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International Journal of Material Forming

Erschienen in:

01.01.2023 | 30th Anniversary of the Korean Society for Technology of Plasticity

Large strain flow curve characterization considering strain rate and thermal effect for 5182-O aluminum alloy

verfasst von: Hongchun Shang, Chong Zhang, Songchen Wang, Yanshan Lou

Erschienen in: International Journal of Material Forming | Ausgabe 1/2023

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Abstract

This research aims to characterize the effect of strain rate and temperature on flow behaviours under large plastic deformation for 5182-O aluminum alloy. Experiments are conducted with both dogbone and notched specimens at different strain rates and temperatures. All tests are analyzed by inverse engineering to identify the strain hardening behaviour at large plastic strains up to fracture. The experimental results show the highly coupling effect of strain rate and temperature. The two hardening laws of Swift-Voce model and p-model are calibrated by the finite element model update procedure, and the combination with the smallest error is selected as the input set of the artificial neural network (ANN) model. Then the dynamic hardening behaviours are modelled by the ANN to consider the highly coupled effect. The calibrated ANN model is further applied to ABAQUS/Explicit for numerical simulation under different loading conditions. Taking the finite element calculation time and prediction accuracy into consideration, the ANN model with single hidden layer optimized by particle swarm optimization algorithm is finally selected. The calibration results of the selected ANN model have the best consistency with an acceptable level of numerical computation time.

Vorheriger Artikel Accuracy evolution and path compensation in 3D laser cutting process for advanced high strength steel parts: numerical analysis and experimental investigation

Nächster Artikel Validation of axial and transverse force–displacement responses and principal strain rate ratios in the critical zone as a precursor to anisotropic damage prediction in metal sheets

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Titel: Large strain flow curve characterization considering strain rate and thermal effect for 5182-O aluminum alloy
verfasst von: Hongchun Shang
Chong Zhang
Songchen Wang
Yanshan Lou
Publikationsdatum: 01.01.2023
Verlag: Springer Paris
Erschienen in: International Journal of Material Forming / Ausgabe 1/2023
Print ISSN: 1960-6206
Elektronische ISSN: 1960-6214
DOI: https://doi.org/10.1007/s12289-022-01721-4

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