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Artykuły w czasopismach na temat „Ductile fracture simulations”

Autor: Grafiati

Data publikacji: 26 października 2024

Data aktualizacji: 31 lipca 2025

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1

Liu, HS, and MW Fu. "Prediction and analysis of ductile fracture in sheet metal forming—Part I: A modified Ayada criterion." International Journal of Damage Mechanics 23, no. 8 (2014): 1189–210. http://dx.doi.org/10.1177/1056789514541559.

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A modified ductile fracture criterion is proposed based on the traditional Ayada criterion and coded into the finite element simulation platform of VUMAT/ABAQUS for prediction and analysis of ductile fracture in metal plastic strain processes. In this modified ductile fracture criterion, stress triaxiality is taken into account, and more importantly, the exponential effect of the equivalent plastic strain on the damage behavior, which is generally ignored in other ductile fracture criteria, is also considered. The material related constants in the modified ductile fracture criterion are determ

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2

Azizi, Muhammad Azim, Mohd Faiz Mohd Ridhuan, Mohd Zakiyuddin Mohd Zahari, Sharafiz Abdul Rahim, and Muhammad Amin Azman. "Peridynamic Model for Tensile Elongation and Fracture Simulations of Polymethyl Methacrylate Notched Specimens." Applied Mechanics and Materials 909 (September 28, 2022): 11–28. http://dx.doi.org/10.4028/p-2z0841.

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This paper presents the peridynamic (PD) numerical model for simulating a tensile test until total fracture for a brittle polymeric material namely polymethyl methacrylate (PMMA). U-notched and V-notched specimens were used to investigate the effect of the notches on the elongation and fracture of PMMA. The tensile elongation of PMMA exhibits nonlinearity with respect to the applied load, while the fracture occurs when the material stress has reached the ultimate tensile stress of the material. Similar elongation and fracture properties were applied on PD simulations. Two types of elongation e

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3

Dzioba, Ihor, and Sebastian Lipiec. "Fracture Mechanisms of S355 Steel—Experimental Research, FEM Simulation and SEM Observation." Materials 12, no. 23 (2019): 3959. http://dx.doi.org/10.3390/ma12233959.

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In this study, the fracture mechanisms of S355 ferritic steel were analyzed. In order to obtain different mechanisms of fracture (completely brittle, mixed brittle and ductile or completely ductile), tests were carried out over a temperature range of −120 to +20 °C. Our experimental research was supplemented with scanning electron microscopy (SEM) observations of the specimens’ fracture surfaces. Modeling and load simulations of specimens were performed using the finite element method (FEM) in the ABAQUS program, and accurate calibration of the true stress–strain material dependence was made.

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4

Banabic, Dorel, and Abdolvahed Kami. "Applications of the Gurson’s model in sheet metal forming." MATEC Web of Conferences 190 (2018): 01002. http://dx.doi.org/10.1051/matecconf/201819001002.

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Recent advances in the modelling of metals encompass modelling of metals structural inhomogeneity, damage, porosity, twinning/untwining and non-local and second order effects. This presentation is focused on modelling the void growth in ductile fractures. The growth and coalescence of microscopic voids are the main mechanisms in ductile fracture of bulk metallic parts. In sheet metals, ductile fracture is preceded by necking during which existing voids do not have significant growth. However, necking is highly sensitive to plastic flow direction which in turn is sensitive to the presence of vo

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5

Watanabe, Atsuo, Kunio Hayakawa, and Shinichiro Fujikawa. "An Anisotropic Damage Model for Prediction of Ductile Fracture during Cold-Forging." Metals 12, no. 11 (2022): 1823. http://dx.doi.org/10.3390/met12111823.

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Researchers have formulated equations of ductile fracture to simulate and predict defects in cold-forged parts, e.g., the Cockcroft–Latham criterion. However, these equations are not applicable to certain cases of fracture in forged products. This study formulates a new equation for predicting ductile fractures with better prediction accuracy than the convention by which the cost for trial-and-error design can be reduced. The equation is expressed as a second-rank symmetric tensor, which is the inner product of the stress and strain-increment tensors. The theoretical efficacy of the equation i

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6

Tong, Ying. "The Evaluation of Ductile Fracture Criteria (DFC) of 6061-T6 Aluminum Alloy." Applied Mechanics and Materials 44-47 (December 2010): 2837–41. http://dx.doi.org/10.4028/www.scientific.net/amm.44-47.2837.

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As one of the principal failures, ductile fracturing restricts metal forming process. Cockcroft-Latham fracture criterion is suited for tenacity fracture in bulk metal-forming simulation. An innovative approach involving physical compression experiments, numerical simulations and mathematic computations provides mutual support to evaluate ductile damage cumulating process and ductile fracture criteria (DFC). The results show that the maximum cumulated damage decreases with strain rate rising, and the incremental ratios, that is damage sensitive rate, vary uniformly during the upsetting process

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7

Matsuno, Takashi, Jin Eguchi, Yasuhiro Kunii, et al. "Derivation of Point Plot-based Ductile Fracture Loci through Assimilation of Finite Element Simulation and Individual Actual Punched Surface Profile." MATEC Web of Conferences 408 (2025): 02001. https://doi.org/10.1051/matecconf/202540802001.

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This study demonstrated the inverse identification of the ductile fracture locus (DFL), successfully reproducing the actual punched surface profiles of DP980 steels. The primary aim was to visualize the plastic strain and residual stress distribution in the observed punching surface cross-section. First, cracks were incorporated into finite element (FE) half-punching simulations, on the basis of preliminary observations of the actual crack propagation behavior, to replicate individual punched surface profiles. Notably, ductile fracture modeling was not employed during the initial FE simulation

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8

Simkins, D. C., and S. Li. "Meshfree simulations of thermo-mechanical ductile fracture." Computational Mechanics 38, no. 3 (2005): 235–49. http://dx.doi.org/10.1007/s00466-005-0744-8.

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9

Sun, Dong Zhi, Michael Krawiec, and Hariaokto Hooputra. "Characterization and Modelling of the Damage Behavior of Extruded Aluminum Profiles for Crash Simulations." Materials Science Forum 877 (November 2016): 674–79. http://dx.doi.org/10.4028/www.scientific.net/msf.877.674.

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The damage behavior of aluminum profiles depends strongly on the stress state. Many investigations have shown that both ductile and shear fracture have to be taken into account in damage analysis. Since fracture strains of aluminum profiles are relatively low, damage modelling has to be included in component simulations. However, it is an open question, which kind of damage model can be used for crash simulations and which tests should be performed in order to calibrate the model. An extruded aluminum profile with double chambers of AA6060-T79 was characterized under different stress triaxiali

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10

Meng, Xianbo, Zixi Jiao, Haiyan Zhu, et al. "Study of the Brittle–Ductile Characteristics and Fracture Propagation Laws of Ultra-Deep Tight Sandy Conglomerate Reservoirs." Processes 13, no. 6 (2025): 1880. https://doi.org/10.3390/pr13061880.

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Ultra-deep tight sandy conglomerate reservoirs in the Junggar Basin are characterized by vertically alternating lithologies that include mudstone, sandy conglomerate, and sandstone. High in situ stresses and formation temperatures contribute to a brittle–ductile transition process in the reservoir rocks. However, the brittle behavior and ductile hydraulic fracture propagation mechanisms under in situ conditions remain inadequately understood. In this study, ultra-deep core samples were subjected to triaxial compression tests under varying confining pressures and temperatures to simulate differ

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11

Kacem, Ahmed, Hervé Laurent, and Sandrine Thuillier. "Prediction of forming limit curve for AA6061-T6 at room and elevated temperatures." IOP Conference Series: Materials Science and Engineering 1238, no. 1 (2022): 012044. http://dx.doi.org/10.1088/1757-899x/1238/1/012044.

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Abstract Forming Limit Curve (FLC) has been widely adopted as a practical criterion for evaluating the formability of sheet metals. Predicting a reliable FLC by a virtual methodology could lead to robust process optimization before expensive tool manufacturing. In order to increase the predictive capabilities of the virtual forming tools, an accurate modeling of the forming limit curve should be considered at room and elevated temperatures. In this work, the isothermal forming limit curves of 6000 series aluminum alloy sheet metal are predicted by performing numerical simulations of Nakajima t

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12

Yuan, Huang, Guoyu Lin, and Alfred Cornec. "Verification of a Cohesive Zone Model for Ductile Fracture." Journal of Engineering Materials and Technology 118, no. 2 (1996): 192–200. http://dx.doi.org/10.1115/1.2804886.

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In the present paper, ductile crack growth in an aluminium alloy is numerically simulated using a cohesive zone model under both plane stress and plane strain conditions for two different fracture types, shear and normal modes. The cohesive law for ductile fracture consists of two parts—a specific material’s separation traction and energy. Both are assumed to be constant during ductile fracture (stable crack growth). In order to verify the assumed cohesive law to be suitable for ductile fracture processes, experimental records are used as control curves for the numerical simulations. For a con

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13

Toan, Nguyen Duc, Nguyen Trong Hung, Bui Ngoc Tuyen, and Nguyen Tien Dong. "FEM STUDY TO VERIFY THE EFFECT OF EMBOSSING AND WAVE SHAPES ON FORMABILITY OF STAMPING PROCESS FOR MULTI-HOLE ETCHING METAL FOIL USING SUS316L MATERIAL." ASEAN Engineering Journal 2, no. 2 (2012): 43–50. http://dx.doi.org/10.11113/aej.v2.15348.

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In current study, to predict ductile fracture and spring-back in making embossing shape using multi-hole etching metal foil of SUS316L material, FEM simulation was adopted. Ductile fracture criterion of forming limit diagram (FLD) and stress-strain curve based on experimental data were first input to ABAQUS/Explicit finite element code to predict failure and spring-back occurrences. Several simulations were then performed with the dimension changing of etching holes in order to simulate and investigate press formability of final product after forming process. The better case was obtained by ut

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14

Fang, Yuxuan, Biao Li, Chang-Sung Seok, and Tao Shen. "The Application of Numerical Ductile Fracture Simulation in the LBB Evaluation of Nuclear Pipes." Applied Sciences 15, no. 13 (2025): 7010. https://doi.org/10.3390/app15137010.

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The leak-before-break (LBB) concept is widely used in the design and estimation of piping systems of nuclear power plants, which requires considerable test work to obtain the fracture resistance (J-R) curves of nuclear pipes. The application of numerical ductile fracture simulation can effectively limit the test work. In this study, an extended stress-modified critical strain (SMCS) model is applied to simulate the crack growth behaviors of full-scale nuclear pipes (SA312 TP304L stainless steel) with a circumferential through-wall crack under a four-point bending load. The LBB evaluation is pe

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15

Pour Mahmoud, N., and A. Zabihi. "Numerical Simulation of a Single-Phase Flow Through Fractures with Permeable, Porous and Non-Ductile Walls." Engineering, Technology & Applied Science Research 7, no. 5 (2017): 2041–46. http://dx.doi.org/10.48084/etasr.1448.

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This paper attempts to study flows within fractures through a set of numerical simulations. In addition, a special care is given to hydraulic features and characteristics of fractures. The research is performed through the application of calculative fluid dynamics and a finite volume discrete schema. The investigated flows are laminar, single-phase and stable flows of water and air through fractures with penetrable walls. The selected fracture geometry is inspired from the tomographic scan of a stone fracture. Water and air are modeled in fractures with permeable walls and different permeabili

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16

Pour, Mahmoud N., and A. Zabihi. "Numerical Simulation of a Single-Phase Flow Through Fractures with Permeable, Porous and Non-Ductile Walls." Engineering, Technology & Applied Science Research 7, no. 5 (2017): 2041–46. https://doi.org/10.5281/zenodo.1037234.

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This paper attempts to study flows within fractures through a set of numerical simulations. In addition, a special care is given to hydraulic features and characteristics of fractures. The research is performed through the application of calculative fluid dynamics and a finite volume discrete schema. The investigated flows are laminar, single-phase and stable flows of water and air through fractures with penetrable walls. The selected fracture geometry is inspired from the tomographic scan of a stone fracture. Water and air are modeled in fractures with permeable walls and different permeabili

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17

Guo, Junhang, Ri-ichi Murakami, and Shengdun Zhao. "A STUDY ON EXPERIMENTS AND SIMULATIONS FOR DUCTILE FRACTURE OF ISOTROPIC MATERIAL USING ROUSSELIER'S DAMAGE MODEL." International Journal of Modern Physics: Conference Series 06 (January 2012): 257–62. http://dx.doi.org/10.1142/s2010194512003273.

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Ductile fracture has been a hot topic for a long time for its importance to mechanical design in evaluating the risk of failure. In this paper, the A5052BD-H14's ductile fracture is studied using a new constitutive equation based on the continuum damage mechanics. A novel full-implicit stress integration algorithm is developed based on Rousselier's damage model and implemented into finite element analysis (FEA) models by the ABAQUS/Explicit using the user material subroutine. The tensile tests of A5052BD-H14 with notch were taken and the load-displacement curves were recorded. By simulations,

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18

Kvačkaj, Tibor, Juraj Tiža, Július Bacsó, et al. "Cockcroft-Latham Ductile Fracture Criteria for Non Ferrous Materials." Materials Science Forum 782 (April 2014): 373–78. http://dx.doi.org/10.4028/www.scientific.net/msf.782.373.

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The determination of ductile fracture criteria as well as friction coefficient, stress-strain curves, constants for Hollomon's equation and a material workability based on analytical methods as a forming limit diagram, a normalized Cockcroft-Latham criteria (nCL)) ring and compression tests for two materials based on aluminum and copper alloys were carried out. A calculation of nCL criteria on the basis of a compression test and numerical simulations was made. The critical values nCL criteria resulting from compression test were determined. Prediction of nCL criteria by numerical simulations w

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19

Eom, Ji-Ho, Chul Kyu Jin, Dae-Young Ahn, JSS Babu, Jun-Young Jang, and Min Sik Lee. "Comparison of FE Simulation and Experiment on Tensile Test of TWB-HPF 22MnB5 Steel." Metals 14, no. 10 (2024): 1176. http://dx.doi.org/10.3390/met14101176.

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Finite element (FE) analysis of the tensile test of TWB-HPF 22MnB5 steel was performed and compared with the experimental results. To improve the accuracy of the simulation, the damage theory of FLD and ductile damage theory were used in 2D and 3D simulations. The tensile strength of 22MnB5 steel was determined under various welding heat inputs for FE simulation. Crack propagation of the welded region indicated that the fracture was observed in the base metal under normal welding conditions. Also, the crack propagated along the HAZ region due to higher heat input of the welding, and lead fract

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20

Keralavarma, Shyam M. "A multi-surface plasticity model for ductile fracture simulations." Journal of the Mechanics and Physics of Solids 103 (June 2017): 100–120. http://dx.doi.org/10.1016/j.jmps.2017.03.005.

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21

Quan, Guo-zheng, Gui-chang Luo, An Mao, Jian-ting Liang, and Dong-sen Wu. "Evaluation of Varying Ductile Fracture Criteria for 42CrMo Steel by Compressions at Different Temperatures and Strain Rates." Scientific World Journal 2014 (2014): 1–10. http://dx.doi.org/10.1155/2014/579328.

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Fracturing by ductile damage occurs quite naturally in metal forming processes, and ductile fracture of strain-softening alloy, here 42CrMo steel, cannot be evaluated through simple procedures such as tension testing. Under these circumstances, it is very significant and economical to find a way to evaluate the ductile fracture criteria (DFC) and identify the relationships between damage evolution and deformation conditions. Under the guidance of the Cockcroft-Latham fracture criteria, an innovative approach involving hot compression tests, numerical simulations, and mathematic computations pr

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22

Ben Chabane, Nassima, Nassim Aguechari, and Mohand Ould Ouali. "Study of the slant fracture in solid and hollow cylinders: Experimental analysis and numerical prediction." Frattura ed Integrità Strutturale 17, no. 63 (2022): 169–89. http://dx.doi.org/10.3221/igf-esis.63.15.

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This paper is devoted to the numerical and experimental study of ductile fracture in bulk metal forming of the 2017A-T4 aluminum alloy. From an experimental standpoint, the ductile fracture of the 2017A-T4 aluminum alloy is investigated under compressive load. Two cross-sections of solid and hollow specimens are considered. The mechanical behavior and the microstructure of the 2017A-T4 aluminum alloy were characterized. It is found that the well-known barrel shape is obtained when a compressive load is applied. Analyses of fracture topographies show a ductile fracture with dimples under tensio

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23

Rahafrooz, M., M. Sanjari, M. Moradi, and Danial Ghodsiyeh. "Prediction of Rupture in Gas Forming Process Using Continuum Damage Mechanic." Advanced Materials Research 463-464 (February 2012): 1047–51. http://dx.doi.org/10.4028/www.scientific.net/amr.463-464.1047.

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The Continuum Damage Mechanics is a branch of applied mechanics that used to predict the initiation of cracks in metal forming process. In this article, damage definition and ductile damage model are explained, and also ductile damage model is applied to predict initiation of fracture in gas metal forming process with ABAQUS/EXPLICIT simulation. In this method instead of punch, the force is applied by air pressure. In this study, first the ductile damage criterion and its relations are taken into account and, subsequently, the process of gas-aid formation process is put into consideration and

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24

Goijaerts, A. M., L. E. Govaert, and F. P. T. Baaijens. "Prediction of Ductile Fracture in Metal Blanking." Journal of Manufacturing Science and Engineering 122, no. 3 (1999): 476–83. http://dx.doi.org/10.1115/1.1285909.

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This study is focused on the description of ductile fracture initiation, which is needed to predict product shapes in the blanking process. Two approaches are elaborated using a local ductile fracture model. According to literature, characterization of such a model should take place under loading conditions, comparable to the application. Therefore, the first approach incorporates the characterization of a ductile fracture model in a blanking experiment. The second approach is more favorable for industry. In this approach a tensile test is used to characterize the fracture model, instead of a

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25

Cai, Wei, Zhihui Zhou, Xudong Qian, et al. "Numerical Study on Ductile Failure Behaviours of Steel Structures under Quasi-Static Punch Loading." Journal of Marine Science and Engineering 11, no. 6 (2023): 1197. http://dx.doi.org/10.3390/jmse11061197.

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A reliable finite element procedure to simulate shear-dominated ductile fractures in large-scale, thin-walled steel structures is still evolving primarily due to the challenges in determining the failure criterion of metal materials under complex stress states. This paper aims to examine the accuracy of the modified Gurson–Tvergaard–Needleman (GTN) model considering the shear failure in simulating the ductile fracture of steel plate structures under quasi-static punch loading. The modified GTN damage models are performed by the ABAQUS user-defined material subroutine (VUMAT). The void-related

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26

Lu, Yue, Kun Liu, Zili Wang, Wenyong Tang, and Jørgen Amdahl. "Development of ductile fracture modelling approach in ship impact simulations." Ocean Engineering 252 (May 2022): 111173. http://dx.doi.org/10.1016/j.oceaneng.2022.111173.

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Kang, K., and W. Cai. "Brittle and ductile fracture of semiconductor nanowires – molecular dynamics simulations." Philosophical Magazine 87, no. 14-15 (2007): 2169–89. http://dx.doi.org/10.1080/14786430701222739.

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SUGIYAMA, Hirofumi, Kazumi MATSUI, and Takahiro YAMADA. "Ductile fracture simulations by damage model and finite cover method." Proceedings of The Computational Mechanics Conference 2016.29 (2016): 4_210. http://dx.doi.org/10.1299/jsmecmd.2016.29.4_210.

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Anvari, Majid, Jun Liu, and Christian Thaulow. "Dynamic ductile fracture in aluminum round bars: experiments and simulations." International Journal of Fracture 143, no. 4 (2007): 317–32. http://dx.doi.org/10.1007/s10704-007-9062-9.

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Guo, Jun Hang, Ri Ichi Murakami, and Sheng Dun Zhao. "Simulation of Ductile Fracture in an Aluminum Alloy Using Various Criteria." Advanced Materials Research 560-561 (August 2012): 973–78. http://dx.doi.org/10.4028/www.scientific.net/amr.560-561.973.

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There are many models and failure criteria have been developed to predict the ductile fracture (DF) in metal plastic deformation. But usually, it is difficult to select a suitable model and the corresponding criterion from them. So, finding a way to identity their applicability and reliability is useful for selecting these DF criteria. In this paper, ductile fracture of aluminum alloy A5052P-H34 is studied by experiments and finite element simulations. In experiments, the mode I crack was obtained by uniaxial tension of plate with a circular hole in the center. The von Mises yield model and co

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Oh, Chang Kyun, Yun Jae Kim, Jong Hyun Baek, Young Pyo Kim, and Woo Sik Kim. "A Micromechanical Model for Ductile Fracture of API X65." Key Engineering Materials 321-323 (October 2006): 43–47. http://dx.doi.org/10.4028/www.scientific.net/kem.321-323.43.

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This paper presents a micro-mechanical model of ductile fracture for the API X65 steel, using the Gurson-Tvergaard-Needleman (GTN) model. Experimental tests and FE damage simulations using the GTN model are performed for smooth and notched tensile bars with three different notch radii, from which micromechanical parameters in the GTN model are calibrated. The calibrated micro-mechanical model is applied to quantify pre-strain effects on plastic deformation and fracture of the API X65 steel. Good agreements of the FE damage results with experimental data suggest confidence in the use of the pro

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Qian, L., Hiroyuki Toda, Kentaro Uesugi, Masakazu Kobayashi, and Toshiro Kobayashi. "3D Image-Based Modeling of Ductile Fracture in an Aluminum Alloy Using Synchrotron X-Ray CT Images." Materials Science Forum 561-565 (October 2007): 263–66. http://dx.doi.org/10.4028/www.scientific.net/msf.561-565.263.

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Traditional computational models always assume idealized crack geometry. However, actual crack geometry is very complex in real materials and thus, those simulations do not realistically represent the actual loading conditions of a real crack. In this paper, three-dimensional (3D) image-based simulation was performed to investigate the fracture behavior of an aluminum alloy, and the model takes into account the real crack geometry based on the 3D images of the crack. Accordingly, many essential features of fracture can be identified and interpreted, and some new insight into fracture behavior

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Zhuang, Xincun, Yehui Meng, and Zhen Zhao. "Evaluation of prediction error resulting from using average state variables in the calibration of ductile fracture criterion." International Journal of Damage Mechanics 27, no. 8 (2017): 1231–51. http://dx.doi.org/10.1177/1056789517728563.

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In order to evaluate the prediction error resulting from using average state variables in the calibration procedure of the ductile fracture criterion, a series of experiments and corresponding simulations were performed to extract the evolution of fracture-related state variables such as stress triaxiality (η), Lode parameter, and equivalent strain to fracture at the fracture initiation points. The average stress triaxiality, average Lode parameter, and equivalent strain to fracture were used to calibrate the Lou-Huh (L-H) ductile fracture criterion. The average induced prediction error was ev

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Haskul, Mehmet, and Eray Arslan. "Fracture Initiation in Aluminum Alloys Under Multiaxial Loading at Various Low Strain Rates." Metals 15, no. 7 (2025): 785. https://doi.org/10.3390/met15070785.

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The initiation of ductile fractures in medium-strength AW5754 and high-strength AW6082 aluminum alloys at different quasi-static strain rates and under multiaxial stress states was investigated through a series of tensile tests using various specimen geometries. The sensitivity of the stress triaxiality locus to variations in the loading rate was examined for these two aluminum alloy families. Fractographic and elemental analyses were also conducted via SEM and EDS. Numerical simulations based on the finite element method (FEM) were performed using ABAQUS/Standard to determine the actual stres

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Zhao, Lianxing, Xiaotao Fei, Chaifeng Sun, Peng Liu, and Di Li. "The Study and Application on Ductile Fracture Criterion of Dual Phase Steels During Forming." Metals 14, no. 11 (2024): 1301. http://dx.doi.org/10.3390/met14111301.

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High-strength steel exhibits complex fracture behavior due to the interplay between shear and necking mechanisms during stamping and forming processes, posing challenges to achieving the dimensional accuracy and reliability demanded for automotive body panels. Existing prediction methods often fail to simultaneously account for both tensile and shear fracture characteristics, thereby limiting their predictive accuracy under diverse stress conditions. To address this limitation, we propose a ductile fracture criterion that integrates both tensile and shear mechanisms, calibrated using a single

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Hentati, Hamdi, Ilyes Ben Naceur, Wassila Bouzid, and Aref Maalej. "Numerical Analysis of Damage Thermo-Mechanical Models." Advances in Applied Mathematics and Mechanics 7, no. 5 (2015): 625–43. http://dx.doi.org/10.4208/aamm.2014.m517.

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AbstractIn this paper, we present numerical computational methods for solving the fracture problem in brittle and ductile materials with no prior knowledge of the topology of crack path. Moreover, these methods are capable of modeling the crack initiation. We perform numerical simulations of pieces of brittle material based on global approach and taken into account the thermal effect in crack propagation. On the other hand, we propose also a numerical method for solving the fracture problem in a ductile material based on elements deletion method and also using thermo-mechanical behavior and da

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Chuzhoy, L., R. E. DeVor, S. G. Kapoor, A. J. Beaudoin, and D. J. Bammann. "Machining Simulation of Ductile Iron and Its Constituents, Part 1: Estimation of Material Model Parameters and Their Validation." Journal of Manufacturing Science and Engineering 125, no. 2 (2003): 181–91. http://dx.doi.org/10.1115/1.1557294.

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A microstructure-level simulation model was recently developed to characterize machining behavior of heterogeneous materials. During machining of heterogeneous materials such as cast iron, the material around the machining-affected zone undergoes reverse loading, which manifests itself in permanent material softening. In addition, cracks are formed below and ahead of the tool. To accurately simulate machining of heterogeneous materials the microstructure-level model has to reproduce the effect of material softening on reverse loading (MSRL effect) and material damage. This paper describes proc

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Wciślik, Wiktor, and Robert Pała. "Some Microstructural Aspects of Ductile Fracture of Metals." Materials 14, no. 15 (2021): 4321. http://dx.doi.org/10.3390/ma14154321.

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The paper discusses the basic issues of the local approach to ductile fracture of structural metals, with particular emphasis on the failure due to microvoid development. The mechanisms of nucleation of voids around inclusions and precipitates are characterized. The criteria for the nucleation of voids resulting from cracking of the existing particles or their separation from the material matrix are presented. Selected results of experimental studies and Finite Element Method (FEM) simulations on nucleation of voids are discussed. The analytical and numerical models of growth and coalescence o

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Grolleau, Vincent, Vincent Lafilé, Christian C. Roth, Bertrand Galpin, Laurent Mahéo, and Dirk Mohr. "Rate-dependent ductile fracture under plane strain tension: experiments and simulations." EPJ Web of Conferences 183 (2018): 02022. http://dx.doi.org/10.1051/epjconf/201818302022.

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Among all other stress states achievable under plane stress conditions, the lowest ductility is consistently observed for plane strain tension. For static loading conditions, V-bending of small sheet coupons is the most reliable way of characterising the strain to fracture for plane strain tension. Different from conventional notched tension specimens, necking is suppressed during V-bending which results in a remarkably constant stress state all the way until fracture initiation. The present DYMAT talk is concerned with the extension of the V-bending technique from low to high strain rate expe

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Vladimirov, Ivaylo N., Michael P. Pietryga, Yalin Kiliclar, Vivian Tini, and Stefanie Reese. "Failure modelling in metal forming by means of an anisotropic hyperelastic-plasticity model with damage." International Journal of Damage Mechanics 23, no. 8 (2014): 1096–132. http://dx.doi.org/10.1177/1056789513518953.

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In metal forming, formability is limited by the evolution of ductile damage in the work piece. The accurate prediction of material failure requires, in addition to the description of anisotropic plasticity, the inclusion of damage in the finite element simulation. This paper discusses the application of an anisotropic hyperelastic-plasticity model with isotropic damage to the numerical simulation of fracture limits in metal forming. The model incorporates plastic anisotropy, nonlinear kinematic and isotropic hardening and ductile damage. The constitutive equations of the proposed model are num

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Amri, A. El, M. H. El Yakhloufi, and A. Khamlichi. "Identification Damage Model for Thermomechanical Degradation of Ductile Heterogeneous Materials." International Journal of Applied Mechanics and Engineering 22, no. 2 (2017): 475–81. http://dx.doi.org/10.1515/ijame-2017-0031.

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AbstractThe failure of ductile materials subject to high thermal and mechanical loading rates is notably affected by material inertia. The mechanisms of fatigue-crack propagation are examined with particular emphasis on the similarities and differences between cyclic crack growth in ductile materials, such as metals, and corresponding behavior in brittle materials, such as intermetallic and ceramics. Numerical simulations of crack propagation in a cylindrical specimen demonstrate that the proposed method provides an effective means to simulate ductile fracture in large scale cylindrical struct

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Charoensuk, Kritchanan, and Viton Uthaisangsuk. "Determination of 3D Ductile Failure Criteria for Advanced High Strength Steel Sheet." Key Engineering Materials 658 (July 2015): 53–58. http://dx.doi.org/10.4028/www.scientific.net/kem.658.53.

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In this work, 3D ductile fracture locus was determined for the advanced high strength (AHS) steel sheet grade DP780 using a hybrid approach between experiment and FE simulation. Tensile tests of different sample geometries were performed for the investigated dual phase steel, by which varying stress triaxiality (η) and lode angle (θ) values developed in the material during loading were introduced. During the tests, the direct current potential drop (DCPD) method and digital image correlation (DIC) technique were applied for identifying crack initiation on the micro-scale and fracture of the sp

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Bao, Zeying, та Fulin Shang. "New Insights on the Tensile Strength and Fracture Mechanism of c-ZrO2/α-Al2O3 Interfaces". Applied Sciences 13, № 6 (2023): 3742. http://dx.doi.org/10.3390/app13063742.

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The tensile strength and fracture properties of the c-ZrO2(001)/α-Al2O3(11¯02) interfaces were investigated by first-principle tensile simulations. Models with different stacking sequences of c-ZrO2(001) were examined. The theoretical tensile strength and work of adhesion were present. It was found that the adhesive strength of the interface was strongly influenced by the termination of c-ZrO2(001), and the c-ZrO2(001)/α-Al2O3(11¯02) interfaces adhered weakly. Then, variations of the atomic bonds were observed to clarify the fracture characteristics of the interfaces. Our study indicates that

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Spielmannová, Alena, Anna Machová, and Petr Hora. "Crack Orientation versus Ductile-Brittle Behavior in 3D Atomistic Simulations." Materials Science Forum 567-568 (December 2007): 61–64. http://dx.doi.org/10.4028/www.scientific.net/msf.567-568.61.

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The paper presents results of molecular dynamic (MD) simulations in 3D bcc iron crystals with edge pre-existing cracks (001)[110] and (110) [110] (crack plane/crack front) loaded uni-axially in tension mode I at temperature of 300 K. The iron crystals in MD have the same orientation and similar geometry as in our recent fracture tests performed at room temperature on iron (3wt.%Si) single crystals [1].

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Bolli, Eleonora, Alessandra Fava, Paolo Ferro, et al. "Cr Segregation and Impact Fracture in a Martensitic Stainless Steel." Coatings 10, no. 9 (2020): 843. http://dx.doi.org/10.3390/coatings10090843.

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The fracture surfaces of a 10.5 wt.% Cr martensitic stainless steel broken in Charpy tests have been investigated through X-ray photoelectron spectroscopy (XPS). The specimens have been examined in two different conditions: as-quenched and heat treated for 10 h at 700 °C. The trends of Fe/Cr ratio vs. test temperature are similar to the sigmoidal curves of absorbed energy and, after both ductile and quasi-cleavage brittle fractures, such ratio is always significantly lower than the nominal value of the steel chemical composition. Cr segregation does not occur on a macroscopic scale but takes p

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Zhang, Hua, Hong Zhang, Fuguo Li, and Jun Cao. "A Novel Damage Model to Predict Ductile Fracture Behavior for Anisotropic Sheet Metal." Metals 9, no. 5 (2019): 595. http://dx.doi.org/10.3390/met9050595.

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The purpose of the present work is to investigate the fracture behavior of anisotropic sheet metal under various stress states. Notched tension and flat-grooved tension tests at 0°, 45°, and 90° directions with respect to rolling direction were carried out by a hybrid experimental–numerical approach, and then a novel damage model was proposed by coupling Hill48’s criterion. Based on this, finite element method (FEM) analysis models were established. The force–displacement responses of experiments and simulations are in good agreement, which verify the FEM models. The predictability of the dama

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Cerik, Burak Can, and Joonmo Choung. "Fracture Prediction of Steel-Plated Structures under Low-Velocity Impact." Journal of Marine Science and Engineering 11, no. 4 (2023): 699. http://dx.doi.org/10.3390/jmse11040699.

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In this paper, a validation study of a recently proposed rate-dependent shell element fracture model using quasi-static and dynamic impact tests on square hollow sections (SHS) made from offshore high-tensile strength steel was presented. A rate-dependent forming limit curve was used to predict the membrane loading-dominated failure, while a rate-dependent ductile fracture locus was applied for predicting failure governed by bend loading. The predicted peak force and fracture initiation using the adopted material and fracture model agreed well with the experimental results. The fracture mode w

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SUGIYAMA, Hirofumi, Kazumi MATSUI, Takahiro YAMADA, and Shigenobu OKAZAWA. "Ductile fracture simulations by damage model based on continuous damage mechanics." Proceedings of The Computational Mechanics Conference 2017.30 (2017): 307. http://dx.doi.org/10.1299/jsmecmd.2017.30.307.

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WANG, Fangyi, Hiroki YASUFUKU, and Takehiro FUJIMOTO. "Numerical simulations for 3 point ductile metal fracture under projectile collision." Proceedings of The Computational Mechanics Conference 2019.32 (2019): 137. http://dx.doi.org/10.1299/jsmecmd.2019.32.137.

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Mediavilla, J., R. H. J. Peerlings, and M. G. D. Geers. "A robust and consistent remeshing-transfer operator for ductile fracture simulations." Computers & Structures 84, no. 8-9 (2006): 604–23. http://dx.doi.org/10.1016/j.compstruc.2005.10.007.

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