Abstract
Using fresh human femurs, compression test under uniaxial and triaxial stress states and tension test were performed. Then the physical properties of bone which involves some porosity werc studied. It was observed that the initial yield point and peak strength under triaxial conditions were significantly higher than those under uniaxial conditions, and these values decreased for tension tests. On the basis of these experimental results, the failure envelopes for initial yield point and peak strength under side pressure were determined. The Drucker-Prager's failure criterion wasfound suitable to describe the bone failure behavior.
