Influence of Autocorrelation Length in Random Lattice-Particle Model

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Influence of Autocorrelation Length in Random Lattice-Particle Model

Popis výsledku v původním jazyce

The main objective of the paper is to describe the role of autocorrelation length of random strength field in lattice-particle model (Cusatis et al. [1, 2]). The original formulation of the lattice-particle model is extended with a random field used formodeling of spatial variability of tensile strength and fracture energy of inter-particle connections [3, 4]. The paper presents lattice-particle models of experimentally tested concrete specimens. The experimental data [5] summarize a series of three point bent concrete specimens of four different sizes with and without notch. The simulations reveal an interesting and clear dependence of the peak load on the autocorrelation length. Apart from the effect of the autocorrelation length on variability of the peak load, we show that the mean value of the peak load of unnotched specimens exhibit a significant decrease when the autocorrelation length is about equal to the size of the fracture process zone.

Název v anglickém jazyce

Influence of Autocorrelation Length in Random Lattice-Particle Model

Popis výsledku anglicky

The main objective of the paper is to describe the role of autocorrelation length of random strength field in lattice-particle model (Cusatis et al. [1, 2]). The original formulation of the lattice-particle model is extended with a random field used formodeling of spatial variability of tensile strength and fracture energy of inter-particle connections [3, 4]. The paper presents lattice-particle models of experimentally tested concrete specimens. The experimental data [5] summarize a series of three point bent concrete specimens of four different sizes with and without notch. The simulations reveal an interesting and clear dependence of the peak load on the autocorrelation length. Apart from the effect of the autocorrelation length on variability of the peak load, we show that the mean value of the peak load of unnotched specimens exhibit a significant decrease when the autocorrelation length is about equal to the size of the fracture process zone.

Druh

O - Ostatní výsledky

CEP obor

JN - Stavebnictví

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2015

Kód důvěrnosti údajů

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