| 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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Wriggers, Peter
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (15/15 displayed)
- 2022A Sharp-Interface Model of the Diffusive Phase Transformation in a Nickel-Based Superalloy
- 2022A sharp-interface model for diffusional evolution of precipitates in visco-plastic materials.citations
- 2021Bayesian inversion for unified ductile phase-field fracture
- 2020Magnesium Alloys for Open-Pored Bioresorbable Implants
- 2020A Review on Cementitious Self-Healing and the Potential of Phase-Field Methods for Modeling Crack-Closing and Fracture Recoverycitations
- 2020Numerical investigations regarding a novel process chain for the production of a hybrid bearing bushingcitations
- 2018Scalar Damage in 2D solids: a VEM formulation
- 20183D Dynamic Crack Propagation by the Extended Finite Element Method and a Gradient-Enhanced Damage Modelcitations
- 2017Multi-scale study of high-strength low-thermal-conductivity cement composites containing cenospherescitations
- 2017Dynamic brittle fracture by XFEM and gradient-enhanced damage
- 2016Delamination growth in composite laminates of variable stiffnesscitations
- 2016Simulation of Sheet-Bulk Metal Forming Processes with Simufact.forming using User-Subroutinescitations
- 20163d crack propagation by the extended finite element method and a gradient enhanced damage model
- 2016Non-local ductile damage formulations for sheet bulk metal forming
- 2011Numerical modelling of intergranular fracture in polycrystalline materials and grain size effects
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article
A sharp-interface model for diffusional evolution of precipitates in visco-plastic materials.
Abstract
<p>This paper describes a 3D implementation of the sharp-interface theory for material heterogeneities and is, hence, able to identify equilibrium shapes of precipitates in superalloys. The theory is adopted from Morton E. Gurtin and extended by crystal plasticity in the bulk. Crystal plasticity relaxes stresses at the phase interface, which leads to subsequent coalescence of the precipitates. The fully implicit model employs the extended finite element method (XFEM) in conjunction with level sets. The level set is advected in a velocity field computed by the stress-modified Gibbs-Thomson interface condition. Mechanical equilibrium and level set update are solved in a staggered procedure. Jump quantities are treated by means of a suitable enriched least square smoothing. Multiple schemes for the computation of curvature of surfaces in the context of the XFEM are presented and compared. Equilibrium shapes at different levels of misfit are computed. A cuboidal equilibrium shape is retrieved in a rotated mesh in order to quantify mesh-independence, a linear volume-time relationship during Ostwald ripening is reproduced and merging of particles under tension is reported.</p>