Ductile tearing analyses of cracked TP304 pipes using the multiaxial fracture strain energy model and the Gurson–Tvergaard–Needleman model

Wang, Tao; Wen, Jian Feng; Kim, Yun Jae; Tu, S.T.

doi:10.1111/ffe.13311

Cited by 13 publications

(6 citation statements)

References 35 publications

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“…Therefore, this model can better reflect the microstructure of material than the other damage models. Meanwhile, the GTN model has an advantage of being simple for implementation in standard FE codes and has been widely used in ductile damage community 29–31 . The following is a detailed introduction about the model.…”

Section: Modeling Of Damage On Multi‐pass Drawing For Wire With V‐sha...mentioning

confidence: 99%

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Damage and fracture analyses of wire with V‐shaped microcrack on multi‐pass drawing under back tensions

Zhang

Dong

et al. 2022

Fatigue Fract Eng Mat Struct

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Wire breakage has always attracted much attention in drawing. Mastering the mechanism of drawing fracture can effectively improve the quality of steel wire. In this study, the morphology of the fracture samples is analyzed. There are obvious V-shaped microcracks in the materials by observing the microstructure. Base on the above results, the wire models with V-shaped microcrack of different inclinations are established via the finite element method (FEM). Besides, the multi-pass drawing under different back tension is simulated, and the process from crack propagation caused by damage to fracture is realized. The results show that microcrack has a great influence on the drawing fracture, and inclination is a key factor. With the increase of angle, the propagation rate of crack increases accordingly. Meanwhile, back tension will increase the accumulation of damage. The larger the back tension is, the larger the crack path is, which eventually leads to the formation of pen-tip shaped fracture.

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Section: Modeling Of Damage On Multi‐pass Drawing For Wire With V‐sha...mentioning

confidence: 99%

“…Meanwhile, the GTN model has an advantage of being simple for implementation in standard FE codes and has been widely used in ductile damage community. [29][30][31] The following is a detailed introduction about the model. The plastic potential of ductile failure predicted is expressed as follows 32 :…”

Section: Numerical Model and Validationmentioning

confidence: 99%

Damage and fracture analyses of wire with V‐shaped microcrack on multi‐pass drawing under back tensions

Zhang

Dong

et al. 2022

Fatigue Fract Eng Mat Struct

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“…The matrix material of drawing wire except for inclusions is regarded as a plastic damage material with micro-holes. That is because there are a large number of micro-holes 32,33 in the steel wire blank, and the wire drawing is a plastic flow forming process.…”

Section: Simplified Physical Model Of Wire Drawing With Inclusionmentioning

confidence: 99%

“…Because simulation purpose is the damage and fracture of steel wire (matrix) material, the secondary factor inelastic deformation of inclusions is ignored. The matrix material of drawing wire except for inclusions is regarded as a plastic damage material with micro‐holes. That is because there are a large number of micro‐holes 32,33 in the steel wire blank, and the wire drawing is a plastic flow forming process.…”

Section: Numerical Modelling Of Wire Drawing With Inclusionmentioning

confidence: 99%

Numerical analyses of damage behavior of wire with inclusion in multipass drawing process

Jia-xing

Wei

et al. 2021

Fatigue Fract Eng Mat Struct

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Inclusion is one of the main causes for unqualified wire. However, the forming mechanism of drawing fracture due to inclusions is still unclear. Therefore, it is significant to figure out the forming mechanism of wire drawing fracture with inclusions for designing and manufacturing high‐quality wires. In this paper, a physical model of wire with inclusion is established based on experimental observations. Multipass drawing is simulated by using finite element method (FEM) with the developed numerical damage modeling. Numerical results demonstrate that the damage increases with the development of drawing progress, and the damage caused by high elastic modulus of inclusion is greater than that of low elastic modulus. Pen‐tip shaped fracture of wire with inclusions is mainly caused by the superposition of core and external V‐shaped damage. Furthermore, the core V‐shaped crack will propagate along the external V‐shaped damage area.

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“…After the modifications to Gurson's constitutive equations, the model is called as "GTN model" and enabled to predict ductile damage in metals. Researchers have carried out numerous studies to model ductile fracture for different applications, including tensile testing, [10][11][12][13][14][15] formability limit diagrams, [16][17][18][19][20] small punch tests, [21][22][23] electromagnetic impaction, [24] Charpy V-notch test, [25,26] bending, [27][28][29] tube hydroforming, [30,31] roll forming. [32] The constitutive equations of the GTN damage model require nine different parameters.…”

mentioning

confidence: 99%

Numerical Analysis of the Damage Evolution of DP600 Steel Using Gurson–Tvergaard–Needleman Model

Yildiz

2022

steel research int.

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Ductile fracture is commonly considered as a mechanical response of nucleation, growth, and finally, coalescence of voids in metallic alloys induced by plastic deformation. Several micromechanical ductile fracture models and criteria have been developed within the past 50 years. In 1968, McClintock [1] established ductile fracture criteria for the growth of long cylindrical void under applied stress. Next year, Rice and Tracey [2] analytically modeled the growth of spherical voids in a tension strain field. In both cases, high-stress triaxiality increases the void growth rate exponentially. Later, Gurson [3] developed constitutive equations for porous materials using the upper bound theorem of plasticity. Gurson's yield criteria was based on the assumption of idealization of a single void in a rigid plastic cell (to represent matrix) in which the void volume fraction was defined as "f ". Similarly, Rousselier [4] proposed a macroscopic approach to predict ductile damage using the continuum thermodynamics. Also, Lemaitre [5] put forth a model for ductile fracture in the framework of thermodynamics: effective elasticity modulus, which decreases with an increase in the damage.Chu and Needleman [6] published a void nucleation model employing Gurson's yield criteria. Next, Tvergaard [7,8] conducted a bifurcation analysis on the shear band instabilities and void coalescence in localized shear bands in a continuum model with a void-matrix aggregate proposed by Gurson. Later, Tvergaard and Needleman [9] carried out a finite element analysis for the coalescence of voids and introduced a modification to the yield condition. After the modifications to Gurson's constitutive equations, the model is called as "GTN model" and enabled to predict ductile damage in metals. Researchers have carried out numerous studies to model ductile fracture for different applications, including tensile testing, [10][11][12][13][14][15] formability limit diagrams, [16][17][18][19][20] small punch tests, [21][22][23] electromagnetic impaction, [24] Charpy V-notch test, [25,26] bending, [27][28][29] tube hydroforming, [30,31] roll forming. [32] The constitutive equations of the GTN damage model require nine different parameters. In the literature, scholars determined these parameters with different methods for various materials. Ali and Huang [33] utilized a statistical approach, response surface methodology (RSM), to estimate damage for AZ61 Mg alloy. They coupled a finite element model (FEM), which is developed in ANSYS and evaluated the response of each variable on the regression model coefficients. Their approximation algorithm compared the results of each increment with the experimentally obtained tensile test results that initially start with the literature values for different materials, including steel, titanium, and aluminum alloys. Similarly, Abbasi and colleagues [34] determined GTN model parameters by RSM for the tailor-welded monolithic interstitial free (IF)-steel blanks. They compared the results of FEM, which was constructed on the...

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Ductile tearing analyses of cracked TP304 pipes using the multiaxial fracture strain energy model and the Gurson–Tvergaard–Needleman model

Cited by 13 publications

References 35 publications

Damage and fracture analyses of wire with V‐shaped microcrack on multi‐pass drawing under back tensions

Damage and fracture analyses of wire with V‐shaped microcrack on multi‐pass drawing under back tensions

Numerical analyses of damage behavior of wire with inclusion in multipass drawing process

Numerical Analysis of the Damage Evolution of DP600 Steel Using Gurson–Tvergaard–Needleman Model

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