| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Nielsen, Kl
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (42/42 displayed)
- 2024A micro-mechanics based extension of the GTN continuum model accounting for random void distributionscitations
- 2024Steady-state fracture toughness of elastic-plastic solids: isotropic versus kinematic hardeningcitations
- 2023A micro-mechanics based extension of the GTN continuum model accounting for random void distributionscitations
- 2022Dynamic size effects across the scales
- 2022Gradient strengthening effects in mode I tearing of ductile plate at the engineering scale
- 2022Plastic buckling of columns at the micron scalecitations
- 2021Computational rate-independent strain gradient crystal plasticitycitations
- 2020Cohesive traction–separation relations for tearing of ductile plates with randomly distributed void nucleation sitescitations
- 2020Fundamental differences between plane strain bending and far-field plane strain tension in ductile plate failurecitations
- 2019Investigation of a gradient enriched Gurson-Tvergaard model for porous strain hardening materialscitations
- 2019An investigation of back stress formulations under cyclic loadingcitations
- 2019Finite strain analysis of size effects in wedge indentation into a Face-Centered Cubic (FCC) single crystalcitations
- 2019Experimental Investigation of Crack Propagation Mechanisms in Commercially Pure Aluminium Platescitations
- 2019Effect of damage-related microstructural parameters on plate tearing at steady statecitations
- 2019A numerical framework for rate-independent for Fleck and Willis crystal plasticity
- 2019Parameter window for assisted crack tip flipping: Studied by a shear extended Gurson modelcitations
- 2019Micro-mechanics based cohesive zone modeling of full scale ductile plate tearing: From initiation to steady-statecitations
- 2019Grain-size affected mechanical response and deformation behavior in microscale reverse extrusioncitations
- 2018Steady-state fracture toughness of elastic-plastic solids: Isotropic versus kinematic hardeningcitations
- 2018A novel numerical framework for self-similarity in plasticity: Wedge indentation in single crystalscitations
- 2018Hardening and strengthening behavior in rate-independent strain gradient crystal plasticitycitations
- 2017An incremental flow theory for crystal plasticity incorporating strain gradient effectscitations
- 2017Crack Tip Flipping under Mode I Tearing: Investigated by X-Ray Tomographycitations
- 2016Crack Tip Flipping Under Mode I/III Tearing
- 2016Attaining the rate-independent limit of a rate-dependent strain gradient plasticity theorycitations
- 2016On modeling micro-structural evolution using a higher order strain gradient continuum theorycitations
- 2016Rolling at small scalescitations
- 2015Rolling induced size effects in elastic–viscoplastic sheet metalscitations
- 2015Strain gradient crystal plasticity: A continuum mechanics approach to modeling micro-structural evolution
- 2013Observations on Mode I ductile tearing in sheet metalscitations
- 2012Rate sensitivity of mixed mode interface toughness of dissimilar metallic materials: Studied at steady statecitations
- 2012Strain gradient effects on steady state crack growth in rate-sensitive materialscitations
- 2011Failure by void coalescence in metallic materials containing primary and secondary voids subject to intense shearingcitations
- 2010Strain hardening and damage in 6xxx series aluminum alloy friction stir weldscitations
- 2010Predicting failure response of spot welded joints using recent extensions to the Gurson modelcitations
- 2010Ductile shear failure or plug failure of spot welds modelled by modified Gurson modelcitations
- 2010Modelling of plastic flow localization and damage development in friction stir welded 6005A aluminium alloy using physics based strain hardening lawcitations
- 2010Modelling of damage development and ductile failure in welded joints
- 2009Effect of a shear modified Gurson model on damage development in a FSW tensile specimencitations
- 2008Ductile damage development in friction stir welded aluminum (AA2024) jointscitations
- 2008Ductile Damage Development in Friction Stir Welded Aluminumjoints
- 2007Ductile Damage Development in Friction Stir Welded Aluminum Joints
Places of action
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article
Predicting failure response of spot welded joints using recent extensions to the Gurson model
Abstract
The plug failure modes of resistance spot welded shear-lab and cross-tension test specimens are studied, using recent extensions to the Gurson model. A comparison of the predicted mechanical response is presented when using either: (i) the Gurson-Tvergaard-Needleman model (GTN-model), (ii) the shear-modified GTN-model by Nahshon and Hutchinson that also describes damage development at low triaxiality (NH-model) or (iii) the Gologanu-Leblond-Devaux model (GLD-model) accounting for non-spherical void growth. The failure responses predicted by the various models are discussed in relation to their approximate description of the nucleation, growth and coalescence of microvoids. Using the void shape factor of the GLD-model, a simple approach for approximating void nucleation by either particle fracture or particle-matrix decohesion is applied and a study of the subsequent void shape evolution is presented. The models are applied to predict failure of specimens containing a fully intact weld nugget as well as a partly removed weld nugget to address the problems of shrinkage voids or larger weld defects. All analysis are carried out by full 3D finite element modelling.