Discrete modeling of elastic heterogeneous media

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26110%2F24%3APU152127" target="_blank" >RIV/00216305:26110/24:PU152127 - isvavai.cz</a>

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S0093641324000375" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0093641324000375</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.mechrescom.2024.104277" target="_blank" >10.1016/j.mechrescom.2024.104277</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Discrete modeling of elastic heterogeneous media

Popis výsledku v původním jazyce

Discrete models provide advantages in simulating fracture in quasi -brittle materials due, in part, to their simplicity in representing cracking and other forms of displacement discontinuity. However, the stress analyses that form the basis for fracture simulation are complicated by difficulties in modeling the Poisson effect and other aspects of elastic behavior. The capabilities of Voronoi-cell lattice models, which are a form of particle -based lattice model, for elastic stress analysis are evaluated. It is found that the conventional means for representing the Poisson effect in particle -based lattice models result in spatially correlated stress oscillations that, at first glance, mimic the effects of material heterogeneity. The correlation length is dependent on discretization size. Alternatively, material heterogeneity can be introduced into elastically uniform lattice models via random assignments of material properties, independent of mesh size and geometry.

Název v anglickém jazyce

Discrete modeling of elastic heterogeneous media

Popis výsledku anglicky

Discrete models provide advantages in simulating fracture in quasi -brittle materials due, in part, to their simplicity in representing cracking and other forms of displacement discontinuity. However, the stress analyses that form the basis for fracture simulation are complicated by difficulties in modeling the Poisson effect and other aspects of elastic behavior. The capabilities of Voronoi-cell lattice models, which are a form of particle -based lattice model, for elastic stress analysis are evaluated. It is found that the conventional means for representing the Poisson effect in particle -based lattice models result in spatially correlated stress oscillations that, at first glance, mimic the effects of material heterogeneity. The correlation length is dependent on discretization size. Alternatively, material heterogeneity can be introduced into elastically uniform lattice models via random assignments of material properties, independent of mesh size and geometry.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20102 - Construction engineering, Municipal and structural engineering

Projekt

<a href="/cs/project/GF22-06684K" target="_blank" >GF22-06684K: Stochastická únava betonu řešená přístupy založenými na disipaci energie s ohledem na vzájemné působení časových a teplotních účinků</a><br>

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2024

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

MECHANICS RESEARCH COMMUNICATIONS

ISSN

0093-6413

e-ISSN

—

Svazek periodika

137

Číslo periodika v rámci svazku

104277

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

8

Strana od-do

1-8

Kód UT WoS článku

001232395800001

EID výsledku v databázi Scopus

2-s2.0-85190747251