We investigated if failure behavior of trabecular bone at the apparent level as measured in compression tests can be predicted from tissue loading conditions and a tissue yield criterion. Micro- finite element models of 5 bone specimens were made using a micro-CT scanner. The failure behavior of these specimens was measured in compression tests and simulated with non-linear micro- finite element analyses assuming elastic-perfectly plastic tissue yield behavior. It was found that the ultimate stress could be predicted within 15% of the measured values, the ultimate strain, however was underestimated by 35%-49%. Although a more realistic description of tissue yield behavior is likely necessary to improve agreement, it is concluded that the approach introduced here is feasible.
|Journal||Journal of Computer Simulation and Modelling in Medicine|
|Publication status||Published - 2000|