Fracture prediction in non-isothermal viscous pressure bulging of aluminum alloy sheet using ductile fracture criterion

Aluminum alloy sheet is becoming one of the main materials to take the place of steel components to reduce the vehicle mass due to the advantage of low special density, high strength and corrosion resistance. To predict the formability during the aluminium alloy sheet forming accurately, , a ductile fracture criterion developed by the authors, was for numerical simulation, in this paper. Fracture behavior in square-cup forming of the aluminium alloy LF21M was predicted by means of the criterion. Comparison of the predicted results with experimental values shows that the critical punch stroke and the fracture initiation position in square-cup forming of the aluminium alloy have been predicted successfully by the criterion.

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Ductile fracture of EN-AW 2024 aluminum alloy specimens with notches under biaxial loading. Part 2 – Numerical research and ductile fracture criterion

Theoretical and Applied Fracture Mechanics ◽

10.1016/j.tafmec.2016.06.008 ◽

2016 ◽

Vol 84 ◽

pp. 203-214 ◽

Cited By ~ 11

Author(s):

Lukasz Derpenski ◽

Andrzej Seweryn

Keyword(s):

Aluminum Alloy ◽

Ductile Fracture ◽

Fracture Criterion ◽

Biaxial Loading ◽

Ductile Fracture Criterion ◽

2024 Aluminum Alloy ◽

Numerical Research

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Failure Prediction in Drawing Processes of Mg Alloy Sheet by the FEM and Ductile Fracture Criterion

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.264-265.813 ◽

2011 ◽

Vol 264-265 ◽

pp. 813-818 ◽

Cited By ~ 1

Author(s):

Sang Woo Kim ◽

Young Seon Lee ◽

Beom Soo Kang

Keyword(s):

Ductile Fracture ◽

Fracture Criterion ◽

Elevated Temperatures ◽

Failure Prediction ◽

Fracture Initiation ◽

Tensile Tests ◽

Alloy Sheet ◽

Fe Analysis ◽

Uniaxial Tensile ◽

Ductile Fracture Criterion

In this work, in order to predict the forming failure of AZ31 magnesium alloy sheet in drawing process at elevated temperatures, a series of square cup tests at various temperatures and FE analyses were carried out. The critical damage values and the mechanical properties dependent on strain rates and temperatures were evaluated from uniaxial tensile tests and those were utilized to the forming failure prediction using FE analysis. Based on the plastic deformation history obtained from FE analysis and Cockcroft and Latham’s ductile fracture criterion, the fracture initiation time and location were predicted and verified with the experimental results.

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Fracture prediction in hydraulic bulging of AISI 304 austenitic steel sheets based on a modified ductile fracture criterion

10.1063/1.3623645 ◽

2011 ◽

Author(s):

Y. Xu ◽

H. W. Song ◽

S. H. Zhang ◽

M. Cheng

Keyword(s):

Ductile Fracture ◽

Austenitic Steel ◽

Fracture Criterion ◽

Fracture Prediction ◽

Ductile Fracture Criterion ◽

Aisi 304 ◽

Steel Sheets ◽

Hydraulic Bulging

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Formability Predictions of Deep Drawing Process for Aluminum Alloy A1100-O Sheets by Using Combination FEM with ANN

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.472-475.781 ◽

2012 ◽

Vol 472-475 ◽

pp. 781-786

Author(s):

Duc Toan Nguyen ◽

Young Suk Kim ◽

Dong Won Jung

Keyword(s):

Finite Element ◽

Aluminum Alloy ◽

Ductile Fracture ◽

Deep Drawing ◽

Fracture Criterion ◽

Fem Simulation ◽

Drawing Process ◽

Ductile Fracture Criterion ◽

Element Analysis ◽

Deep Drawing Process

The FEM simulation results of deep drawing process are carried out to create training cases for the artificial neural network (ANN), and then the well-trained ANN(s) is used to predict the formability of aluminum alloy A1100-O sheets. The OYANE’ s ductile fracture criterion equation [J. Mech. Work. Technol. 4 (1980), pp. 65-81] was implemented to predict the formability of deep drawing process. This ductile fracture criterion is introduced and evaluated from the histories of stress and strain calculated by means of finite element analysis in order to get the ductile fracture value (I). The resolution of the results of ductile fracture criterion equations is carried out via a VUMAT user material, using ABAQUS/Explicit finite element code. From the calculative results of FEM simulation with the changing of various parameters, the formability predictions using ANN methodology was investigated by comparing with random case studies of FEM results and shown good agreements

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