| 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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Legarth, Brian Nyvang
Technical University of Denmark
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (30/30 displayed)
- 2024Particle-matrix debonding with Strength-Differential effects
- 2024Temperature-dependent changes in thermoplastic sandwich core properties and failure mechanisms using four-point tests with short specimens
- 2024Mode-III fracture toughness measurements of foam-cored sandwich composites using a constrained Shear-Torsion-Bending specimen
- 2022A Modified Shear Torsion Bending Test for Mode-III Fracture Toughness Measurements of Face/Core Interfaces in Sandwich Composites
- 2022A special finite element method applied to off-axis tunnel cracking in laminatescitations
- 2022An efficient stiffness degradation model for layered composites with arbitrarily oriented tunneling and delamination crackscitations
- 2021Introduction to the finite element solid formulation
- 2021A novel test fixture for mode III fracture characterization of monolithic laminates and composite sandwich specimenscitations
- 2021Approach for analysing off-axis tunnelling cracks in biaxially loaded laminatescitations
- 2019Development of a Mode III Test Rig for Composite Laminates and Sandwich Face/Core Fracture Characterization
- 2015Plasticity dependent damage evolution in composites with strain-gradient effectscitations
- 2015Effect of fiber positioning on mixed-mode fracture of interfacial debonding in compositescitations
- 2015Effect of fiber positioning on mixed-mode fracture of interfacial debonding in compositescitations
- 2014A numerical study of the influence of microvoids in the transverse mechanical response of unidirectional compositescitations
- 2014A numerical study of the influence of microvoids in the transverse mechanical response of unidirectional compositescitations
- 2014A numerical study of the influence of microvoids in the transverse mechanical response of unidirectional compositescitations
- 2014On the homogenization of metal matrix composites using strain gradient plasticitycitations
- 2013Experimental and numerical study of the micro-mechanical failure in composites
- 2013Experimental and numerical study of the micro-mechanical failure in composites
- 2013A deformation mechanism map for polycrystals modeled using strain gradient plasticity and interfaces that slide and separatecitations
- 2013Micromechanical modeling of unidirectional composites with uneven interfacial strengthscitations
- 2013Micromechanical modeling of unidirectional composites with uneven interfacial strengthscitations
- 2013A new macroscopically anisotropic pressure dependent yield function for metal matrix composite based on strain gradient plasticity for the microstructurecitations
- 2013Fracture of anisotropic materials with plastic strain-gradient effects
- 2012Debonding analyses in anisotropic materials with strain- gradient effects
- 2012Debonding Analyses in Anisotropic Materials with Strain-Gradient Effects
- 2011Size-effects on yield surfaces for micro reinforced compositescitations
- 2010Debonding failure and size effects in micro reinforced compositescitations
- 2005Effects of geometrical anisotropy on failure in a plastically anisotropic metal
- 2004Particle debonding using different yield criteriacitations
Places of action
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article
Size-effects on yield surfaces for micro reinforced composites
Abstract
Size effects in heterogeneous materials are studied using a rate independent higher order strain gradient plasticity theory, where strain gradient effects are incorporated in the free energy of the material. Numerical studies are carried out using a finite element method, where the components of the plastic strain tensor appear as free variables in addition to the displacement variables. Non-conventional boundary conditions are applied at material interfaces to model a constraint on plastic flow due to dislocation blocking. Unit cell calculations are carried out under generalized plane strain conditions. The homogenized response of a material with cylindrical reinforcing fibers is analyzed for different values of the internal material length scale and homogenized yield surfaces are presented. While the main focus is on initial yield surfaces, subsequent yield surfaces are also presented. The center of the yield surface is tracked under uniaxial loading both in the transverse and longitudinal directions and an anisotropic Bauschinger effect is shown to depend on the size of the fibers. Results are compared to conventional predictions, and size-effects on the kinematic hardening are accentuated.