Location-dependent behaviour and Johnson-Cook constitutive model parameters for bovine femoral bone.

Abstract

The bone's inhomogeneous structure instigates the varied mechanical properties from point to point, resulting in the constitutive model developed for a particular region failing when adopted for an arbitrary area. In the present study, bovine femoral bone diaphysis is partitioned into lower, mid, and upper diaphysis. The constitutive model was developed using the experimental data of uniaxial tensile test performed at various strain rates considering the locational variation of bone mineral density, which can be adapted for any arbitrary region of the femoral bone. The results showed that the predictive accuracy of the proposed model is within the acceptable range.