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.

scholarly journals Modern numerical modeling of reinforced concrete structures

2021 ◽  
Vol 22 ◽  
pp. 13-20
Author(s):  
Zsolt Roszevák ◽  
István Haris
Keyword(s):  
Finite Element ◽  
Numerical Modeling ◽  
Reinforced Concrete ◽  
Numerical Experiments ◽  
Numerical Models ◽  
Concrete Structures ◽  
Nonlinear Finite Element ◽  
Reinforced Concrete Structures ◽  
Finite Element Software ◽  
Modeling Procedure

Nowadays, many computer software products are available for the numerical modeling of reinforced concrete structures; however, the accuracy of the numerical models created by the programs can only be accepted with a properly developed and verified modeling procedure. Within the framework of the present article, we present the numerical modeling possibilities of reinforced concrete structural elements and their connections through numerical models made by a modeling procedure we have built. In our studies, we also dealt with quasi-static unidirectional (horizontal and vertical) and cyclically variable direction and magnitude loads. The numerical models were created using the ATENA 3D three-dimensional nonlinear finite element software developed specifically for the study of concrete and reinforced concrete structures. In many cases, the results obtained by numerical experiments were compared with the results obtained by laboratory experiments, and some of our numerical experiments were compared with the results obtained using two-dimensional finite element software. Within the framework of this article, we would like to give a comprehensive picture of the numerical studies we have performed. We have also briefly summarized the results and experiences obtained from 3D nonlinear finite element studies.

scholarly journals On structural finite element modeling strategies and their influence on the optimization of final constructability of reinforced concrete structures

2021 ◽  
Vol 385 ◽  
pp. 111541
Author(s):  
Guillaume Hervé-Secourgeon ◽  
Estelle Hervé-Secourgeon ◽  
Marina Bottoni ◽  
François Voldoire ◽  
Mihaja Razafimbelo ◽  
...  
Keyword(s):  
Finite Element ◽  
Reinforced Concrete ◽  
Finite Element Modeling ◽  
Concrete Structures ◽  
Reinforced Concrete Structures ◽  
Element Modeling

scholarly journals TECHNOLOGY OF COMPUTATION OF REINFORCED CONCRETE STRUCTURES/GELŽBETONINŲ KONSTRUKCIJŲ ARMATŪROS AUTOMATIZUOTO SKAIČIAVIMO TECHNOLOGIJA

2001 ◽  
Vol 7 (6) ◽  
pp. 419-424
Author(s):  
Arvydas Jurkša
Keyword(s):  
Finite Element ◽  
Reinforced Concrete ◽  
Concrete Beam ◽  
New Technology ◽  
Concrete Structures ◽  
Reinforced Concrete Structures ◽  
Finite Element Program ◽  
Code Of Practice ◽  
Element Program

The author has created a new technology for concrete beam, column, slab, wall and shell reinforcement computation according to the finite element program COSMOS/M analysis results and code of practice valid in Lithuania. A brief description of the technology is included in the article. Computer programmes COSARM and COSMAX were designed for slab, wall and shell reinforcement computation. Results can be visualized graphically. New computer programmes BEAM, COSBEAM, COLUMN, COSREC and COSCIR were created for beam and column reinforcement computation. The new technology extremely enlarged the possibilities of the powerful finite element program COSMOS/M and enabled to compute very complicated reinforced concrete structures.

Probabilistic thermo-mechanical finite element analysis for the fire resistance of reinforced concrete structures

2019 ◽  
Vol 104 ◽  
pp. 22-33
Author(s):  
Roberto Chaves Spoglianti de Souza ◽  
Marco Andreini ◽  
Saverio La Mendola ◽  
Jochen Zehfuß ◽  
Christian Knaust
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Reinforced Concrete ◽  
Fire Resistance ◽  
Concrete Structures ◽  
Reinforced Concrete Structures ◽  
Element Analysis

scholarly journals Influence of ground motion duration on ductility demands of reinforced concrete structures

2019 ◽  
Vol 11 (4) ◽  
pp. 503-517 ◽  
Author(s):  
Eric De Jesus Vega ◽  
Luis A. Montejo
Keyword(s):  
Reinforced Concrete ◽  
Short Duration ◽  
Numerical Models ◽  
Dynamic Properties ◽  
Response Spectrum ◽  
Concrete Structures ◽  
Strong Motion ◽  
Reinforced Concrete Structures ◽  
Inelastic Demand ◽  
Long Duration

Abstract This article investigates the level of influence that strong motion duration may have on the inelastic demand of reinforced concrete structures. Sets of short-duration spectrally equivalent records are generated using as target the response spectrum of an actual long-duration record. The sets of short-duration records are applied to carefully calibrated numerical models of the structures along with the target long-duration records. The input motions are applied in an incremental dynamic analysis fashion, so that the duration effect at different levels of inelastic demand can be investigated. It was found that long-duration records tend to impose larger inelastic demands. However, such influence is difficult to quantify, as it was found to depend on the dynamic properties of the structure, the strength, and stiffness degrading characteristics, the approach used to generate the numerical model and the seismic scenario (target spectrum). While for some scenarios, the dominance of the long record was evident; in other scenarios, the set of short records clearly imposed larger demands than the long record. The detrimental effect of large strong motion durations was mainly observed in relatively rigid structures and poorly detailed flexible structures. The modeling approach was found to play an important role in the perceived effect of duration, with the lumped plasticity multilinear hysteretic models suggesting that the demands from the long records can be up to twice the inferred from distributed plasticity fiber models.

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