioengineering Division February 5, 2002; revision received May 12, 2003. Associate Editor: Gerard Ateshian.
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Fyhrie, D. P., and Barone, J. R. (October 9, 2003). "Polymer Dynamics as a Mechanistic Model for the Flow-Independent Viscoelasticity of Cartilage ." ASME. J Biomech Eng. October 2003; 125(5): 578–584. https://doi.org/10.1115/1.1610019
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