Prediction of ductile fracture initiation using micromechanical analysis
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2004
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In the paper ductile fracture initiation analysis of low-alloyed ferritic steel has been made by application of two micromechanical models: the Rice-Tracey void growth model and the Gurson-Tvergaard-Needleman (GTN) model. The aim of the study was to analyse transferability of micromechanical parameters determined on specimens without initial crack to pre-cracked specimens. A significant part of the research has been carried out through participation in the round robin project organised by the European Structural Integrity Society (ESIS). Tensile tests have been performed on cylindrical smooth specimens and CT specimens. Critical values of micromechanical parameters determined on smooth specimen for both applied models, have been used for prediction of the crack growth initiation in CT specimen. Modelling of the first phase of ductile fracture-void nucleation-has been carried out using quantitative metallographic analysis of non-metallic inclusion content in tested steel. For determinat...ion of critical values of model parameters corresponding to ductile fracture initiation a simple procedure has been applied based on a combination of experimental and numerical results. Evaluated J-integral values corresponding to onset of crack growth, J(i), are in good agreement with experimental result and both models have proved to be suitable for determination of the ductile fracture initiation in tested steel. The effect of FE size at a crack tip on J(i)-value has been particularly analysed: it has been established that the calculation with FE size corresponding to the mean free path), between inclusions in steel gives results that are in accordance with the experimental ones.
Ključne reči:
ductile fracture initiation / micromechanical modelling / void growth ratio / void volume fraction / non-metallic inclusions / finite element methodIzvor:
Engineering Fracture Mechanics, 2004, 71, 4-6, 813-827Izdavač:
- Pergamon-Elsevier Science Ltd, Oxford
DOI: 10.1016/S0013-7944(03)00013-4
ISSN: 0013-7944
WoS: 000188122500032
Scopus: 2-s2.0-0344287082
Institucija/grupa
Tehnološko-metalurški fakultetTY - JOUR AU - Rakin, Marko AU - Cvijović, Zorica AU - Grabulov, Vencislav AU - Putić, Slaviša AU - Sedmak, Aleksandar PY - 2004 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/614 AB - In the paper ductile fracture initiation analysis of low-alloyed ferritic steel has been made by application of two micromechanical models: the Rice-Tracey void growth model and the Gurson-Tvergaard-Needleman (GTN) model. The aim of the study was to analyse transferability of micromechanical parameters determined on specimens without initial crack to pre-cracked specimens. A significant part of the research has been carried out through participation in the round robin project organised by the European Structural Integrity Society (ESIS). Tensile tests have been performed on cylindrical smooth specimens and CT specimens. Critical values of micromechanical parameters determined on smooth specimen for both applied models, have been used for prediction of the crack growth initiation in CT specimen. Modelling of the first phase of ductile fracture-void nucleation-has been carried out using quantitative metallographic analysis of non-metallic inclusion content in tested steel. For determination of critical values of model parameters corresponding to ductile fracture initiation a simple procedure has been applied based on a combination of experimental and numerical results. Evaluated J-integral values corresponding to onset of crack growth, J(i), are in good agreement with experimental result and both models have proved to be suitable for determination of the ductile fracture initiation in tested steel. The effect of FE size at a crack tip on J(i)-value has been particularly analysed: it has been established that the calculation with FE size corresponding to the mean free path), between inclusions in steel gives results that are in accordance with the experimental ones. PB - Pergamon-Elsevier Science Ltd, Oxford T2 - Engineering Fracture Mechanics T1 - Prediction of ductile fracture initiation using micromechanical analysis EP - 827 IS - 4-6 SP - 813 VL - 71 DO - 10.1016/S0013-7944(03)00013-4 ER -
@article{ author = "Rakin, Marko and Cvijović, Zorica and Grabulov, Vencislav and Putić, Slaviša and Sedmak, Aleksandar", year = "2004", abstract = "In the paper ductile fracture initiation analysis of low-alloyed ferritic steel has been made by application of two micromechanical models: the Rice-Tracey void growth model and the Gurson-Tvergaard-Needleman (GTN) model. The aim of the study was to analyse transferability of micromechanical parameters determined on specimens without initial crack to pre-cracked specimens. A significant part of the research has been carried out through participation in the round robin project organised by the European Structural Integrity Society (ESIS). Tensile tests have been performed on cylindrical smooth specimens and CT specimens. Critical values of micromechanical parameters determined on smooth specimen for both applied models, have been used for prediction of the crack growth initiation in CT specimen. Modelling of the first phase of ductile fracture-void nucleation-has been carried out using quantitative metallographic analysis of non-metallic inclusion content in tested steel. For determination of critical values of model parameters corresponding to ductile fracture initiation a simple procedure has been applied based on a combination of experimental and numerical results. Evaluated J-integral values corresponding to onset of crack growth, J(i), are in good agreement with experimental result and both models have proved to be suitable for determination of the ductile fracture initiation in tested steel. The effect of FE size at a crack tip on J(i)-value has been particularly analysed: it has been established that the calculation with FE size corresponding to the mean free path), between inclusions in steel gives results that are in accordance with the experimental ones.", publisher = "Pergamon-Elsevier Science Ltd, Oxford", journal = "Engineering Fracture Mechanics", title = "Prediction of ductile fracture initiation using micromechanical analysis", pages = "827-813", number = "4-6", volume = "71", doi = "10.1016/S0013-7944(03)00013-4" }
Rakin, M., Cvijović, Z., Grabulov, V., Putić, S.,& Sedmak, A.. (2004). Prediction of ductile fracture initiation using micromechanical analysis. in Engineering Fracture Mechanics Pergamon-Elsevier Science Ltd, Oxford., 71(4-6), 813-827. https://doi.org/10.1016/S0013-7944(03)00013-4
Rakin M, Cvijović Z, Grabulov V, Putić S, Sedmak A. Prediction of ductile fracture initiation using micromechanical analysis. in Engineering Fracture Mechanics. 2004;71(4-6):813-827. doi:10.1016/S0013-7944(03)00013-4 .
Rakin, Marko, Cvijović, Zorica, Grabulov, Vencislav, Putić, Slaviša, Sedmak, Aleksandar, "Prediction of ductile fracture initiation using micromechanical analysis" in Engineering Fracture Mechanics, 71, no. 4-6 (2004):813-827, https://doi.org/10.1016/S0013-7944(03)00013-4 . .