Crystal plasticity extended models based on thermal mechanism and damage functions: Application to multiscale modeling of aluminum alloy tensile behavior

Hu, Ping; Liu, Yang; Zhu, Yu; Li, Ying

doi:10.1016/j.ijplas.2016.07.001

Cited by 78 publications

(21 citation statements)

References 65 publications

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“…(2006); Hammi and Horstemeyer (2007) and Saanouni (2012) have studied the alternatives of coupling Gurson’s type theories with CDM-based theories to propose a uniﬁed formulation of the coupled damage-behavior. Because of its simplicity and effectiveness, the CDM model is often used in many studies to assess the damage process (Hu et al., 2016; Kim and Yoon, 2015; Liu et al., 2018). These works show that the CDM models represent the early stage of the softening behavior of the crystal.…”

Section: Coupled Elastoplastic Model With Damage Modelmentioning

confidence: 99%

“…In this work, the plastic behavior is described by a model proposed by Méric et al., 1991). This model has been extensively used in several works which have proposed an important groundwork (see Barbe et al., 2001a, 2001b, 2009; Cailletaud, 1992; Diard et al., 2005; Hu et al., 2016; Osipov et al., 2008; Sai et al., 2006).…”

Section: Coupled Elastoplastic Model With Damage Modelmentioning

confidence: 99%

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Microstructural features effect on the evolution of cyclic damage for polycrystalline metals using a multiscale approach

Bouchedjra

Amrouche

Belouchrani

2020

International Journal of Damage Mechanics

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In the context of polycrystalline metals, the damage process analysis is generally restricted to surface of a sample containing some hundreds of grains, due to the inherent difficulties microstructural analysis. Determination of the grain size influence, misorientation and neighboring grains effect remains difficult with experimental studies. In this work, the influence of microstructural characteristics of polycrystalline metals on the evolution of the damage process under cyclic loading is investigated. On the basis of the quaternion theory, the orientation of each (crystal) grain is represented by a single angle (theta). The relative misorientation of each grain is set by the ratio of its misorientation over the average value of polycrystalline aggregate. The relative volume of grain is used as a parameter representing the grain size. The damage evolution under cyclic loading is identified using the coupling of the crystal plasticity model with the Continuum Damage Mechanics (CDM) model. The damage evolution and its distribution on polycrystalline aggregate are calculated by means of numerical homogenization over each grain. The heterogeneity distribution and damage evolution for polycrystalline metals have been analyzed. The obtained results show that neighboring grains effects are larger and may change the tendency that larger grains with great misorientation are the most damaged.

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Section: Coupled Elastoplastic Model With Damage Modelmentioning

confidence: 99%

Section: Coupled Elastoplastic Model With Damage Modelmentioning

confidence: 99%

Microstructural features effect on the evolution of cyclic damage for polycrystalline metals using a multiscale approach

Bouchedjra

Amrouche

Belouchrani

2020

International Journal of Damage Mechanics

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“…The rising questions will be how to obtain the true stress and strain relationship of the matrix material without the microvoid. The crystal plasticity is a very good option to simulate the matrix behaviour, but the difficulty in parameter calibration of the slip system 35 hinders its applications in the civil engineering field. And it is also difficult to model the microvoid coalescence to identify the critical void volume fraction.…”

Section: Introductionmentioning

confidence: 99%

Ductile fracture locus identification using mesoscale critical equivalent plastic strain

Xin

Veljković

Correia

et al. 2021

Fatigue Fract Eng Mat Struct

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The ductile performance of high strength steel (HSS) from different steel grades, producers, manufacturing processes varies a lot. It is also difficult to conduct all kinds of reliable experiments to generate different stress status through different initial specimen geometries or by applying different load combinations in the civil engineering sector. One of the common issues for HSS structures is to identify the parameters of the ductile fracture model conveniently from the uniaxial stress–strain relationship obtained from common coupon specimens. An attempt is made in this paper to use the proposed mesoscale critical equivalent plastic strain (MCEPS) to calibrate the fracture locus of the uncoupled phenomenological model based only on the engineering stress–strain relationship. The proposed method is successfully validated by the Sandia fracture challenge in 2014.

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“…Temperature effects on the mechanical response of a polycrystal using computational models with realistic microstructures have been introduced in many studies [28,29,30,31] using a standard, purely mechanical framework, neglecting the effect of thermal strains and not considering heat generation by plastic dissipation. The structural heating due to plastic dissipation in crystal plasticity has been accounted for as responsible for the local temperature increase using a Taylor model to homogenize the polycrystal response [32,33].…”

Section: Introductionmentioning

confidence: 99%

Development of a thermo-mechanically coupled crystal plasticity modeling framework: Application to polycrystalline homogenization

Romero

Segurado

2019

International Journal of Plasticity

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Accurate predictions of thermo-mechanically coupled process in metals can lead to a reduction of cost and an increase of productivity in manufacturing processes such as forming. For modeling these coupled processes with the finite element method, accurate descriptions of both the mechanical and the thermal responses of the material, as well as their interaction, are needed. Conventional material modeling employs empirical macroscopic constitutive relations but does not account for the actual thermo-mechanical mechanisms occurring at the microscopic level. However, the consideration of the latter might be crucial to obtain accurate predictions and a complete understanding of the underlying physics.In this work we describe a fully coupled implicit thermo-mechanical framework for crystal plasticity simulations. This framework includes thermal strains, temperature dependency of the crystal behavior and heat generation by dissipation due to plastic slip and allows the use of large deformation steps thanks to the implicit integration of the governing equations. Its use within computational homogenization simulations allows to bridge the plastic deformation and temperature gradients at the macroscopic scale with the microscopic slip at the grain scale. A series of numerical examples are presented to validate the approach.

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Crystal plasticity extended models based on thermal mechanism and damage functions: Application to multiscale modeling of aluminum alloy tensile behavior

Cited by 78 publications

References 65 publications

Microstructural features effect on the evolution of cyclic damage for polycrystalline metals using a multiscale approach

Microstructural features effect on the evolution of cyclic damage for polycrystalline metals using a multiscale approach

Ductile fracture locus identification using mesoscale critical equivalent plastic strain

Development of a thermo-mechanically coupled crystal plasticity modeling framework: Application to polycrystalline homogenization

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