A 3D phenomenological yield function with both in and out-of-plane mechanical anisotropy using full-field crystal plasticity spectral method for modelling sheet metal forming of strong textured aluminum alloy

Liu, Wencheng; Chen, Bernard; Pang, Yong; Najafzadeh, Ali

doi:10.1016/j.ijsolstr.2020.02.008

Cited by 32 publications

(10 citation statements)

References 58 publications

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“…The yield loci obtained by the simulation were in good agreement with the experimental results. Liu et al [ 23 ] also used CPFFT to predict the anisotropic mechanical properties of aluminum alloy sheets under uniaxial and multiaxial stress states.…”

Section: Introductionmentioning

confidence: 99%

Crystal Plasticity Simulation of Yield Loci Evolution of SUS304 Foil

Men

Meng

2022

Materials

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The deformation process of metal foils is usually under a complex stress status, and the size effect has an obvious influence on the microforming process. To study the effect of grain orientation and grain size distribution on the yield loci evolution of SUS304 stainless steel foils, three representative volume element (RVE) models were built based on the open source tools NEPER and MTEX In addition, the yield loci with different grain sizes are obtained by simulation with Duisseldorf Advanced Material Simulation Kit (DAMASK) under different proportional loading conditions. The initial yield loci show a remarkable difference in shape and size, mainly caused by the distinct texture characteristics. By comparing the crystal plasticity simulation with the experimental results, the model with normal grain size distribution and initial texture based on Electron Back-scattered Diffraction (EBSD) data can more accurately describe the influence of the size effect on the shape and size of yield loci, which is the result of the interaction of grain size distribution and texture. However, the enhancement of grain deformation coordination will weaken the impact of the size effect on yield loci shape if the grain size distribution is more uniform.

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Section: Introductionmentioning

confidence: 99%

Crystal Plasticity Simulation of Yield Loci Evolution of SUS304 Foil

Men

Meng

2022

Materials

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“…Since the full-field CPFEM showed a good capability in the description of micromechanics of polycrystal under external loads, this advanced method can successfully reproduce the crystallographic texture induced mechanical anisotropy of as-rolled sheet metal observed by experimental uniaxial tensile tests in various material directions. 7,8,25–29 Furthermore, CPFEM can be used to predict the out-of-plane anisotropy due to no constraint on deformation mode. This property was difficult to be obtained by physical tests due to the thin wall structure of sheet metal.…”

Section: Introductionmentioning

confidence: 99%

Multi-level deep drawing simulations of AA3104 aluminium alloy using crystal plasticity finite element modelling and phenomenological yield function

Sun

Liu

2021

Advances in Mechanical Engineering

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This paper proposed a hierarchical multi-level model to study the crystallographic texture induced mechanical anisotropy of AA3104-H19 aluminium sheet from mesoscale to continuum scale. In the mesoscale, full-field crystal plasticity finite element method (CPFEM) was used to provide both in-plane and out-of-plane yield stresses and plastic potential points in various deformation modes. In the continuum scale, these materials sampling points were used to determine the parameters of two phenomenological yield functions (Yld2000-2d in plane stress space and Yld2004-18p in 3D stress space) using associated flow rule (AFR) and non-associated flow rule (non-AFR). The results indicate that higher accuracy obtained by Yld2000-2d and Yld2004-18p yield functions associated with non-AFR in comparison with AFR. These phenomenological models were successfully implemented into finite element (FE) code using an explicit integration scheme to simulate sheet metal forming. It is found that the 3D Yld2004-18p model involved with both in-plane and out-of-plane anisotropies is superior to 2D Yld2000-2d model which only accounts for in-plane anisotropy.

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“…The material parameters of the Yld91, Yld2000-2D, Yld2004-18p, and Yld2004-27p yield function were determined through a large number of yield stress data under arbitrary deformation paths. Liu et al 26 used the CPSM to determine a 3D phenomenological yield function with both in and out-of-plane mechanical anisotropy for modelling sheet metal forming of strongly textured AA3104-H19 and AA2024-T3.…”

Section: Introductionmentioning

confidence: 99%

A Virtual Laboratory Based on Full-Field Crystal Plasticity Simulation to Characterize the Multiscale Mechanical Properties of AHSS

Zhang

et al. 2021

Preprint

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In this work, we proposed a virtual laboratory based on full-field crystal plasticity simulation to track plastic anisotropy and to calibrate yield functions for multi-phase metals. The virtual laboratory, minimally, only requires easily accessible EBSD data for constructing the high-resolved microstructural representative volume element and macroscopic flow stress data for identifying the micromechanical parameters of constituent phases. An inverse simulation method based on global optimization scheme was developed for parameters identification, and a nonlinear least-squares method was employed to calibrate the yield functions. Various mechanical tests of an advanced high strengthening steel (DP980) sheet under different loading conditions were conducted to validate the virtual laboratory. Three well-known yield functions, the quadratic Hill48, Yld91, and Yld2004-18p, were selected as the validation benchmarks. All the studied functions, calibrated by numerous stress points under arbitrary loading conditions, successfully captured both the deformation and strength anisotropies. Furthermore, the full-field CP modeling well correlates the microscopic deformation mechanism and plastic heterogeneity to the macro-mechanical behavior of the sheet. The proposed virtual laboratory, which is readily extended with physically based CP model, could be a versatile tool to explore and predict the mechanical property and plastic anisotropy of advanced multi-phase metals.

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A 3D phenomenological yield function with both in and out-of-plane mechanical anisotropy using full-field crystal plasticity spectral method for modelling sheet metal forming of strong textured aluminum alloy

Cited by 32 publications

References 58 publications

Crystal Plasticity Simulation of Yield Loci Evolution of SUS304 Foil

Crystal Plasticity Simulation of Yield Loci Evolution of SUS304 Foil

Multi-level deep drawing simulations of AA3104 aluminium alloy using crystal plasticity finite element modelling and phenomenological yield function

A Virtual Laboratory Based on Full-Field Crystal Plasticity Simulation to Characterize the Multiscale Mechanical Properties of AHSS

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