Numerical and Experimental Study of Strain Localization in Notched Specimens of a Ductile Steel on Meso‐ and Macroscales

Panin, S. V.; Vinogradov, Alexei; Моисеенко, Д. Д.; Maksimov, Pavel; Berto, Filippo; Byakov, A. V.; Еремин, А. В.; Narkevich, N. A.

doi:10.1002/adem.201600206

Cited by 10 publications

(5 citation statements)

References 39 publications

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“…This is particularly important under high-rate loading when the dissipation of the elastic energy supplied into the specimen can significantly increase the impact fracture energy [42,43]. This is confirmed by the temperature dependences of specific rotation energy ( Figure 6).…”

Section: Simulation Of Impact Loading Meso-dynamics At Different Tempmentioning

confidence: 84%

Effect of Structural Heterogeneity of 17Mn1Si Steel on the Temperature Dependence of Impact Deformation and Fracture

Моисеенко

Maruschak

Panin

et al. 2017

Metals

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Abstract:The paper deals with a theoretical and experimental study of the relationship between the microstructural parameters, mechanical properties, and impact deformation and fracture of steels using the example of 17Mn1Si pipe steel. A model for the behavior of a polycrystalline grain conglomerate under impact loading at different temperatures was proposed within a cellular automata framework. It was shown that the intensity of dissipation processes explicitly depends on temperature and these processes play an important role in stress relaxation at the boundaries of structural elements. The Experimental study reveals the relationship between pendulum impact test temperature and the deformation/fracture energy of the steel. The impact toughness was shown to decrease almost linearly with the decreasing test temperature, which agrees with the fractographic analysis data confirming the increase in the fraction of brittle fracture in this case. It was shown with the aid of the proposed model and numerical simulations that the use of the excitable cellular automata method and an explicit account of test temperature through the possibility of energy release at internal interfaces help to explain the experimentally observed features of impact failure at different temperatures.

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Section: Simulation Of Impact Loading Meso-dynamics At Different Tempmentioning

confidence: 84%

Effect of Structural Heterogeneity of 17Mn1Si Steel on the Temperature Dependence of Impact Deformation and Fracture

Моисеенко

Maruschak

Panin

et al. 2017

Metals

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“…(2014) employed the DIC technique to observe the central crack propagation behavior of the 2014-T6 Al alloy plate under fatigue load. Panin et al. (2016) studied the influence of notch shape on plastic flow and crack initiation at notch tip by using the DIC technique.…”

Section: Introductionmentioning

confidence: 99%

“…Srilakshmi et al (2014) employed the DIC technique to observe the central crack propagation behavior of the 2014-T6 Al alloy plate under fatigue load. Panin et al (2016) studied the influence of notch shape on plastic flow and crack initiation at notch tip by using the DIC technique. Ren et al (2020) adopted the DIC technique to analyze the strain distribution of steel plate welded joint, and established a nonlinear strain model with the reconstructed strain.…”

Section: Introductionmentioning

confidence: 99%

Multiaxial fatigue behavior and life prediction of 2198-T8 Al-Li alloy notched tubular specimen based on DIC technique

Wei

Zhu

2022

International Journal of Damage Mechanics

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2198-T8 aluminum-lithium alloy is an advanced aeronautical engineering material. The multiaxial fatigue tests of notched specimens are conducted with the variables of notch diameter, notch number, and equivalent stress amplitude, respectively. The strain field and fatigue life are characterized and calculated by digital image correlation (DIC) technique. The results show that: the fatigue life decreases with the increase of notch diameter, number of notches, and the equivalent stress amplitude. The strain curves calculated by VIC-3D are similar to those obtained by the testing. The normal and shear strain concentration becomes obvious at 80% to 90% fatigue life, and the surface cracks appear at 95% fatigue life, typical multiaxial fatigue morphologies including tire patterns and wear fatigue striations are observed on the fracture surface. The feasibility of the DIC technique to characterize multiaxial fatigue behavior is verified. The modified SWT model provides fine life prediction results with all predicted data within a factor of two.

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“…The development of simulation tools for microstructurecentered investigations has seen a large progress since the establishment of Advanced Engineering Materials (AEM) in 1999. Comparing the work from the early volumes [20][21][22][23][24][25][26] with recently appeared publications [27][28][29][30][31][32][33][34][35] reveals not only that the increased computational power allows to increase time and length scale and temporal and spatial discretization, but also that recent models are more often based on physical-oriented grounds instead of relying on phenomenological expressions. [36] A rather recent trend, only made possible by these improvements, is the integration of models describing different aspects such as dislocation glide, twinning, phase transformation, recrystallization, and precipitation into truly integrated tools for ICME.…”

Section: Introductionmentioning

confidence: 99%

Solving Material Mechanics and Multiphysics Problems of Metals with Complex Microstructures Using DAMASK—The Düsseldorf Advanced Material Simulation Kit

et al. 2020

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Predicting process–structure and structure–property relationships are the key tasks in materials science and engineering. Central to both research directions is the internal material structure. In the case of metallic materials for structural applications, this internal structure, the microstructure, is the collective ensemble of all equilibrium and nonequilibrium lattice imperfections. Continuum models to derive process–structure and structure–property relationships are based on two ingredients: 1) quantitative state variables that capture the essential features of the material's state and 2) kinetic equations for the state that describe its evolution under load. Successful models, that is, models that are of practical use, depend on state variables and corresponding evolution laws that are sufficiently representative for the microstructure and that are able to describe the phenomena of interest. The development of software tools capable to integrate these different aspects to get a holistic view of process–structure–property relationships requires joint efforts from specialists in different disciplines and a long‐term perspective. The Düsseldorf Advanced Material Simulation Kit (DAMASK) is such a tool. In this overview article published on the occasion of Advanced Engineering Materials' 20th anniversary, some representative application examples which demonstrate how DAMASK can be used to study metallic microstructures at different length scales are presented.

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Numerical and Experimental Study of Strain Localization in Notched Specimens of a Ductile Steel on Meso‐ and Macroscales

Cited by 10 publications

References 39 publications

Effect of Structural Heterogeneity of 17Mn1Si Steel on the Temperature Dependence of Impact Deformation and Fracture

Effect of Structural Heterogeneity of 17Mn1Si Steel on the Temperature Dependence of Impact Deformation and Fracture

Multiaxial fatigue behavior and life prediction of 2198-T8 Al-Li alloy notched tubular specimen based on DIC technique

Solving Material Mechanics and Multiphysics Problems of Metals with Complex Microstructures Using DAMASK—The Düsseldorf Advanced Material Simulation Kit

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