PARTICLE-FILLED DENTAL COMPOSITE: SHRINKAGE INDUCED RESIDUAL STRESSES AND OVERALL MECHANICAL PROPERTIES
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21220%2F11%3A00186274" target="_blank" >RIV/68407700:21220/11:00186274 - isvavai.cz</a>
Result on the web
—
DOI - Digital Object Identifier
—
Alternative languages
Result language
angličtina
Original language name
PARTICLE-FILLED DENTAL COMPOSITE: SHRINKAGE INDUCED RESIDUAL STRESSES AND OVERALL MECHANICAL PROPERTIES
Original language description
This work is focused on simulation of the shrinkage phenomenon and its influence on overall elastic modulus of the composite and experimental verification of results. Its motivation is the discrepancy between elastic moduli in uniaxial compression and tension. Its main contribution is a hypothesis linking this discrepancy with the mentioned phenomenon of polymerization shrinkage. The residual stress field after shrinkage is computed and its effect on the tangent stiffness of certain material points is discussed. A parametric FE model with varying volume fraction and distribution of particles is built. The plasticity model used to simulate resins behaviour has critical influence on the results. It is hypothesized, that the residual stresses beyond the yield stress weaken the model response in the compressive direction. Presented hypothesis is proven using the simplest von Mises criterion and further explored using the more realistic Drucker-Prager criterion.
Czech name
—
Czech description
—
Classification
Type
D - Article in proceedings
CEP classification
JI - Composite materials
OECD FORD branch
—
Result continuities
Project
—
Continuities
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 II International Conference on Particle-based Methods
ISBN
978-84-89925-69-4
ISSN
—
e-ISSN
—
Number of pages
10
Pages from-to
100-109
Publisher name
Universidad Politechnica de Catalunya
Place of publication
Barcelona
Event location
Barcelona
Event date
Oct 26, 2011
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
—