Mechanical Characteristics of the Human Skull Bone

R. Delille, C. Delille, P. Drazetic, C. Masson, and E. Markiewicz (France)


skull bone / mechanical properties / identification / bending test / finite elements.


In the first batch of works, experimental tests are performed on post mortem human subjects. Ninety-two tests human skull bones specimens are tested. Skull bones material characteristics are identified by numerical simulations. Three classes are determined for the bone’s Young modulus compared to calcination bone percentage. In the second part, a quasi-static compression test is carried out on the skull. Skull material characteristics are deduced according to percentage of bone. The behaviour law for the cranium was established on the basis of its percentage bone. Numerical simulation of this cranium has validated the class and the identified behaviour laws. The results show that elastic-plastic mechanical characteristics must be used for the skull. These results will serve in the definition of a resin material. A physical skull model will be created with this resin using stereolithography. This physical prototype will replace the head of the current models.

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