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Simulation of the Mechanical Behaviour of a Single Human Trabecula assessed with a Micromechanical Test and Nanoindentation
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SYSNO ASEP 0364803 Document Type C - Proceedings Paper (int. conf.) R&D Document Type Conference Paper Title Simulation of the Mechanical Behaviour of a Single Human Trabecula assessed with a Micromechanical Test and Nanoindentation Author(s) Jiroušek, Ondřej (UTAM-F) RID, SAI
Kytýř, Daniel (UTAM-F) SAI, RID, ORCID
Kunecký, Jiří (UTAM-F) RID, SAI, ORCID
Zlámal, Petr (UTAM-F) RID, SAI, ORCID
Doktor, Tomáš (UTAM-F) RID, SAI, ORCID
Němeček, J. (CZ)Number of authors 6 Source Title Proceedings of the Thirteenth International Conference on Civil, Structural and Environmental Engineering Computing. - Kippen : Civil-Comp Press, 2011 / B.H.V. Topping ; Y. Tsompanakis - ISSN 1759-3433 - ISBN 978-1-905088-46-1 Pages s. 238-249 Number of pages 12 s. Publication form cd-rom - cd-rom Action International Conference on Civil, Structural and Environmental Engineering Computing /13./ Event date 06.09.2011-09.09.2011 VEvent location Chania Country GR - Greece Event type WRD Language eng - English Country GB - United Kingdom Keywords trabecular bone ; nanoindentation ; micromechanical testing ; optical strain measurement ; constitutive models ; finite element modelling Subject RIV JJ - Other Materials R&D Projects GAP105/10/2305 GA ČR - Czech Science Foundation (CSF) CEZ AV0Z20710524 - UTAM-F (2005-2011) Annotation The paper presents a comparison between mechanical properties of single human trabeculae obtained by micromechanical testing and those assessed by nanoindentation. Compact uniaxial tension/compression device has been developed for this purpose. The strains at the surface of the sample are measured optically using a high-resolution CCD camera. The strain field is evaluated using image correlation technique. Local micromechanical properties were assessed using nanoindentation. From obtained nanoindentation curves material parameters for elasto--plastic constitutive model with isotropic hardening are identified in a FE simulation of the indentation process. The unknown parameters are identified in a large set of parametric studies in which the response of the model is best-fitted to the experimental curve. Validation of the material model obtained from nanoindentation is presented in simulation of the tensile test of single trabecula. Workplace Institute of Theoretical and Applied Mechanics Contact Kulawiecová Kateřina, kulawiecova@itam.cas.cz, Tel.: 225 443 285 Year of Publishing 2012
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