Implementation and Application of Dung’s Model to Analyze Ductile Fracture of Metallic Material

Nguyen, Hao H.; Nguyen, Trung Ngoc; Vu, Cong Hoa

doi:10.1007/978-3-319-27247-4_75

Cited by 2 publications

(1 citation statement)

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“…Based on the numerical algorithm of Aravas [13], the Dung's porous ductile model is implemented by a vectorized user-defined subroutine (VUMAT) and conjugated with finite element code of ABAQUS/Explicit software. The implemented procedure for Dung's model has been completed by Hao et al [14].…”

Section: Numerical Implementationmentioning

confidence: 99%

Forming limit curve determination of AA6061-T6 aluminum alloy sheet

Nguyen

2017

Sci. Tech. Dev. J.

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The forming limit curve (FLC) is used in sheet metal forming analysis to determine the critical strain or stress values at which the sheet metal is failing when it is under the plastic deformation process, e.g. deep drawing process. In this paper, the FLC of the AA6061-T6 aluminum alloy sheet is predicted by using a micro-mechanistic constitutive model. The proposed constitutive model is implemented via a vectorized user-defined material subroutine (VUMAT) and integrated with finite element code in ABAQUS/Explicit software. The mechanical behavior of AA6061-T6 sheet is determined by the tensile tests. The material parameters of damage model are identified based on semi-experience method. To archive the various strain states, the numerical simulation is conducted for the Nakajima test and then the inverse parabolic fit technique that based on ISO 124004-2:2008 standrad is used to extracted the limit strain values. The numerical results are compared with the those of MK, Hill and Swift analytical models.

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Section: Numerical Implementationmentioning

confidence: 99%