Experimental and numerical investigation on ductile fracture mechanism of aluminium alloy using new modified model

In the present paper, the ductile fracture of aluminium alloy 5052P-H34 is studied by experiments and simulations. Then, the extension of the damage growth model, which captures both tension as well as shear, was employed in the present paper, and a modified Rousselier model was proposed. A stress i...

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Vydáno v:Materials science and technology Ročník 31; číslo 3; s. 303 - 309
Hlavní autoři: Zhao, R., Zhao, S., Guo, J., Zhong, B., Li, J.
Médium: Journal Article
Jazyk:angličtina
Vydáno: London, England Taylor & Francis 01.02.2015
SAGE Publications
Taylor & Francis Ltd
Témata:
Algorithms
Aluminium alloy
Aluminum alloys
Aluminum base alloys
Calibration
Computer simulation
Ductile fracture
Finite element analysis
Finite element method
Fractures
Materials science
Mathematical models
Rousselier model
Shear
Simulation
Ductile fracture
Aluminium alloy
Finite element analysis
Rousselier model
ISSN:0267-0836, 1743-2847
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Shrnutí:In the present paper, the ductile fracture of aluminium alloy 5052P-H34 is studied by experiments and simulations. Then, the extension of the damage growth model, which captures both tension as well as shear, was employed in the present paper, and a modified Rousselier model was proposed. A stress integration algorithm based on the general backward Euler return algorithm was developed and implemented into finite element (FE) models in the ABAQUS/Explicit platform. The shear coefficient was calibrated by a FE analysis based on an inverse calibration procedure combined with the physical experiments. The predictive capability of this model was studied by comparing the experiments with the simulations, and the validity of this model was verified. The results show that the modified Rousselier model can give more accurate results for both tension and shear failure.
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ISSN:0267-0836
1743-2847
DOI:10.1179/1743284714Y.0000000519