Discrete Modeling of Strain Rate Effect in Concrete Fracture
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26110%2F17%3APU125272" target="_blank" >RIV/00216305:26110/17:PU125272 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.4028/www.scientific.net/KEM.754.345" target="_blank" >http://dx.doi.org/10.4028/www.scientific.net/KEM.754.345</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.4028/www.scientific.net/KEM.754.345" target="_blank" >10.4028/www.scientific.net/KEM.754.345</a>
Alternative languages
Result language
angličtina
Original language name
Discrete Modeling of Strain Rate Effect in Concrete Fracture
Original language description
Concrete fracture can be simulated in static regime, however, it is a dynamical process. For very slow loading rates, the kinetic energy is negligible compared to the energy dissipated by fracturing, and the influence of inertia can be neglected. In all other cases, neglecting the influence of inertia forces can lead to improper results. With increasing loading rate, increase in strength and energy dissipation as well as changes in crack pattern can be observed. The contribution presents dynamical simulations of experiments on concrete specimens under various displacement rates, from very slow, quasi-static, to high displacement rates. The simulations are calculated using discrete particle model, the material is represented by a system of interconnected ideally rigid polyhedral particles. The solution of equations of motion is calculated using implicit time integration Newmark scheme. The constitutive behavior of the material is strain rate independent. For high strain rates the influence of inertia forces dominates and is mainly responsible for increase in loading forces as well as for change in the crack pattern and crack branching. The results obtained with the model are compared to experimental data from literature.
Czech name
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Czech description
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Classification
Type
D - Article in proceedings
CEP classification
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OECD FORD branch
20102 - Construction engineering, Municipal and structural engineering
Result continuities
Project
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Continuities
S - Specificky vyzkum na vysokych skolach
Others
Publication year
2017
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Article name in the collection
Key Engineering Materials
ISBN
978-3-0357-1168-4
ISSN
1662-9795
e-ISSN
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Number of pages
4
Pages from-to
345-348
Publisher name
Neuveden
Place of publication
Neuveden
Event location
Florencie
Event date
Jul 18, 2017
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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