Four-Point Bending Test on a High Reinforced Concrete Beam: Nonlinear Numerical Analysis Using Material Parameter Identification

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26110%2F19%3APU131799" target="_blank" >RIV/00216305:26110/19:PU131799 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1088/1757-899X/471/5/052052" target="_blank" >http://dx.doi.org/10.1088/1757-899X/471/5/052052</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1088/1757-899X/471/5/052052" target="_blank" >10.1088/1757-899X/471/5/052052</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Four-Point Bending Test on a High Reinforced Concrete Beam: Nonlinear Numerical Analysis Using Material Parameter Identification

Popis výsledku v původním jazyce

The numerical analysis of concrete or reinforced concrete structures using nonlinear mechanics tools is currently the focus of interest of many scientific institutions. Today, numerical modelling of the real behaviour of concrete and concrete reinforcement is mainly performed with the aid of nonlinear constitutive relations (nonlinear material models). Current modern computational systems based on the implicit or explicit finite element method include a relatively large amount of nonlinear material models intended for modelling the real behaviour of concrete and concrete reinforcement. However, the accuracy of the simulated behaviour of real concrete and reinforced concrete structures depends on the correct definition of the input parameter values of these material models. This makes the nonlinear numerical analysis process quite difficult because the correct definition of the input parameter values of (in particular) the material models for the modelling of concrete is often not a trivial task. However, a combination of nonlinear numerical analysis with the identification of the input parameter values of the used material models based on relevant experimental data can be currently employed to address this task. The aim of this paper is to perform a nonlinear numerical analysis of a high reinforced concrete beam stressed by four-point bending so that the numerical response of the beam corresponds to the real response of the beam as closely as possible. For this purpose, an optimisation-based parameter identification process is used in this paper. Within this process, the input parameter values of a nonlinear material model of concrete which is known as the modified CSCM model and implemented in LS-DYNA finite element software are identified (optimised). Specifically, the parameter identification is based on the combination of optimisation methods with nonlinear numerical simulations and experimental data. The optimised input parameter values of the material model ar

Název v anglickém jazyce

Four-Point Bending Test on a High Reinforced Concrete Beam: Nonlinear Numerical Analysis Using Material Parameter Identification

Popis výsledku anglicky

The numerical analysis of concrete or reinforced concrete structures using nonlinear mechanics tools is currently the focus of interest of many scientific institutions. Today, numerical modelling of the real behaviour of concrete and concrete reinforcement is mainly performed with the aid of nonlinear constitutive relations (nonlinear material models). Current modern computational systems based on the implicit or explicit finite element method include a relatively large amount of nonlinear material models intended for modelling the real behaviour of concrete and concrete reinforcement. However, the accuracy of the simulated behaviour of real concrete and reinforced concrete structures depends on the correct definition of the input parameter values of these material models. This makes the nonlinear numerical analysis process quite difficult because the correct definition of the input parameter values of (in particular) the material models for the modelling of concrete is often not a trivial task. However, a combination of nonlinear numerical analysis with the identification of the input parameter values of the used material models based on relevant experimental data can be currently employed to address this task. The aim of this paper is to perform a nonlinear numerical analysis of a high reinforced concrete beam stressed by four-point bending so that the numerical response of the beam corresponds to the real response of the beam as closely as possible. For this purpose, an optimisation-based parameter identification process is used in this paper. Within this process, the input parameter values of a nonlinear material model of concrete which is known as the modified CSCM model and implemented in LS-DYNA finite element software are identified (optimised). Specifically, the parameter identification is based on the combination of optimisation methods with nonlinear numerical simulations and experimental data. The optimised input parameter values of the material model ar

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

20101 - Civil engineering

Projekt

<a href="/cs/project/GA17-23578S" target="_blank" >GA17-23578S: Identifikace míry poškození vyztuženého betonu při extrémním zatížení</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2019

Kód důvěrnosti údajů

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

Název statě ve sborníku

World Multidisciplinary Civil Engineering

ISBN

—

ISSN

1757-899X

e-ISSN

—

Počet stran výsledku

9

Strana od-do

1-9

Název nakladatele

Neuveden

Místo vydání

Neuveden

Místo konání akce

Praha

Datum konání akce

18. 6. 2018

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

000465811802011