A New Computational Method for Predicting Ductile Failure of 304L Stainless Steel

Kim, Myung-Sung; Kim, Hee-Tae; Choi, Young-Hwan; Kim, Jeong‐Hyeon; Kim, Seul-Kee; Lee, Jae-Myung

doi:10.3390/met12081309

Cited by 15 publications

(10 citation statements)

References 54 publications

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“…Over the past two decades, it has been shown that stress triaxiality alone cannot explain the reduction in ductility observed for some classes of materials when subjected to shear-dominated stress states. Such behavior has been reported for aluminum alloys [4,5], Ti-6Al-4V [6], Weldox [7], and 304L steel [8]. This evidence motivated several studies in considering the third deviatoric stress invariant effect in plasticity [9][10][11][12] and damage model [13][14][15][16][17] formulations.…”

Section: Introductionmentioning

confidence: 57%

modelling ductile fracture in third stress invariant sensitive materials: application to al2024-T351

Bonora

Testa

Ricci

et al. 2022

Preprint

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Triaxiality alone is not sufficient to account for the role of stress state on ductility in materials that exhibit shear effects on fracture strain. For these materials, it has been proposed that ductility also depends on the third invariant of the stress deviator. Recently, Bonora and Testa [N. Bonora, G. Testa, Plasticity damage self-consistent model incorporating stress triaxiality and shear-controlled fracture mechanisms – model formulation, Eng. Frac. Mech. 271, 108634 (2022).] derived a plasticity damage self-consistent (PDSC) model considering damage contributions due to intervoid necking, shearing, and sheeting for an arbitrary stress state. In this work, the PDSC model has been applied to Al2024-T351 considering the experimental results reported in the literature obtained on several different sample geometries and material batches. The ability of the model to predict the transition from cup-cone to slant fracture for different stress states is shown. In addition, the possibility to predict ductile fracture in the negative stress triaxiality range has been also demonstrated showing that it can occur for stress triaxiality even much less than -0.5 as long as there is a dominant shear deformation state.

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Section: Introductionmentioning

confidence: 57%

modelling ductile fracture in third stress invariant sensitive materials: application to al2024-T351

Bonora

Testa

Ricci

et al. 2022

Preprint

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“…However, coupling can complicate the model in some cases, making its numerical implementation challenging. Kim et al (2022) employed Swift-Voce hardening equation coupled with MMC fracture criterion to characterize the non-linear response beyond the ultimate tensile strength of 304L stainless steel.…”

Section: Introductionmentioning

confidence: 99%

Assessing the ductile fracture characteristics of CuZn30 brass under various stress conditions

Ganjiani,

Ghobadi

2024

Preprint

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This paper focuses on the investigation of ductile fracture in CuZn30 brass under various stress triaxialities and Lode angles. To achieve this, five distinct specimen geometries were fabricated, including dog-bone, notched, two types of in-plane shear, and deep drawing specimens. Every specimen was subjected to testing in three orientations: rolling, diagonal, and transverse, with the aim of investigating the potential presence of anisotropic properties in plastic deformation. A non-linear damage parameter was incorporated into the constitutive equations in two forms: coupled and uncoupled from the hardening law. It is assumed that damage progresses as the Ganjiani ductile fracture model, used as a damage initiation criterion, is established. The von-Mises yield criterion characterizes the plastic behavior of the material. In order to authenticate the experimental results, a combination of experimental and numerical simulations was carried out. In this context, all tests were simulated using ABAQUS/Standard through the implementation of USDFLD and UHARD codes. The outcomes of the simulation demonstrated good concordance with the results obtained through experiment, particularly in terms of force and the softening (necking) zone for all specimen types. It was also observed that when damage is considered as a coupled parameter to the hardening law, the softening (necking) phenomenon could be effectively simulated.

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“…At present, the constitutive relations of materials established by macroscopic phenomenological method have been studied extensively in the world. Macroscopic phenomenological models include the Rice and Tracy fracture model [17], Bai-Wierzbicki model [18], DF series fracture criterion [19], JC (Johnson-Cook) fracture model [20], MC (Mohr-Coulomb fracture) model [21], MMC (Modified Mohr-Coulomb Model) fracture model [22], and DIEM (Damage Initiation and Evolution Model) fracture model [23]. JC, MMC, and DIEM are the most commonly used models of metal materials used in automotive engineering.…”

Section: Introductionmentioning

confidence: 99%

Study on Plastic Constitutive Relation and Ductile Fracture Criterion of AM60B Magnesium Alloy

Yang,

Jiang,

Gao

et al. 2024

Materials

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It is currently a challenge to accurately predict the deformation and fracture behavior of metal parts in automobile crashes. Many studies have shown that the deformation and fracture behavior of materials are significantly affected by the stress state during automobile crashes with complex stress state characteristics. In order to further promote the application of die-cast magnesium alloys in automobiles, it is particularly important to study the material deformation and fracture behavior of die-cast magnesium alloys. In this paper, the mechanical properties of the AM60B die-cast magnesium alloy sheet under four stress states (shear, tension, R10 notch tension, and cupping) were designed and tested. Based on the von Mises isotropic constitutive model and Swift weighted Hockett–Sherby hardening model, the plastic constitutive model of die-cast magnesium alloy was established. Based on the plastic model and the fracture model (JC, MMC, and DIEM) considering the influence of three stress states, the deformation and fracture behavior of the AM60B die-cast magnesium alloy front-end members in three-point bending were predicted by experiments and finite element simulation. The experimental results show that the deformation mode and loading–displacement curve trend of the AM60B die-cast magnesium alloy front members are the same, the crack initiation point and crack initiation time are the same, and the crack shape is similar. The results show that the complex stress state constitutive model parameters and the DIEM fracture model obtained in this paper can accurately predict the deformation and fracture failure behavior of the AM60B die-cast magnesium alloy sheet.

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A New Computational Method for Predicting Ductile Failure of 304L Stainless Steel

Cited by 15 publications

References 54 publications

modelling ductile fracture in third stress invariant sensitive materials: application to al2024-T351

modelling ductile fracture in third stress invariant sensitive materials: application to al2024-T351

Assessing the ductile fracture characteristics of CuZn30 brass under various stress conditions

Study on Plastic Constitutive Relation and Ductile Fracture Criterion of AM60B Magnesium Alloy

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