Three-dimensional void growth in plastic materials

Dung, N. L.

doi:10.1016/0093-6413(92)90070-q

Cited by 17 publications

(9 citation statements)

References 7 publications

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“…A cylindrical micro-void growth in rigid-plastic material based ductile fracture criterion was proposed by McClintock [5]. Dung [7] has modified the McClintock model for the ellipsoidal and cylindrical void growth in hardening matrix material under the remoted stress field and has proposed a constitutive model for porous ductile material. Employing a ductile fracture model to predict FLC is widely applied because it is considered as an effective remedy for saving more time than that of the experiment [3,8].…”

Section: Introductionmentioning

confidence: 99%

“…In this study, we use a Dung's porous ductile material model [7], conjugated with the Hill'48 quadratic yield function to predict the FLC of AA6061-T6 aluminum alloy. The ductile fracture model is implemented by a vectorized user-defined material subroutine (VUMAT) in ABAQUS/Explicit software package.…”

Section: Introductionmentioning

confidence: 99%

“…Gurson [11] has been introduced a yield function based on mechanism of void nucleation, growth and coalescences in matrix material. Based on McClintock's void growth model [5], Dung [7] proposed not only a yield function that similar to Gurson-Tvergaard-Needleman (GTN) model [12] but also addition of a explicitly hardening parameter n to consider hardening effects of matrix material under deformation as follow:…”

Section: Introductionmentioning

confidence: 99%

“…The sheet metal is usually showing an anisotropy so that the von Mises equivalent stress function in the original Dung's model[7] is replaced by the Hill48 quadratic criterion[9].…”

mentioning

confidence: 99%

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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: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…The sheet metal is usually showing an anisotropy so that the von Mises equivalent stress function in the original Dung's model[7] is replaced by the Hill48 quadratic criterion[9].…”

mentioning

confidence: 99%

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Forming limit curve determination of AA6061-T6 aluminum alloy sheet

Nguyen

2017

Sci. Tech. Dev. J.

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“…Hom and McMeeking [8] and Worswick and Pick [9] carried out three-dimensional finite element computations for the growth of initially spherical voids in a periodic cubic array. Recently Dung [10] modified the McCIintock model to investigate three-dimensional growth of ellipsoidal voids in a plastic material.…”

Section: Introductionmentioning

confidence: 99%

A numerical study of ductile void growth under dynamic loading conditions

et al. 1995

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A numerical study of void growth at differing global strain rates in the range 149s -~ -2240s -1 and at start temperatures between 173K and 573K has been carded out for a material containing a threedimensional periodic array of equally spaced, initially spherical voids. To take account of the effect of strain rate and temperature on the flow stress under dynamic adiabatic conditions, the well-established Zerilli-Armstrong constitutive relations for pure copper and iron have been employed. An instability criterion based on the maximum mean tensile stress has been used to identify the point at which unstable void growth occurs. For both materials, the strain at instability has been found to be dependent on stress triaxiality and start temperature but only weakly affected by strain-rate.

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Void Growth Based Damage Model for the Anisotropic Material

Nguyen

2022

Computational Intelligence Methods for Green Technology and Sustainable Development

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Three-dimensional void growth in plastic materials

Cited by 17 publications

References 7 publications

Forming limit curve determination of AA6061-T6 aluminum alloy sheet

Forming limit curve determination of AA6061-T6 aluminum alloy sheet

A numerical study of ductile void growth under dynamic loading conditions

Void Growth Based Damage Model for the Anisotropic Material

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