A preliminary investigation of the dynamic viscoelastic relaxation of bovine cortical bone
1 Blast Impact and Survivability Research Unit, University of Cape Town, Private Bag X3, Rondebosch 7701, South Africa
2 Centre for Computational and Applied Mechanics, University of Cape Town, Private Bag X3, Rondebosch 7701, South Africa
3 Department of Mechanical Engineering, University of Cape Town, Private Bag X3, Rondebosch 7701, South Africa
Published online: 7 September 2015
A new experimental approach is proposed to characterize the dynamic viscoelastic relaxation behaviour of cortical bone. Theoretical models are presented to show that a linear viscoelastic material, when allowed to relax between two long elastic bars, will produce stress, strain and strain rate histories that contain characteristic features. Furthermore, typical experimental results are presented to show that these characteristic features are observed during split Hopkinson bar tests on bovine cortical bone using a Cone-in-Tube striker. The interpretation of this behaviour in the context of a standard linear viscoelastic model is discussed.
© Owned by the authors, published by EDP Sciences, 2015
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