| 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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Poulios, Konstantinos
Technical University of Denmark
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (21/21 displayed)
- 2024Adding friction to Third Medium Contact:A crystal plasticity inspired approachcitations
- 2024Adding friction to Third Medium Contact: A crystal plasticity inspired approachcitations
- 2024Finite Element Predictions of In-Situ 3D X-Ray CT Determined Compression Failure of Uni-Directional Composites
- 2023Holistic computational design within additive manufacturing through topology optimization combined with multiphysics multi-scale materials and process modellingcitations
- 2023Inverse design of mechanical springs with tailored nonlinear elastic response utilizing internal contactcitations
- 2022Uniaxial tensile behaviour of additively manufactured elastically isotropic truss lattices made of 316Lcitations
- 2022Rapid Screening of the Mechanical Properties of 13 wt%Cr Steels with Uncharted Combinations of C and N Contentscitations
- 2022Anisotropic yield surfaces of additively manufactured metals simulated with crystal plasticitycitations
- 2022On the effect of microplasticity on crack initiation from subsurface defects in rolling contact fatiguecitations
- 2021Targeted heat treatment of additively manufactured Ti-6Al-4V for controlled formation of Bi-lamellar microstructurescitations
- 2021Targeted heat treatment of additively manufactured Ti-6Al-4V for controlled formation of Bi-lamellar microstructurescitations
- 2021Anisotropic tensile behaviour of additively manufactured Ti-6Al-4V simulated with crystal plasticitycitations
- 2021Finite element study of cyclic plasticity near a subsurface inclusion under rolling contact and macro-residual stressescitations
- 2020Effect of superimposed compressive stresses on rolling contact fatigue initiation at hard and soft inclusionscitations
- 2019Determination of optimal residual stress profiles for improved rolling contact fatigue resistancecitations
- 2018A homogenization method for ductile-brittle composite laminates at large deformationscitations
- 2016Homogenization of long fiber reinforced composites including fiber bending effectscitations
- 2015Accounting for Fiber Bending Effects in Homogenization of Long Fiber Reinforced Composites
- 2014Uncertainty of pin height measurement for the determination of wear in pin-on-plate testcitations
- 2013Coefficient of Friction Measurements for Thermoplastics and Fibre Composites Under Low Sliding Velocity and High Pressurecitations
- 2012Coefficient of Friction Measurements for Thermoplastics and Fiber Composites under Low Sliding Velocity and High Pressure
Places of action
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article
On the effect of microplasticity on crack initiation from subsurface defects in rolling contact fatigue
Abstract
This work demonstrates numerically how microplasticity, i.e. the yielding behavior below the conventional 0.2% plastic strain threshold, can lead to initiation of cracks at subsurface defects, in rolling contact applications operating under realistic loads. A 3D elasto-plastic finite element model is employed to perform shakedown analysis of the bearing steel around a small spherical void with two different approximations of the steel constitutive behavior at the plastic micro-strain regime. When non-linear kinematic hardening is used to model a fast but smooth onset of plasticity, the fields of plastic strains and micro-residual stresses around the void evolve very distinctly to the case where a sharp transition is assumed. To further investigate the role of the tensile micro-residual stresses occurring in the former case on crack initiation, a planar circular crack is inserted at the equator of the void and an entire overrolling cycle is investigated by means of linear elastic fracture mechanics (LEFM). This analysis is repeated for different crack sizes and the respective stress intensity factors and their amplitudes, relevant for crack growth, are reported. The work also reports implementation details for the coupling of a 3D elasto-plastic model for shakedown analysis to a subsequent LEFM analysis model.