A probabilistic crack band model for quasibrittle fracture

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26110%2F16%3APU122692" target="_blank" >RIV/00216305:26110/16:PU122692 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.1115/1.4032692" target="_blank" >http://dx.doi.org/10.1115/1.4032692</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1115/1.4032692" target="_blank" >10.1115/1.4032692</a>

Result language
angličtina
Original language name
A probabilistic crack band model for quasibrittle fracture
Original language description
This paper presents a new crack band model (CBM) for probabilistic analysis of quasi-brittle fracture. The model is anchored by a probabilistic treatment of damage initiation, localization, and propagation. This model regularizes the energy dissipation of a single material element for the transition between damage initiation and localization. Meanwhile, the model also takes into account the probabilistic onset of damage localization inside the finite element (FE) for the case where the element size is larger than the crack band width. The random location of the localization band is related to the random material strength, whose statistics is described by a finite weakest link model. The present model is applied to simulate the probability distributions of the nominal strength of different quasibrittle structures. It is shown that for quasibrittle structures direct application of the conventional CBM for stochastic FE simulations would lead to mesh-sensitive results. To mitigate such mesh dependence, it is essential to incorporate the strain localization mechanism into the formulation of the sampling distribution functions of material constitutive parameters.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20102 - Construction engineering, Municipal and structural engineering

Project
<a href="/en/project/GJ15-19865Y" target="_blank" >GJ15-19865Y: Discrete fracture models: adaptive remeshing, energy release rate, and stress along boundaries</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2016
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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