Crystal plasticity modeling and experimental characterization of strain localization and forming limits in ferrite-pearlite steels

Isavand, Samaneh; Kardan-Halvaei, Mostafa; Assempour, Ahmad

doi:10.1016/j.ijsolstr.2021.111205

Cited by 12 publications

(10 citation statements)

References 33 publications

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“…Equation ( 13), which is the representation of Swift's diffuse necking criterion, could be used to calibrate equation (9). In order to accomplish this task, b must be replaced by three values of 0, 0.5, and 1 corresponding to uniaxial tension, plane strain tension, and equi-biaxial tension, respectively.…”

Section: Calibration Of the Generalized Modelmentioning

confidence: 99%

“…Figure 3 shows the experimentally obtained values of the limiting strain as well as the prediction of equation (9), where its constants are determined by the methods described in Calibration of the generalized model section. Expectedly, each calibration method yields different constants, which are reported in Table 2.…”

Section: Experimentally Obtained Flcmentioning

confidence: 99%

“…For each set of data points, it is possible to manipulate A, B, and C so that the best conformity is to be obtained with either branch of the FLC at the cost of non-conformity for the other branch. As the adopted methodology, fitting equation (9) to the data results in the minimum overall deviation between the predicted and experimentally measured values. On the other hand, these particular values resulted in the best conformity with the right branch of FLC.…”

Section: Experimentally Obtained Flcmentioning

confidence: 99%

“…work-hardening exponent). In this regard, the results of calibration of equation (9) based on Swift's model and Hill's model are shown in Figure 3. As it can be seen for the left side of FLC, good conformity exists between the experimental results and the phenomenological model calibrated by the Hill's model.…”

Section: Comparison Of Different Calibrationsmentioning

confidence: 99%

“…Many attempts could be found in the literature to explain and formulate the formability of the sheet materials theoretically, numerically, and phenomenologically. 7,8 In more recent studies, Isavand et al 9 approached the determination of the FLC of ferrite-pearlite steels using the finite element crystal plasticity model (CPFEM). They used the plastic instability criterion as the determinative factor indicating the onset of flow localization and found a good agreement between the experimentally acquired FLC and that obtained by CPFEM.…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Generalized phenomenological model to analyze the forming limit curve of Al 1050

Anbaran

Lotfabad

Ebrahimi

et al. 2023

The Journal of Strain Analysis for Engineering Design

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In this investigation, the previously proposed phenomenological model in the literature is generalized both in terms of the mathematical form of the model and the yield function used to describe the plasticity of the material. Al 1050 is chosen as the model material, where the sheets made from this material are first annealed and then subjected to a tensile test and Erichsen cupping test to obtain tensile properties as well as the FLC of the material. The constants of the generalized model are first obtained by curve fitting, whereby in this approach least overall error is expected as a single equation is used to predict the FLC of material. Further, it is shown that it would be possible to enhance the accuracy of the model at the cost of losing the applicability of a single mathematical expression for both branches of FLC. In this approach, the generalized model would be calibrated for the right branch based on Swift’s model and for the left branch based on Hill’s model. Finally, the effect of the yield criterion used to describe the plasticity of the material on the predictions of the generalized model is investigated, and it is shown that using the Hosford yield criterion yields better results compared to using the von Mises yield criterion.

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Section: Calibration Of the Generalized Modelmentioning

confidence: 99%

Section: Experimentally Obtained Flcmentioning

confidence: 99%

Section: Experimentally Obtained Flcmentioning

confidence: 99%

Section: Comparison Of Different Calibrationsmentioning

confidence: 99%