Mesh dependency and related aspects of lattice models

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26110%2F10%3APU90718" target="_blank" >RIV/00216305:26110/10:PU90718 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Mesh dependency and related aspects of lattice models
Original language description
We study the effect of discretization of lattice models. Two basic cases are examined: (i) homogeneous lattices, where all elements share the same strength and (ii) lattices in which the properties are assigned to the elements according to their correspondence to three phases of concrete, namely matrix, aggregates, and the interfacial transitional zone. These dependencies are studied with both, notched and unnotched beams loaded in three point bending. We report the results for regular discretization and irregular networks obtained via Voronoi tessellation. The dependence of strength is compared to various size effect formulas, and we show that in the case of homogeneous lattices, the fineness of discretization of the specimens of the same size can mimic variations in the size of lattice models with the same discretization density. In the case of heterogeneity (ii), we report how both the peak force and fracture energy depend on the mesh resolution.
Czech name
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Czech description
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Project
<a href="/en/project/GD103%2F09%2FH085" target="_blank" >GD103/09/H085: Modern composite structures</a><br>
Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year
2010
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection
Conference on Fracture Mechanics of Concrete and Concrete Structures (FRAMCOS 7)
ISBN
978-89-5708-180-8
ISSN
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e-ISSN
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Number of pages
8
Pages from-to
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Publisher name
Neuveden
Place of publication
Jeju, Korea
Event location
JEJU
Event date
Jun 7, 2010
Type of event by nationality
WRD - Celosvětová akce
UT code for WoS article
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