scholarly journals RC-INSANE – an interactive environment for nonlinear analysis of reinforced concrete structures

2022 ◽  
Vol 15 (3) ◽  
Author(s):  
Pâmela Daniela Nogueira Reges ◽  
Roque Luiz da Silva Pitangueira ◽  
Leandro Lopes da Silva
Keyword(s):  
Reinforced Concrete ◽  
Concrete Structures ◽  
Constitutive Models ◽  
Object Oriented Programming ◽  
Structural Behavior ◽  
Reinforced Concrete Structures ◽  
Processing Application ◽  
Bond Slip ◽  
Graphic Interface ◽  
Slip Phenomenon

Abstract The development of numerical and computational resources that can present reliable models for the analysis of reinforced concrete structures is mainly driven by its widespread use. Considering that reinforced concrete is a composite material and bond is the load-carrying mechanism, these models must consider that the structural behavior is affected by the interaction between concrete and reinforcement. On this basis, the Finite Element Method (FEM) is a well-established method able to provide consistent results for reinforced concrete modeling through reinforcement and bond models. Nevertheless, to simplify the analysis, the hypothesis of strain compatibility between concrete and reinforcement is usually considered. Under certain loads and specific geometries, this hypothesis is not valid, and the bond-slip phenomenon must be considered to fully characterize the structural behavior. To fulfill this need, this paper presents a graphic interface that enables the modeling of reinforced concrete structures through discrete and embedded reinforcement models, with the possibility to include the bond-slip phenomenon based on several constitutive laws proposed in the literature. The computational implementations were held in the INSANE (INteractive Structural ANalysis Environment), an open-source software based on the Object-Oriented Programming paradigm, which enclosures several constitutive models for nonlinear concrete modeling and different numerical techniques, and a post-processing application able to represent the results by way of a friendly-user graphic interface.

Structural behavior of reinforced concrete structures at high temperatures

1995 ◽  
Vol 156 (1-2) ◽  
pp. 121-138 ◽  
Author(s):  
Nobuyuki Yamazaki ◽  
Masatoshi Yamazaki ◽  
Tetsuo Mochida ◽  
Atsushi Mutoh ◽  
Takashi Miyashita ◽  
...  
Keyword(s):  
Reinforced Concrete ◽  
High Temperatures ◽  
Concrete Structures ◽  
Structural Behavior ◽  
Reinforced Concrete Structures

Enhanced solid element for modelling of reinforced concrete structures with bond-slip

2010 ◽  
Vol 7 (4) ◽  
pp. 347-364 ◽  
Author(s):  
Norberto Dominguez ◽  
Marco Aurelio Fernandez ◽  
Adnan Ibrahimbegovic
Keyword(s):  
Reinforced Concrete ◽  
Concrete Structures ◽  
Reinforced Concrete Structures ◽  
Bond Slip ◽  
Solid Element

scholarly journals A new bond slip model for reinforced concrete structures

2015 ◽  
Vol 32 (7) ◽  
pp. 1934-1958 ◽  
Author(s):  
C Mang ◽  
L Jason ◽  
L Davenne
Keyword(s):  
Reinforced Concrete ◽  
Large Scale ◽  
Concrete Structures ◽  
Interface Element ◽  
Displacement Curve ◽  
Reinforced Concrete Structures ◽  
Slip Model ◽  
Content Type ◽  
Bond Slip ◽  
Proposed Model

Purpose – The purpose of this paper is to present a new bond slip model for reinforced concrete structures. It consists in an interface element (3D) which represents the interface between concrete (modeled in 3D) and steel, modeled using 1D truss elements. Design/methodology/approach – The formulation of the interface element is presented and verified through a comparison with an analytical solution on an academic case. Finally, the model is compared with experimental results on a reinforced concrete tie. Findings – Contrary to the classical perfect or “no-slip” relation which supposes the same displacement between steel and concrete, the proposed model is able to reproduce both global (force-displacement curve) and local (crack openings) results. Originality/value – The proposed approach, applicable to large-scale computations, represents a valuable alternative to the no-slip relation hypothesis to correctly capture the crack properties of reinforced concrete structures.

scholarly journals Experimental and finite element analysis of bond-slip in reinforced concrete

2015 ◽  
Vol 8 (6) ◽  
pp. 787-799 ◽  
Author(s):  
A. R. V. WOLENSKI ◽  
S. S. DE CASTRO ◽  
S. S. PENNA ◽  
R. L. S. PITANGUEIRA ◽  
B. V. SILVA ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Reinforced Concrete ◽  
Complex Analysis ◽  
Concrete Structures ◽  
Fem Analysis ◽  
Material Behavior ◽  
Reinforced Concrete Structures ◽  
Element Analysis ◽  
Bond Slip

Abstract The modeling of reinforced concrete structures has taken advantage of the increasing progress on Computational Mechanics, in such way that complex phenomena, such as cracking and crushing, creep, reinforcement yielding, steel-concrete bond loss, can be modeled in a reasonable realistic way, using the proper set of numerical and computational resources. Among several options, the ones based on the Finite Element Method (FEM) allow complex analysis simulations of reinforced concrete structures, including the interaction of different nonlinear effects. This paper deals with the nonlinear finite element analysis of the bond-slip between reinforcing steel and concrete, taking into account an experimental study previously performed. The FEM analysis presented uses a combination of resources where the material behavior of concrete is described by the Microplane Constitutive Model, and an embedded reinforcement model is used to represent steel inside the concrete and take into account the effect of bond-slip. The FEM models were created using the INSANE (INteractive Structural ANalysis Environment) computational system, open source software that has a set of FEM tools for nonlinear analysis of reinforced concrete structures. The correlations between numerical-experimentals results and several parameters validate the proposed combination of resources and identifies the significance of various effects on the response.

scholarly journals Numerical-computational analysis of reinforced concrete structures considering the damage, fracture and failure criterion

2013 ◽  
Vol 6 (1) ◽  
pp. 101-120 ◽  
Author(s):  
L. A. F. de Souza ◽  
R. D. Machado
Keyword(s):  
Finite Element ◽  
Reinforced Concrete ◽  
Numerical Models ◽  
Classical Model ◽  
Concrete Structures ◽  
Constitutive Models ◽  
Reinforced Concrete Structures ◽  
Element Discretization ◽  
Structural Parts ◽  
Elastoplastic Constitutive Model

The experimental results of testing structures or structural parts are limited and, sometimes, difficult to interpret. Thus, the development of mathematical-numerical models is needed to complement the experimental analysis and allow the generalization of results for different structures and types of loading. This article makes two computational studies of reinforced concrete structures problems found in the literature, using the Finite Element Method. In these analyses, the concrete is simulated with the damage classical model proposed by Mazars and the steel by a bilinear elastoplastic constitutive model. Numerical results show the validity of the application of constitutive models which consider the coupling of theories with the technique of finite element discretization in the simulation of linear and two-dimensional reinforced concrete structures.

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