| 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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Bargmann, Swantje
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (32/32 displayed)
- 2022A design method for metamaterials: 3D transversely isotropic lattice structures with tunable auxeticitycitations
- 2022Orientation-dependent micromechanical behavior of nacre: In situ TEM experiments and finite element simulationscitations
- 2021Hierarchical Microstructure of Tooth Enameloid in Two Lamniform Shark Species, Carcharias taurus and Isurus oxyrinchuscitations
- 2020An Enhanced Method to Evaluate Tensile Yield Stress by Small Punch Tests Using Deflection Curves
- 2018Functionalisation of metal-polymer-nanocomposites : chemoelectromechanical coupling and charge carrier transport
- 20183D stochastic bicontinuous microstructures: generation, topology and elasticitycitations
- 2018A class of rate-independent lower-order gradient plasticity theoriescitations
- 2017Size affected dislocation activity in crystals : advanced surface and grain boundary conditions
- 2017Elastic behaviour at the nanoscale of innovative composites of nanoporous gold and polymer
- 2017Effect of surface elasticity on the elastic response of nanoporous gold
- 2017The role of geometrically necessary dislocations in cantilever beam bending experiments of single crystalscitations
- 2016Fourth-order strain-gradient phase mixture model for nanocrystalline fcc materialscitations
- 2016Lurie solution for spherical particle and spring layer model of interphases : its application in analysis of effective properties of composites
- 2016Study of intrinsic and extrinsic size effects on shear bands in metallic glasses
- 2016Structure-property relationships in nanoporous metallic glassescitations
- 2016Automatic three-dimensional geometry and mesh generation of periodic representative volume elements for matrix-inclusion compositescitations
- 2016Interface elasticity effects in polymer-filled nanoporous metals
- 2016Influences of RVE topology, discretization and boundary conditions in practical multiscaling - a comparison
- 2015Modeling of fracture in small punch tests for small- and large-scale yielding conditions at various temperatures
- 2015Characterization of the microstructure evolution in IF-Steel and AA6016 during plane-strain tension and Simple Shearcitations
- 2015Elastic and plastic poisson’s ratios of nanoporous gold
- 2015Finite element damage analysis of an underwater glider–ship collision
- 2015Materials based design of structures: computational modeling of the mechanical behavior of gold-polymer nanocomposites
- 2015The plastic yield and flow behavior in metallic glasses
- 2015The plastic yield and flow behavior in metallic glassescitations
- 2014Application of a gradient crystal plasticity model to numerical analysis of metal part of nanoporous metal - Polymer composites
- 2014Inherent and induced anisotropic finite visco-plasticity with applications to the forming of DC06 sheetscitations
- 2014Property optimization of porous metallic glasses via structural designcitations
- 2013Crashworthiness of magnesium sheet structurescitations
- 2011Phenomenological modeling of anisotropy induced by evolution of the dislocation structure on the macroscopic and microscopic scale
- 2011Phenomenological modeling of anisotropy induced by evolution of the dislocation structure on the macroscopic and microscopic scalecitations
- 2011Modeling of polycrystals using a gradient crystal plasticity theory that includes dissipative microstressescitations
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article
A class of rate-independent lower-order gradient plasticity theories
Abstract
<p>As the characteristic scale of products and production processes decreases, the plasticity phenomena observed start to deviate from those evidenced at the macroscale. The current research aims at investigating this gap using a lower-order gradient enhanced approach both using phenomenological continuum level as well as crystal plasticity models. In the phenomenological approach, a physically based hardening model relates the flow stress to the density of dislocations where it is assumed that the sources of immobile dislocations are both statistically stored (SSDs) as well as geometrically necessary dislocations (GNDs). In the crystal plasticity model, the evolution of the critical resolved shear stress is also defined based on the total number of dislocations. The GNDs are similarly incorporated in the hardening based on projecting the plastic strain gradients through the Burgers tensor on slip systems. A rate-independent formulation is considered that eliminates any artificial inhomogeneous hardening behavior due to numerical stabilization. The behavior of both models is compared in simulations focusing on the effect of structurally imposed gradients versus the inherent gradients arising in crystal plasticity simulations.</p>