This is a post to share the test data for Aluminum 356. Just a single uniaxial tension pull-test out to failure. Prior to using for calibration of elastic-plastic material models, one should truncate the test data to end at or before the ultimate point.
The video below is performed with a development version of the 3DX calibration app that is close to the 2020x FD02 (FP2014) release. This video was created on 05-13-2020 and shows a calibration of a Johnson-Cook elasto-plastic material model, followed by a calibration of the isotropic, tabular material model. The calibration time of 32 seconds, mentioned in the video, is a little long because I was using a development version of the software. For the released software calibration times are 10-13 seconds.
Note added on 06-30-2023: As we implemented the calibration of Hosford-Coulomb metal damage (CDM, Continuum Damage Mechanics), we also added four "tabularized" equation-based isotropic hardening laws, taken from the public literature. The hardening law equations, the parameters, are used in the UI to drive the calibration process, but since these hardening laws do not exist in the Abaqus solver, they are written to the solver in a isotropic tabular fashion.
The isotropic tabular values ("the tabularization") are determined by way of these three values below (red box). And the tabularized hardening curve can be visualized using the icon (green box).
The Ludwik equation is identical to the (Abaqus native) Johnson-Cook form. However, because of the tabularization process the usage in the calibration is slightly different. In the CDM literature, some authors pointed to the fact that a metal's hardening curve might best include a linear hardening curve beyond some point. To achieve that with these tabularized forms, the user stipulates the maximum plastic strain, and the "Include linear extrapolation". In the example below, the hardening curve will be a linear extrapolation beyond a plastic strain = 2.
The Voce equation is also identical to the (Abaqus native) Isotopic Exponential form, except for this linear exptrapolation aspect.
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