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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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Seitl, Stanislav
Brno University of Technology
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (19/19 displayed)
- 2024COMPARISON OF FATIGUE CRACK PROPAGATION RATES IN HIGH STRENGTH STEEL S460, S690 & S960 UNDER STRESS RATIO R = 0.1
- 2024Comparison of crack growth rates of IPE beams made from stainless steel in three-point bending
- 2024Determination of the geometric parameters of the defects based on the tomographically obtained data and their influence on the fatigue behavior of the S960 with laser cladded protective layers
- 2023Fatigue crack propagation under corrosion of high-strength steelcitations
- 2023Comparison of crack propagation rates in selected structural components made from AISI 304 grades: Three-point bending testcitations
- 2022Determination of fatigue crack growth in the near-threshold regime using small-scale specimenscitations
- 2022Estimation of the Plastic Zone in Fatigue via Micro-Indentationcitations
- 2022Experimental and Numerical simulation of a Three Point Bending Test of a Stainless Steel Beam ; Experimentální a numerická simulace tříbodového ohybového testu nosníku z nerezové ocelicitations
- 2022Influence of the interphase between laser-cladded metal layer and steel substrate on the fatigue propagation of a short edge crackcitations
- 2021Comparison of fracture toughness values of normal and high strength concrete determined by three point bend and modified disk-shaped compact tension specimens
- 2021Estimation of the Plastic Zone in Fatigue via Micro-Indentationcitations
- 2021Experimental and Numerical simulation of a Three Point Bending Test of a Stainless Steel Beamcitations
- 2020Determining fracture energy parameters of concrete from the modified compact tension test ; Určování parametru lomové energie betonu z modifikované zkoušky excentrickým tahemcitations
- 2020Estimation of the crack propagation direction in a mixed-mode geometry via multi-parameter fracture criteria ; Odhad směru šíření trhliny pomocí víceparametrových lomových kritérií v geometrii zatížené kombinovaným módemcitations
- 2018Influence of the gripping fixture on the modified compact tension test results: evaluation of the experiments on cylindrical concrete specimens ; Vliv uchycení na výsledky modifikované zkoušky excentrickým tahem: vyhodnocení experimentů na válcových betonových tělesech
- 2016Self-compacting concrete, protecting steel reinforcement under cyclic load : evaluation of fatigue crack behaviorcitations
- 2015Determining fracture energy parameters of concrete from the modified compact tension testcitations
- 2013The influence of the epoxy interlayer on the assessment of failure conditions of push-out test specimens
- 2013Experimental study of the influence of the initial notch length in cubical concrete wedge-splitting test specimenscitations
Places of action
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article
Estimation of the crack propagation direction in a mixed-mode geometry via multi-parameter fracture criteria ; Odhad směru šíření trhliny pomocí víceparametrových lomových kritérií v geometrii zatížené kombinovaným módem
Abstract
The presented work introduces a numerical parametric study on the crack propagation direction under mixed-mode conditions (mode I + II). It is conducted for the geometry of an eccentric asymmetric four-point bending of a single edge notched beam specimen; various levels of mode-mixity are ensured by modifications in the crack length and crack eccentricity. The direction of crack propagation is estimated semi-analytically using both the maximum tangential stress criterion and the strain energy density criterion (implemented as a procedure within the used finite element computational code) as well as numerically (from verification reasons). Multi-parameter fracture mechanics is employed in the presented work for precise analytical evaluation of the stress field in the cracked specimen. This theory is based on description of the stress and deformation fields in the cracked body by means of their approximation using several initial terms of the Williams power series. Recent studies show that utilization of only first term of the series, which corresponds to the stress intensity factor (SIF), the single controlling parameter for the crack initiation and propagation assessment in brittle materials, is insufficient in many crack problems. It appears also in this study that the higher-order terms of the asymptotic crack-tip field are of great relevance for the conducted analysis, similarly to a number of other fracture phenomena (near-crack-tip stress field approximation, non-linear zone extent estimation, etc.). ; Prezentovaná práce představuje numerickou parametrickou studii směru šíření trhliny za podmínek kombinovaného namáhání (mód I + II). Je provedena na geometrii excentrického asymetrického čtyřbodového ohybu tělesa s jednostranným vrubem; přičemž jsou zajištěny různé úrovně kombinace zatěžovacích módů pomocí proměnné délky trhliny a její excentricity. Směr šíření trhliny je odhadnut jak semi-analyticky (pomocí kritéria maximálního tangenciálního napětí a kritéria hustoty deformační energie) tak numericky (z ...