An eigendecomposition-based and mesh-sensitivity reduced constitutive model for nonlinear analysis of concrete structures under non-proportional cyclic loading

2021 ◽  
pp. 103875
Author(s):  
Terry Y.P. Yuen ◽  
Tzu-Han Wen ◽  
Chung-Chan Hung ◽  
Hexin Zhang ◽  
Phu Anh Huy Pham ◽  
...  
Keyword(s):  
Cyclic Loading ◽  
Constitutive Model ◽  
Nonlinear Analysis ◽  
Concrete Structures ◽  
Mesh Sensitivity

scholarly journals Nonlinear analysis of concrete structures using GFEM enrichment strategy with a microplane constitutive model

2018 ◽  
Vol 11 (3) ◽  
pp. 523-534
Author(s):  
A. R. V. WOLENSKI ◽  
A. B. MONTEIRO ◽  
S. S. PENNA ◽  
R. L. S. PITANGUEIRA ◽  
F. B. BARROS
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Constitutive Model ◽  
Nonlinear Analysis ◽  
Concrete Structures ◽  
Constitutive Models ◽  
Generalized Finite Element Method ◽  
Generalized Finite Element ◽  
Enrichment Strategy ◽  
Element Method

Abstract One of the most widespread methods to the nonlinear analysis of structures is the Finite Element Method (FEM). However, there are phenomena whose behavior is not satisfactorily simulated by the standard FEM and this fact has quickened the development of new strategies such as the Generalized Finite Element Method (GFEM), understood as a variation of the FEM. In parallel, nonlinear analysis of concrete structures requires the use of constitutive models that represents the nucleation and propagation of cracks. In this paper it is used an anisotropic constitutive model, based on the microplane theory, which is able to represent the behavior of concrete structures, together with the GFEM approach. These resources are incorporated on the INSANE system (INteractive Structural ANalysis Environment), used in the numerical simulations presented here to demonstrate the feasibility of using the GFEM enrichment strategy, in the nonlinear analysis of concrete structures, with validation made from comparisons with experimental results available in the literature.

scholarly journals Material and geometric nonlinear analysis of reinforced concrete frames

2014 ◽  
Vol 7 (5) ◽  
pp. 879-904 ◽  
Author(s):  
E. Parente Jr ◽  
G. V. Nogueira ◽  
M. Meireles Neto ◽  
L. S. Moreira
Keyword(s):  
Reinforced Concrete ◽  
Nonlinear Analysis ◽  
Constitutive Relations ◽  
Concrete Structures ◽  
Reinforced Concrete Structures ◽  
Computationally Efficient ◽  
Concrete Frames ◽  
Frame Element ◽  
Computational Implementation ◽  
Plane Frame

The analysis of reinforced concrete structures until failure requires the consideration of geometric and material nonlinearities. However, nonlinear analysis is much more complex and costly than linear analysis. In order to obtain a computationally efficient approach to nonlinear analysis of reinforced concrete structures, this work presents the formulation of a nonlinear plane frame element. Geometric nonlinearity is considered using the co-rotational approach and material nonlinearity is included using appropriate constitutive relations for concrete and steel. The integration of stress resultants and tangent constitutive matrix is carried out by the automatic subdivision of the cross-section and the application of the Gauss quadrature in each subdivision. The formulation and computational implementation are validated using experimental results available in the literature. Excellent results were obtained.

scholarly journals Two Surface Elasto-Plastic Constitutive Model for Saturated Sand Subjected to Cyclic Loading.

1994 ◽  
pp. 127-136
Author(s):  
Yukio Nakata ◽  
Noriyuki Yasufuku ◽  
Hidekazu Murata ◽  
Masayuki Hyodo
Keyword(s):  
Cyclic Loading ◽  
Constitutive Model ◽  
Saturated Sand

A Dislocation Density Based Constitutive Model for Cyclic Deformation

1996 ◽  
Vol 118 (4) ◽  
pp. 441-447 ◽  
Author(s):  
Y. Estrin ◽  
H. Braasch ◽  
Y. Brechet
Keyword(s):  
Cyclic Loading ◽  
Dislocation Density ◽  
Constitutive Model ◽  
Constitutive Equations ◽  
Cyclic Deformation ◽  
Internal Variables ◽  
Density Evolution ◽  
Alloy 800H ◽  
Material Response ◽  
Dislocation Densities

A new constitutive model describing material response to cyclic loading is presented. The model includes dislocation densities as internal variables characterizing the microstructural state of the material. In the formulation of the constitutive equations, the dislocation density evolution resulting from interactions between dislocations in channel-like dislocation patterns is considered. The capabilities of the model are demonstrated for INCONEL 738 LC and Alloy 800H.

Nonlinear Analysis of RC Beam Subject to Cyclic Loading

2001 ◽  
Vol 127 (12) ◽  
pp. 1436-1444 ◽  
Author(s):  
Hyo-Gyoung Kwak ◽  
Sun-Pil Kim
Keyword(s):  
Cyclic Loading ◽  
Nonlinear Analysis ◽  
Rc Beam
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