Experiments and numerical approaches to ductile tearing in an 2024-T351 aluminium alloy

Imad, A.; Wilsius, Joël; Naït-Abdelaziz, Moussa; Mesmacque, G.

doi:10.1016/j.ijmecsci.2003.12.006

Cited by 16 publications

(5 citation statements)

References 14 publications

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“…(3) and (4), s i , i¼I, II, III are the principal stresses ordered so that s I Zs II Zs III . The Rice-Tracey criterion is widely used in prediction of ductile fracture, see e.g., [3,[13][14]. It is then common to assume that fracture (or void coalescence) initiates as the void growth ratio R/R 0 reaches a critical value (R/R 0 ) C , where R 0 is the initial void radius.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of uncoupled ductile fracture criteria for the dual-phase steel Docol 600DL

Gruben

Hopperstad

2012

International Journal of Mechanical Sciences

109

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Section: Introductionmentioning

confidence: 99%

Evaluation of uncoupled ductile fracture criteria for the dual-phase steel Docol 600DL

Gruben

Hopperstad

2012

International Journal of Mechanical Sciences

109

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“…Prior to theory derivation, it was widely acknowledged that only tensile failure occurs in the pre-crack under hydraulic fracturing, which is a classic type I fracture [ 47 ]. According to the infinite thin panel theory of fracture mechanics, the equation for the type I fracture stress intensity factor for the crack of length a is [ 48 ]:

where σ y is the stress in the y-direction.…”

Section: Calculation Model For Hydraulic Fracturing Reopening Pressurementioning

confidence: 99%

An Innovative Method to Analyze the Hydraulic Fracture Reopening Pressure of Hot Dry Rock

et al. 2023

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This paper focuses on a new test method and theoretical model for measuring and evaluating the reopening pressure during hot dry rock hydraulic fracturing. Firstly, rock blocks of four lithologies were collected from the hot dry rock strata. Hydraulic fracturing tests at high temperatures in real-time were conducted using drilled cubic specimens and drilled cubic specimens with a pre-crack. Breakdown pressure, reopening pressure, and fracture toughness were measured, respectively. In addition, Brazilian splitting tests at high temperatures in real-time were performed using Brazilian disc specimens to measure tensile strength. Secondly, an empirical equation for evaluating the reopening pressure during hot dry rock secondary fracturing was developed based on fracture mechanics and hydraulic fracturing theory. Third, the values calculated by the new equation, considering breakdown pressure, fracture toughness, and tensile strength, were compared to the values determined by the classical equation and to measurement results. It was found that the new equation predicted closer reopening pressure to the measurement results, regardless of the lithology of the hot dry rock. Moreover, with increasing temperature in the specimens, the error between the value calculated by the new equation and the measurement value remained low. In contrast, the difference between the classical equation predictions and the measurement results was widened. In addition, the reopening pressure was positively correlated with tensile strength and fracture toughness. Variations in lithology and temperature affected tensile strength and fracture toughness, which then changed the hot dry rock reopening pressure.

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“…The results of investigation of mechanical damage of 5754-H111 aluminum alloy has indicated that damage and fracture are mostly results of nucleating, growing and coalescing of micro cavities or micro voids. In order to predict the ductile fracture process, several theoretical models using local approaches have been presented in the literature (Betegon et al, 1997;Corigliano et al, 2000;Imad et al, 2003;Achouri et al, 2012). So, the selection of an adapted micromechanical model allows understanding of the fracture mechanism of 5457-H111 aluminum alloy.…”

Section: Introductionmentioning

confidence: 99%

Study of the influence of cold working on mechanical behavior and ductile fracture of 5754 aluminum alloy: experimental and numerical simulations

Taktak

Taktak²,

Haddar³

et al. 2017

jtam

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The ductile damage of automotive aluminum sheet alloy AA5754-H111 is investigated by experiments and numerical simulation using the Gurson-Tvergaard-Needleman (GTN) model. The GTN parameters were determined by a uni-axial tensile test and the inverse finite element method. The same parameters were employed to provide the ductile damage behavior of central cracked panel (CCP) specimens. A good prediction can be established among the numerical simulation and experimental data in from of the force opening displacement. As an application, the identified GTN model is used to predict the influence of cold working on deformation and ductile damage. The numerical simulation results obtained are assimilated with experimental data.

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Experiments and numerical approaches to ductile tearing in an 2024-T351 aluminium alloy

Cited by 16 publications

References 14 publications

Evaluation of uncoupled ductile fracture criteria for the dual-phase steel Docol 600DL

Evaluation of uncoupled ductile fracture criteria for the dual-phase steel Docol 600DL

An Innovative Method to Analyze the Hydraulic Fracture Reopening Pressure of Hot Dry Rock

Study of the influence of cold working on mechanical behavior and ductile fracture of 5754 aluminum alloy: experimental and numerical simulations

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