Indirect determination of material model parameters for single trabecula based on nanoindentation and three point bending test

0394582 - ÚTAM 2014 RIV CZ eng J - Journal Article
Zlámal, P. - Jiroušek, Ondřej - Kytýř, Daniel - Doktor, Tomáš
Indirect determination of material model parameters for single trabecula based on nanoindentation and three point bending test.
Acta Technica CSAV. Roč. 58, č. 2 (2013), s. 157-171. ISSN 0001-7043
R&D Projects: GA ČR(CZ) GAP105/10/2305
Institutional support: RVO:68378297
Keywords : elasto-visco-plastic-damage model * FEM * nanoindentation * trabecular bone
Subject RIV: FI - Traumatology, Orthopedics
http://journal.it.cas.cz/index.php?stranka=contents

The aim of the paper is to develop a procedure for determination of elasto-visco-plastic constitutive model with damage for human single trabecula. The procedure is suited for indirect establishing of material model based on nanoindentation and three-point bending test. Constants of the material model are identified by Finite Element (FE) simulations and curve fitting using an algorithm based on least squares fitting of the experimental curves. In the case of nanoindentation, the penetration depth of tip during the FE analyses (FEA) is fitted to experimental nanoindentation curves. In the case of three-point bending, displacements of nodes are compared with displacements of markers observed during the experiment using digital image correlation.
Permanent Link: http://hdl.handle.net/11104/0223117