Plane Stress Reinforced Concrete Finite Elements

1974 ◽  
Vol 100 (5) ◽  
pp. 1067-1083
Author(s):  
James Colville ◽  
Jamil Abbasi
Keyword(s):  
Reinforced Concrete ◽  
Finite Elements ◽  
Plane Stress

scholarly journals Numerical modeling of reinforced concrete structures: static and dynamic analysis

2013 ◽  
Vol 66 (4) ◽  
pp. 425-430 ◽  
Author(s):  
Jorge Luis Palomino Tamayo ◽  
Armando Miguel Awruch ◽  
Inácio Benvegnu Morsch
Keyword(s):  
Reinforced Concrete ◽  
Numerical Model ◽  
Finite Elements ◽  
Dynamic Analysis ◽  
Time Integration ◽  
Great Accuracy ◽  
Constitutive Law ◽  
Published Data ◽  
Static And Dynamic Analysis ◽  
Plates And Shells

A numerical model using the Finite Element Method (FEM) for the nonlinear static and dynamic analysis of reinforced concrete (RC) beams, plates and shells is presented in this work. For this purpose, computer programs based on plasticity theory and with crack monitoring capabilities are developed. The static analysis of RC shells up to failure load is carried out using 9-node degenerated shell finite elements while 20-node brick finite elements are used for dynamic applications. The elasto-plastic constitutive law for concrete is coupled with a strain-rate sensitive model in order to take into account high loading rate effect when transient loading is intended. The implicit Newmark scheme with predictor and corrector phases is used for time integration of the nonlinear system of equations. In both cases, the steel reinforcement is considered to be smeared and represented by membrane finite elements. Various benchmark examples are solved with the present numerical model and comparisons with other published data are performed. For all examples, the path failure, collapse loads and failure mechanism is reproduced with great accuracy.

scholarly journals Modeling reinforced concrete structures using coupling finite elements for discrete representation of reinforcements

2018 ◽  
Vol 149 ◽  
pp. 32-44 ◽  
Author(s):  
Luís A.G. Bitencourt ◽  
Osvaldo L. Manzoli ◽  
Yasmin T. Trindade ◽  
Eduardo A. Rodrigues ◽  
Daniel Dias-da-Costa
Keyword(s):  
Reinforced Concrete ◽  
Finite Elements ◽  
Concrete Structures ◽  
Reinforced Concrete Structures ◽  
Discrete Representation

Calculation of Reinforced Concrete Prismatic Shells by the Finite Element Method Using Variable Elasticity Parameters

2019 ◽  
Vol 945 ◽  
pp. 969-974
Author(s):  
V. Kruglov ◽  
V. Iurchenko
Keyword(s):  
Finite Element ◽  
Reinforced Concrete ◽  
Finite Elements ◽  
Concrete Slab ◽  
Volume Ratio ◽  
High Strength ◽  
Finite Elements Method ◽  
Software Module ◽  
Reinforced Concrete Slab ◽  
Elastic Characteristics

The paper considers the modification of the generally accepted formulation of the finite elements method by applying in the calculation I.Mileykovski’s refined technical theory of shells that takes into account the deformations of the transverse shear along the thickness of the model. When applying this solution path, it is possible to calculate thick and thin shells (plates) with equal efficiency, taking into account the complex strained state of an anisotropic material. It illustrates the inclusion in the computational algorithm of variable parameters of the elasticity of concrete, allowing more accurate evaluation of the stress-strain state in the finite element under complex (combined) loads. The presence of reinforcement in the material is modeled by dividing the structure into layers and sequentially reduction the elastic characteristics of the material based on the volume ratio of the components. The advantage of the algorithm is the ease of its integration with the conventional finite elements method. All transformations in this case consist in the modification of expressions for determining the elastic characteristics of the construction, calculating the gradient and stiffness matrices, while the sequence of further calculations does not change. This enables to use the proposed algorithm, including as a plug-in software module, expanding the capabilities of existing computing programs. The article demonstrates the application of the method in modeling a reinforced concrete slab made with the use of multi-component high-strength concrete of a heavy class having a prismatic strength under uniaxial compression of more than 110 MPa.

Nonlinear finite elements modeling and experiments of FRP-reinforced concrete piles under shear loads

Structures ◽  
2020 ◽  
Vol 28 ◽  
pp. 106-119 ◽  
Author(s):  
Ahmed H. Ali ◽  
Ahmed Gouda ◽  
Hamdy M. Mohamed ◽  
Mohamed H. Rabie ◽  
Brahim Benmokrane
Keyword(s):  
Reinforced Concrete ◽  
Finite Elements ◽  
Concrete Piles ◽  
Finite Elements Modeling ◽  
Shear Loads ◽  
Nonlinear Finite Elements ◽  
Reinforced Concrete Piles ◽  
Modeling And Experiments

Multi-Type Finite Elements Hybrid Model for Simulating Global Behavior of Reinforced Concrete Frames in Fires

2013 ◽  
Vol 353-356 ◽  
pp. 2357-2361
Author(s):  
Yong Jun Liu ◽  
Yang Yang Liu ◽  
Ran Bi ◽  
Jing Hai Zhou
Keyword(s):  
Reinforced Concrete ◽  
Finite Elements ◽  
Hybrid Model ◽  
Large Scale ◽  
Research Work ◽  
Concrete Structures ◽  
Concrete Frames ◽  
Reinforced Concrete Frame ◽  
Element Analysis ◽  
Reinforced Concrete Frames

In general, reinforced concrete frames have excellent fire resistance properties, but more and more concrete buildings collapsed in fires. The majority of past research work on the response of concrete building to fire has looked at the effects of fire upon individual structural members, and most commonly when subjected to heating from standard fire tests. At present, the fire behaviors of whole reinforced concrete frame are not adequately understood. There is a great need for development of models which consider the effects of fire on the whole structure under more realistic heating regimes. There is also a fundamental requirement for further large-scale testing of concrete structures, to observe the behavior of whole concrete structures in real fires and also for validation of advanced computer analysis tools. Accuracy and efficiency are two major concerns in finite element analysis of structural response of concrete frames in fires. In this paper, a multi-type finite elements hybrid model for simulating structural behavior of whole reinforced concrete frames in real fire is suggested.

OPTIMAL DESIGN OF RIGID PAVEMENT MADE OF PREFABRICATED REINFORCED CONCRETE SLABS BASED ON THE RESULTS OF THE CALCULATION OF THE SHEAR RESISTANCE BY FINITE ELEMENTS METHOD

2018 ◽  
Vol 8 (3) ◽  
pp. 4-7
Author(s):  
Anton O. GLAZACHEV ◽  
Liliya Y. GIMADETDINOVA ◽  
Alexey P. GONCHARUK ◽  
Igor V. NEDOSEKO
Keyword(s):  
Reinforced Concrete ◽  
Comparative Analysis ◽  
Optimal Design ◽  
Finite Elements ◽  
Shear Resistance ◽  
Numerical Calculations ◽  
Concrete Slabs ◽  
Design Tools ◽  
Rigid Pavement ◽  
Reinforced Concrete Slabs

The article presents a comparative analysis of the results of the calculation of rigid pavement on the shear stability obtained by the classical engineering method and using numerical calculations. The conclusion is made about the possibility of using modern design tools to select the optimal design of rigid pavement.

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