Size Effect on Strength Statistics of Prenotched Quasibrittle Structures

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26110%2F24%3APU151168" target="_blank" >RIV/00216305:26110/24:PU151168 - isvavai.cz</a>

Result on the web

<a href="https://ascelibrary.org/doi/10.1061/JENMDT.EMENG-7629" target="_blank" >https://ascelibrary.org/doi/10.1061/JENMDT.EMENG-7629</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1061/JENMDT.EMENG-7629" target="_blank" >10.1061/JENMDT.EMENG-7629</a>

Result language

angličtina

Original language name

Size Effect on Strength Statistics of Prenotched Quasibrittle Structures

Original language description

This paper presents a stochastic analysis of the size effect on the nominal strength of quasibrittle structures with a large preexisting notch. This type of scaling behavior has been extensively studied within a deterministic framework. Little attention is paid to stochastic analysis, which is essential for reliability-based analysis and design of engineering structures. Stochastic finite element simulations are performed to study the failure of geometrically similar beams of different sizes. The numerical analysis uses a continuum damage model, in which the tensile strength and fracture energy are modeled by homogeneous random fields. Different correlation lengths are considered as a parametric study. The analysis yields the size effects on the mean and coefficient of variation (CoV) of the nominal structural strength. It is shown that the size effect on the mean strength agrees well with the Bazant size effect model. The simulation predicts a strong size effect on the CoV of the nominal strength. Small-, intermediate-, and large-size asymptotes are derived analytically for the scaling behavior of the strength CoV. Based on these asymptotes, an approximate scaling equation is proposed for the CoV of nominal strength. The effect of the correlation length on the simulated failure behavior is discussed.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

20102 - Construction engineering, Municipal and structural engineering

Project

<a href="/en/project/GF22-06684K" target="_blank" >GF22-06684K: Energy dissipation-based approach to stochastic fatigue of concrete considering interacting time and temperature effects</a><br>

Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2024

Confidentiality

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

Name of the periodical

Journal of Engineering Mechanics

ISSN

0733-9399

e-ISSN

1943-7889

Volume of the periodical

150

Issue of the periodical within the volume

6

Country of publishing house

US - UNITED STATES

Number of pages

11

Pages from-to

„04024025-1“-„0402402-11“

UT code for WoS article

001202575400008

EID of the result in the Scopus database

2-s2.0-85189284328