Numerical approach of the steel-concrete bond behavior using pull-out models
| Autor: | Silvana De Nardin, Fernando Menezes de Almeida Filho, Ana Lúcia Homce de Cresce El Debs |
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| Rok vydání: | 2019 |
| Předmět: |
Materials science
contact surface finite element method 0211 other engineering and technologies General Physics and Astronomy 020101 civil engineering Monotonic function 02 engineering and technology Slip (materials science) Steel bar 0201 civil engineering ESTRUTURAS 021105 building & construction General Materials Science numerical approach bond strength Computer simulation business.industry Bond strength Numerical analysis General Chemistry Structural engineering Finite element method Compressive strength pull-out tests business |
| Zdroj: | Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual) Universidade de São Paulo (USP) instacron:USP Matéria (Rio de Janeiro) v.24 n.2 2019 Matéria (Rio de Janeiro. Online) instacron:RLAM Matéria (Rio de Janeiro), Volume: 24, Issue: 2, Article number: e12341, Published: 10 JUN 2019 |
| Popis: | This paper deals with the analysis of monotonic loading behavior in pull-out tests. The main objective is to obtain a reliable numerical model to represent the steel-concrete bond behavior using previously obtained experimental results. The tests were performed in RILEM pull-out specimen using 10 mm steel bar and concrete with compressive strength of 30 MPa. The numerical study used Ansys® software, based on FEM (Finite Elements Method). The numerical simulation adopted non-linear constitutive relationships to represent the behavior of both concrete and steel. A contact surface composed of special finite elements modeled the interface between the concrete and the steel bar, allowing a steel–concrete slip. The numerical analysis performed with variation of the main parameters of the software permitted determining the best ones, and choosing them to obtain a good representation of the bond phenomena. The numerical results had a good agreement with the experimental results. Both linear and non-linear approaches represented the pre-peak behavior, however only the non-linear model gave the best approach for the pull-out force. In addition, the numerical results had shown the simplified model can be used to represent the steel-concrete bond behavior reducing the processing time for current structures analysis. Keywords: bond strength, pull-out tests, numerical approach, contact surface, finite element method. |
| Databáze: | OpenAIRE |
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