David Morin
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View article: Using DIC-based FEM to determine work-hardening parameters in structural steels
Using DIC-based FEM to determine work-hardening parameters in structural steels Open
Optical measurement techniques are essential tools in materials testing for acquiring non-intrusive, full-field data. Traditionally, constitutive parameters have been derived from point-wise measurements. However, full-field measurements o…
View article: Influence of the state-of-charge on the mechanical behaviour of lithium-ion pouch cells under uniaxial compression
Influence of the state-of-charge on the mechanical behaviour of lithium-ion pouch cells under uniaxial compression Open
With extensive recent deployment of lithium batteries in stationary and mobility applications, integration engineers face a challenging burden for design and planning the static and dynamic external environment surrounding cells. Essential…
View article: Testing and modelling of aluminium cans for prismatic lithium-ion cells under crash loading
Testing and modelling of aluminium cans for prismatic lithium-ion cells under crash loading Open
The mechanical performance of a deep-drawn AA3003-H14 aluminium can, which serves as an external shell for vehicle lithium-ion cells, was investigated in the present study. The experimental program included material testing at different lo…
View article: Modelling of welded aluminium connections in large-scale analyses
Modelling of welded aluminium connections in large-scale analyses Open
This article addresses large-scale analyses of welded aluminium connections where the weak zones are to be represented by a few shell elements. A combined experimental and numerical study on the behaviour and modelling of welded aluminium …
View article: Transferability of Temperature Evolution of Dissimilar Wire-Arc Additively Manufactured Components by Machine Learning
Transferability of Temperature Evolution of Dissimilar Wire-Arc Additively Manufactured Components by Machine Learning Open
Wire-arc additive manufacturing (WAAM) is a promising industrial production technique. Without optimization, inherent temperature gradients can cause powerful residual stresses and microstructural defects. There is therefore a need for dat…
View article: Experimental and numerical study on the tensile ductility of an aluminium alloy with heat-affected zones
Experimental and numerical study on the tensile ductility of an aluminium alloy with heat-affected zones Open
In the case of aluminium structures, welding may introduce weak zones, so-called heat-affected zones (HAZ), close to the weld. Such zones should be accounted for when predicting the overall behaviour of structures since the deformation ten…
View article: Modelling of ductile failure in materials with heterogeneous particle structure using localization analysis
Modelling of ductile failure in materials with heterogeneous particle structure using localization analysis Open
In this study, we evaluate the use of strain localization analysis based on the imperfection band approach to model the effect of heterogeneous particle distribution on the ductile failure of structural metallic materials. To this end, ten…
View article: A gradient-based non-local GTN model: Explicit finite element simulation of ductile damage and fracture
A gradient-based non-local GTN model: Explicit finite element simulation of ductile damage and fracture Open
Non-local models have over the years been established as an effective approach to solve the pathological mesh dependency problem observed in finite element simulation of strain-softening materials. This paper presents the formulation, impl…
View article: A numerical study on the effect of porosity distribution on ductile failure using size-dependent finite element-based representative volume elements
A numerical study on the effect of porosity distribution on ductile failure using size-dependent finite element-based representative volume elements Open
In this work, we use the size-dependent Monchiet-Bonnet porous plasticity model to study the influence of void size distribution on ductile fracture. The size effect implies that the void growth depends on the material intrinsic length sca…
View article: Ductile tearing of aluminium plates: experiments and modelling
Ductile tearing of aluminium plates: experiments and modelling Open
This paper presents an experimental and numerical study on quasi-static ductile tearing of thin plates of the aluminium alloy AA6016 in three tempers. Depending on the temper, the main fracture mechanism in the plate tearing tests changes …
View article: Micromechanics-based simulation of quasi-static and dynamic crushing of double-chamber 6000-series aluminium profiles
Micromechanics-based simulation of quasi-static and dynamic crushing of double-chamber 6000-series aluminium profiles Open
Numerical simulation is becoming an increasingly important tool in the development of crash components in the automotive industry. With accurate numerical predictions of deformation and fracture, developers may be able to optimize and util…
View article: Neural network modelling of mechanical joints for the application in large-scale crash analyses
Neural network modelling of mechanical joints for the application in large-scale crash analyses Open
This paper presents an artificial neural network (NN) modelling approach to represent a connector model in large-scale finite element explicit crash simulations. The NN model was established to describe the local force–deformation response…
View article: Ductile failure predictions using micromechanically-based computational models
Ductile failure predictions using micromechanically-based computational models Open
Three different micromechanically-based computational models for fracture in porous ductile solids are compared and assessed. Model A is a unit cell model of a porous ductile solid comprising a uniform periodic distribution of voids subjec…
View article: Testing and modelling of butt-welded connections in thin-walled aluminium structures
Testing and modelling of butt-welded connections in thin-walled aluminium structures Open
The present paper experimentally investigated the mechanical behaviour of butt-welded joints and evaluated suitable numerical approaches for modelling them in thin-walled structures with large shell-based models. Welded connections of both…
View article: A novel tests set-up for validation of connector models subjected to static and impact loadings
A novel tests set-up for validation of connector models subjected to static and impact loadings Open
A novel test set-up is presented for validation of hybrid connector models between steel and aluminium components subjected to static and impact loading. The proposed components consisted of two hat profiles in steel and aluminium joined b…
View article: A pragmatic orthotropic elasticity-based damage model with spatially distributed properties applied to short glass-fibre reinforced polymers
A pragmatic orthotropic elasticity-based damage model with spatially distributed properties applied to short glass-fibre reinforced polymers Open
This article presents a simple progressive damage model for quasi-brittle materials, combining orthotropic elasticity with a scalar damage model including spatial variation of the damage initiation strain and the crack band method for soft…
View article: A numerical study of a size-dependent finite-element based unit cell with primary and secondary voids
A numerical study of a size-dependent finite-element based unit cell with primary and secondary voids Open
Aluminium alloys contain various types of intermetallic particles with different sizes, such as constituent particles and dispersoids. The main mechanism of ductile fracture in these materials is assumed to be nucleation of voids around th…
View article: On the effect of pilot holes on the mechanical behaviour of flow-drill screw joints. Experimental tests and mesoscale numerical simulations
On the effect of pilot holes on the mechanical behaviour of flow-drill screw joints. Experimental tests and mesoscale numerical simulations Open
This research work investigated in detail the mechanical performance of a flow-drill screw connection of two aluminium plates with and without pilot holes. An extensive experimental campaign involving material and joint tests under differe…
View article: Micromechanical modelling of ductile fracture in pipeline steel using a bifurcation-enriched porous plasticity model
Micromechanical modelling of ductile fracture in pipeline steel using a bifurcation-enriched porous plasticity model Open
In this paper, we investigate the possibility of predicting ductile fracture of pipeline steel by using the Gurson–Tvergaard–Needleman (GTN) model where the onset of void coalescence is determined based on in situ bifurcation analyses. To …
View article: Calibration of the modified Mohr-Coulomb fracture model by use of localization analyses for three tempers of an AA6016 aluminium alloy
Calibration of the modified Mohr-Coulomb fracture model by use of localization analyses for three tempers of an AA6016 aluminium alloy Open
This paper presents a novel calibration procedure of the modified Mohr-Coulomb (MMC) fracture model by use of localization analyses and applies it for three tempers of an AA6016 aluminium alloy. The localization analyses employ the imperfe…
View article: Fracture mechanisms in largely strained solids due to surface instabilities
Fracture mechanisms in largely strained solids due to surface instabilities Open
The effect of self-contacting surface defects generated by largely compressing metals on the ductile-to-brittle transition observed in metallic structures is investigated. In order to analyse such an effect, a finite element model of a hal…