Development of Visco-elasto-plastic Material Model for Human Trabecular Bone using Nanoindentation
Result description
Knowledge of trabecular bone behaviour under loading is very important for the bone quality assessment. For investigation of deformation behaviour of trabecular bone a combination of computational and experimental method was used. In this study suitablevisco-elasto/plastic material model for single trabeculae was established from numerical simulation of nanoindentation test. The visco-elasto/plastic model with von Mises yield criterion and bilinear isotropic hardening with implicit creep was chosen. Pure elastic material constants can be determined directly from nanoindentation test by Oliver-Pharr method. Other constants determining the plastic and creep behaviour of the model have to be identified indirectly by fitting the load-displacement curve toresults from the Finite Element (FE) simulation of nanoindentation test. For statistically significant fitting procedure a multiple indents (10um grid size) with different loading rates, holding times and peak loads were performed.
Keywords
The result's identifiers
Result code in IS VaVaI
Alternative codes found
RIV/68378297:_____/11:00359950 RIV/68407700:21260/11:00180712
Result on the web
http://www.tu-chemnitz.de/mb/FestKoerpMech/YSESM/proceedings.php
DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Development of Visco-elasto-plastic Material Model for Human Trabecular Bone using Nanoindentation
Original language description
Knowledge of trabecular bone behaviour under loading is very important for the bone quality assessment. For investigation of deformation behaviour of trabecular bone a combination of computational and experimental method was used. In this study suitablevisco-elasto/plastic material model for single trabeculae was established from numerical simulation of nanoindentation test. The visco-elasto/plastic model with von Mises yield criterion and bilinear isotropic hardening with implicit creep was chosen. Pure elastic material constants can be determined directly from nanoindentation test by Oliver-Pharr method. Other constants determining the plastic and creep behaviour of the model have to be identified indirectly by fitting the load-displacement curve toresults from the Finite Element (FE) simulation of nanoindentation test. For statistically significant fitting procedure a multiple indents (10um grid size) with different loading rates, holding times and peak loads were performed.
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
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
10th Youth Symposium on Experimental Solid Mechanics
ISBN
978-3-941003-34-7
ISSN
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e-ISSN
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Number of pages
2
Pages from-to
127-128
Publisher name
Technische Universität Chemnitz
Place of publication
Chemnitz
Event location
Chemnitz
Event date
May 25, 2011
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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Basic information
Result type
D - Article in proceedings
CEP
FI - Traumatology and orthopaedics
Year of implementation
2011