DEVELOPMENT OF VISCO-ELASTO-PLASTIC MATERIAL MODEL FOR HUMAN TRABECULAR BONE USING NANOINDENTATION

Petr Zlámal, Ondřej Jiroušek, Daniel Kytýř, Jiří Němeček

Abstract

Knowledge of trabecular bone behaviour under loading is very important for bone quality assessment. For numerical modelling of deformation behaviour of trabecular tissue it is necessary to establish a material model for single trabeculae. For visco-elasto-plastic material model used in this study have to determine eight material constants. Two elastic constants were obtained directly from nanoindentation test by Oliver-Pharr method. Remaining material constants were identified from a Finite Element (FE) simulation of nanoindentation test.

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DOI

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IMEKO TC

TC15 - Experimental Mechanics

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