Buscar
Mostrando ítems 1-10 de 26
The truss‐like discrete element method in fracture and damage mechanics
(Emerald Group Publishing Limited, 2011-12)
Purpose: It is the purpose of this paper to further develop the truss-like discrete element method (DEM) in order to make it suitable to deal with damage and fracture problems. Design/methodology/approach: Finite and ...
Simplified qualitative discrete numerical model to determinate cracking pattern in brittle materials by means of finite element method
(Hindawi, 2017-07-02)
This paper presents the formulation, implementation, and validation of a simplified qualitative model to determine the crack path of solids considering static loads, infinitesimal strain, and plane stress condition. This ...
Mesoscale fracture of a bearing steel: A discrete crack approach on static and quenching problems
(Elsevier Science, 2017-08)
A discontinuous approach aimed at modeling the brittle fracture behavior of mesoscopic 100Cr6 (SAE 52100) steel specimens is presented in this work. The proposal accounts for explicitly considering carbide particles and ...
Modeling the closure behavior of natural fractures in porous media using high aspect ratio interface elements
(2021-01-01)
Many reservoirs consist of fully saturated rock masses containing a very complex natural fracture network. In such cases a decrease in the fracture fluid pressure reduces its aperture due to an increase in the effective ...
Strain injection techniques in dynamic fracture modeling
(Elsevier Science Sa, 2016-08)
A computationally affordable modeling of dynamic fracture phenomena is performed in this study by using strain injection techniques and Finite Elements with Embedded strong discontinuities (E-FEM). In the present research, ...
Coupled thermo–mechanical interface model for concrete failure analysis under high temperature
(Elsevier Science Sa, 2015-06)
A thermo–mechanical interface model for failure analysis of concrete subjected to high temperature is presented in this work. The model is an extension of a fracture energy-based interface formulation which now includes ...
Meso-scale response of concrete under high temperature based on coupled thermo-mechanical and pore-pressure interface modeling
(Pergamon-Elsevier Science Ltd, 2018-03)
This work proposes a meso-scale approach for modeling the failure behavior of concrete exposed at elevated temperature inducing thermal damage. The procedure accounts for a thermo-mechanical and pore-pressure based interface ...
Strength and Durability o Concrete Subjected to High Temperature: Continuous and Discrete Constitutive Approaches
(American Concrete Institute, 2015)
The action of high temperature in concrete is a field of much interest and attention due to its strong influence in strength, durability and serviceability conditions. Long-term exposures to high temperature fields strongly ...
Virtual elements and zero thickness interface-based approach for fracture analysis of heterogeneous materials
(Elsevier Science Sa, 2018-08)
A novel procedure for analyzing fracture processes in quasi-brittle materials and consisting in combining the discrete crack approach by means of interface elements with the Virtual Element Method is proposed and developed ...
A multiaxial fatigue damage model for isotropic materials
(2020-01-01)
This paper presents a novel damage mechanics based failure model enabling the prediction of low cycle fatigue life and residual strength of isotropic structures under multiaxial loading. The approach herein proposed does ...