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Large deformation shear properties of liver tissue
1School of Aerospace, Mechanical and Mechatronic Engineering, Building J07, University of Sydney, NSW 2006, Australia.
Biorheology
|November 28, 2002
Abstract:
Characterization of the mechanical properties of soft biological tissues is important for establishing the mechanical tolerances of the tissues, and for input to computational models. In this work, the viscoelastic properties of bovine liver tissue in shear loading have been measured using relaxation and constant shear rate loading. The tissue is nonlinearly viscoelastic for strains greater than 0.2%, has a yield strain of approximately 10, and shows moderate strain-rate sensitivity. The response can be modelled using a nonlinear viscoelastic differential model previously developed for brain tissue.