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Article
A Comparative Review of XFEM, Mixed FEM and Phase-Field Models for Quasi-brittle Cracking
In this work, a critical comparison between three different numerical approaches for the computational modelling of quasi-brittle structural failure is presented. Among the many finite element approaches devis...
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Article
Architecture of a multi-crack model with full closing, reopening and sliding capabilities
This paper discusses the finite element modeling of cracking of quasi-brittle materials under cyclic loading. A damage based crack model is proposed, which considers tensile and compressive damage, irreversibl...
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Article
Appraisement of planar, bending and twisting cracks in 3D with isotropic and orthotropic damage models
This paper discusses the modeling of cracking in quasi-brittle materials using isotropic and orthotropic damage constitutive laws. A mixed strain/displacement finite element formulation is used, taking advanta...
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Article
Finite element modeling of quasi-brittle cracks in 2D and 3D with enhanced strain accuracy
This paper discusses the finite element modeling of cracking in quasi-brittle materials. The problem is addressed via a mixed strain/displacement finite element formulation and an isotropic damage constitutive...
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Article
Local–global strategy for the prediction of residual stresses in FSW processes
This work describes the local–global strategy proposed for the computation of residual stresses in friction stir welding (FSW) processes. A coupling strategy between the analysis of the process zone nearby the...
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Article
Challenges in Thermo-mechanical Analysis of Friction Stir Welding Processes
This paper deals with the numerical simulation of friction stir welding (FSW) processes. FSW techniques are used in many industrial applications and particularly in the aeronautic and aerospace industries, whe...
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Article
Explicit mixed strain–displacement finite elements for compressible and quasi-incompressible elasticity and plasticity
This paper presents an explicit mixed finite element formulation to address compressible and quasi-incompressible problems in elasticity and plasticity. This implies that the numerical solution only involves d...
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Article
Material flow visualization in Friction Stir Welding via particle tracing
This work deals with the modeling of the material flow in Friction Stir Welding (FSW) processes using particle tracing method. For the computation of particle trajectories, three accurate and computationally e...
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Article
Explicit mixed strain-displacement finite element for dynamic geometrically non-linear solid mechanics
Low-order finite elements face inherent limitations related to their poor convergence properties. Such difficulties typically manifest as mesh-dependent or excessively stiff behaviour when dealing with complex...
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Article
Discovery and molecular characterization of a new cryptovirus dsRNA genome from Japanese persimmon through conventional cloning and high-throughput sequencing
Through the application of next generation sequencing, in synergy with conventional cloning of DOP-PCR fragments, two double-stranded RNA (dsRNA) molecules of about 1.5 kbp in size were isolated from leaf tiss...
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Article
Computational Modeling and Sub-Grid Scale Stabilization of Incompressibility and Convection in the Numerical Simulation of Friction Stir Welding Processes
This paper deals with the computational modeling and sub-grid scale stabilization of incompressibility and convection in the numerical simulation of the material flow around the probe tool in a friction stir w...
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Chapter
Numerical Simulation and Visualization of Material Flow in Friction Stir Welding via Particle Tracing
This work deals with the numerical simulation and material flow visualization of Friction Stir Welding (FSW) processes. The fourth order Runge-Kutta (RK4) integration method is used for the computation of part...
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Article
Modeling Precipitate Dissolution in Hardened Aluminium Alloys using Neural Networks
This work presents a neural networks approach for finding the effective activation energy and modeling the dissolution rate of hardening precipitates in aluminium alloys using inverse analysis. As way of illus...
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Chapter and Conference Paper
Current Developments on the Coupled Thermomechanical Computational Modeling of Metal Casting Processes
The coupled thermomechanical computational modeling of metal casting processes has been one of the research topics of great interest over the last years. However, despite the considerable advances achieved in ...
