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2D mesoscale model for concrete based on the use of interface element with a high aspect ratio
(2016-09-01)
The mesostructure of concrete plays a very important role in the process of initiation and propagation of cracks. Microcracks tend to start in the Interfacial Transition Zone (ITZ) and propagate toward the mortar matrix ...
Modeling the effects of natural fractures on the permeability of reservoir rocks
(Universidade Estadual Paulista (Unesp), 2019-07-12)
This work presents a numerical method based on Discrete Fracture Model (DFM) and the Finite Element Method (FEM), where the fractures are approximated by a reduced model. The flow along and across the fracture is described ...
Modelagem hidro-mecânica do faturamento Hidráulico de rochas via elementos finitos Com elementos especiais de interface
(Universidade Federal de PernambucoUFPEBrasilPrograma de Pos Graduacao em Engenharia Civil, 2017)
Sensitivity analysis of hydraulic properties of naturally fractured reservoirs
(2020-01-01)
This work aims to apply a sensitivity analysis to determine the influence of natural fractures in a cross section of rock reservoir cell, assessing the equivalent permeability of the medium. Using finite elements with high ...
Modeling 3-D desiccation soil crack networks using a mesh fragmentation technique
(Elsevier B.V., 2014-10-01)
The problem of desiccation cracks in soils has received increasing attention in the last few years, in both experimental investigations and modeling. Experimental research has been mainly focused on the behavior of slurries ...
Cohesive surface model for fracture based on a two-scale formulation: computational implementation aspects
(Springer, 2016-10)
The paper describes the computational aspects and numerical implementation of a two-scale cohesive surface methodology developed for analyzing fracture in heterogeneous materials with complex micro-structures. This approach ...
Failure behavior modeling of slender reinforced concrete columns subjected to eccentric load
(2015)
This work presents a numerical model to simulate the failure behavior of slender reinforced concrete columns subjected to eccentric compression loads. Due to the significant influence of the lateral displacements on the ...
Failure behavior modeling of slender reinforced concrete columns subjected to eccentric load
(2015-01-01)
This work presents a numerical model to simulate the failure behavior of slender reinforced concrete columns subjected to eccentric compression loads. Due to the significant influence of the lateral displacements on the ...
Modeling 3-D desiccation soil crack networks using a mesh fragmentation technique
(Elsevier B.V., 2015)
An adaptive concurrent two-scale FE model to predicting crack propagation in concrete
(2018-01-01)
Finite element analysis including explicitly the details of the heterogeneities (finer-scale) can dramatically increase the numerical effort and memory demand. To minimize these drawbacks, a new concurrent adaptive multiscale ...