Simulation of the Mechanical Behaviour of a Single Human Trabecula assessed with a Micromechanical Test and Nanoindentation
Result description
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 ofthe 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.
Keywords
trabecular bonenanoindentationmicromechanical testingoptical strain measurementconstitutive modelsFEM
The result's identifiers
Result code in IS VaVaI
Alternative codes found
RIV/68378297:_____/11:00364803 RIV/68407700:21260/11:00182836
Result on the web
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DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Simulation of the Mechanical Behaviour of a Single Human Trabecula assessed with a Micromechanical Test and Nanoindentation
Original language description
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 ofthe 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.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
FI - Traumatology and orthopaedics
OECD FORD branch
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Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)
S - Specificky vyzkum na vysokych skolach
Others
Publication year
2011
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
Proceedings of the Thirteenth International Conference on Civil, Structural and Environmental Engineering Computiing
ISBN
978-1-905088-46-1
ISSN
1759-3433
e-ISSN
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Number of pages
12
Pages from-to
1-12
Publisher name
Civil-Comp Press
Place of publication
Edinburgh
Event location
Chania
Event date
Sep 6, 2011
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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Result type
D - Article in proceedings
CEP
FI - Traumatology and orthopaedics
Year of implementation
2011