A bulge-test based viscoplastic model for superplastic deformation behaviour of a magnesium alloy

Majidi, Omid; Sorgente, Donato; Guglielmi, Pasquale; Palumbo, G.

doi:10.1016/j.cirpj.2021.09.005

Cited by 1 publication

(3 citation statements)

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“…They analyzed the plastic and mechanical properties of this steel under uniaxial and biaxial loading. Majidi et al [ 18 ] performed experimental and numerical research of the AZ31B magnesium alloy using the bulge test. Their numerical results of the superplastic deformation behavior of magnesium alloy correlated with the results from the experiments.…”

Section: Introductionmentioning

confidence: 99%

“…FEA is an established tool for the calculation and analysis of sheet deformation [ 13 , 14 , 15 , 16 ]. The simulation program should be efficient, accurate and easy to use [ 17 , 18 , 19 ]. Work by Majidi et al [ 18 ] was focused on accurate modelling of the superplastic forming process.…”

Section: Introductionmentioning

confidence: 99%

“…The simulation program should be efficient, accurate and easy to use [ 17 , 18 , 19 ]. Work by Majidi et al [ 18 ] was focused on accurate modelling of the superplastic forming process. They have used the Variable m-value Viscoplastic (VmV) model in ABAQUS software.…”

Section: Introductionmentioning

confidence: 99%

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Experimental and Numerical Thickness Analysis of TRIP Steel under Various Degrees of Deformation in Bulge Test

et al. 2022

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To design a reliable forming process it is necessary to determine the mechanical and formability properties of the processed material, which are used as input parameters for forming simulations. High-strength steel is irreplaceable as a material for producing the deformation zones of current automobiles. This type of steel can be processed by conventional or unconventional forming methods. In the sheet forming process, the material is usually under uniaxial and biaxial stress. The bulge test is utilized for determination of biaxial stress–strain curves, which are often used as input material data for forming simulations. In this work, numerical simulations of bulge tests using TRIP RAK 40/70 steel were performed to study the impact of yield criteria and hardening laws on the accuracy of thickness prediction of the deformed steel sheet. Additionally, the impact of different solvers and integration schemes on the thickness prediction was tested. Furthermore, the impact of various degrees of deformation (various dome heights) on thickness prediction accuracy was evaluated. Numerical results showed a good correlation with experimental data. When the Hill90 yield criterion was used, the software with implicit solver was more accurate in predicting thickness compared to software with explicit integration scheme, in most cases. In addition, the thickness prediction of parts with lower deformation was more accurate compared to parts with greater deformation (higher dome height).

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Section: Introductionmentioning

confidence: 99%