Characterization of yielding behavior of sheet metal under biaxial stress condition at elevated temperatures

Merklein, Marion; Hußnätter, W.; Geiger, Manfred

doi:10.1016/j.cirp.2008.03.032

Cited by 79 publications

(12 citation statements)

References 15 publications

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“…That means, that this procedure is independent of the tested material and the testing temperature. As it has been shown in previous work [20] the yield strain of the aluminum wrought alloy AA6016 is determined to u vM = 0.30%. Due to scattering material parameters, e.g., local distribution of sheet thickness and uncertainties of measurement procedure the determined equivalent strain at onset of yielding may vary for the different tested specimens.…”

Section: Determination Of the Onset Of Yieldingmentioning

confidence: 99%

Experimental determination of yield loci for magnesium alloy AZ31 under biaxial tensile stress conditions at elevated temperatures

Geiger

Merklein

Hußnätter

et al. 2008

Prod. Eng. Res. Devel.

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The finite element analysis (FEA) has become one of the most relevant and most important tools in fields of sheet metal forming for designing processes and dimensioning parts. However, reliability and quality of the numerical results strongly depend on the whole FE-model and especially on the modeling of the material behavior, which shows wide impact on calculated stresses and strains of sheet metal parts. Therefore, the experimental determination of characteristic material data concerning anisotropic and temperatureeffects is essential. In this paper the influence of temperature on the yielding and the hardening behavior of the magnesium sheet metal alloy AZ31 are investigated for different uniaxial and biaxial stress conditions. For that purpose an experimental setup has been developed at the Chair of Manufacturing Technology (LFT) which enables biaxial tensile testing of sheet metal. Yield loci of AZ31 are determined as a function of temperature and they are based on solely measurement data of the forming process itself.

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Section: Determination Of the Onset Of Yieldingmentioning

confidence: 99%

Experimental determination of yield loci for magnesium alloy AZ31 under biaxial tensile stress conditions at elevated temperatures

Geiger

Merklein

Hußnätter

et al. 2008

Prod. Eng. Res. Devel.

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“…These are compared in a yield locus diagram with yield loci determined under uniaxial and biaxial tensile stress conditions [5,6]. These are compared in a yield locus diagram with yield loci determined under uniaxial and biaxial tensile stress conditions [5,6].…”

Section: Yield Locimentioning

confidence: 99%

Characterization of material behavior under pure shear condition

Hußnätter

Merklein

2008

Int J Mater Form

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“…This is because the determination of yield loci at elevated temperatures is not an easy task. Very recently, Geiger et al [6] designed an experimental setup for the biaxial tensile testing of sheet metal at elevated temperatures. In this work, an effort is being made to use the combination of experimental measurements and crystal plasticity model to identify the yield locus parameters at elevated temperature by activating more slip systems.…”

Section: Introductionmentioning

confidence: 99%

Effect of temperature on anisotropy in forming simulation of aluminum alloys

et al. 2009

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A combined experimental and numerical study of the effect of temperature on anisotropy in warm forming of AA 6016-T4 aluminum was performed. The anisotropy coefficients of the Vegter yield function were calculated from crystal plasticity models with an adequate combination of extra slip systems. Curve fitting was used to fit the anisotropy coefficients calculated at discrete temperatures. This temperature dependent constitutive model was successfully applied to the coupled thermo-mechanical analysis of deep drawing of aluminum sheet and results were compared with experiments.

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Characterization of yielding behavior of sheet metal under biaxial stress condition at elevated temperatures

Cited by 79 publications

References 15 publications

Experimental determination of yield loci for magnesium alloy AZ31 under biaxial tensile stress conditions at elevated temperatures

Experimental determination of yield loci for magnesium alloy AZ31 under biaxial tensile stress conditions at elevated temperatures

Characterization of material behavior under pure shear condition

Effect of temperature on anisotropy in forming simulation of aluminum alloys

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