Modelling the Voids Growth in Ductile Fracture

2016 ◽  
pp. 135-203
Author(s):  
Mihai Gologanu ◽  
Dan-Sorin Comsa ◽  
Abdolvahed Kami ◽  
Dorel Banabic
Keyword(s):  
Ductile Fracture ◽  
Voids Growth

scholarly journals Applications of the Gurson’s model in sheet metal forming

2018 ◽  
Vol 190 ◽  
pp. 01002 ◽  
Author(s):  
Dorel Banabic ◽  
Abdolvahed Kami
Keyword(s):  
Ductile Fracture ◽  
Void Growth ◽  
Flow Direction ◽  
Forming Limit ◽  
Order Effects ◽  
Sheet Metals ◽  
Super Plastic ◽  
Voids Growth ◽  
Metallic Parts ◽  
Gurson's Model

Recent advances in the modelling of metals encompass modelling of metals structural inhomogeneity, damage, porosity, twinning/untwining and non-local and second order effects. This presentation is focused on modelling the void growth in ductile fractures. The growth and coalescence of microscopic voids are the main mechanisms in ductile fracture of bulk metallic parts. In sheet metals, ductile fracture is preceded by necking during which existing voids do not have significant growth. However, necking is highly sensitive to plastic flow direction which in turn is sensitive to the presence of voids. Also, under biaxial strain loading, the final fracture in the necking region is still controlled by void growth; hence an accurate fracture prediction is crucial for crash simulations. Finally, in super-plastic sheet forming, void growth and coalescence may precede or accompany necking. Therefore, there is as increasing interest in modelling of voids in the sheet metals. As an application, we show how the predictions of some forming limit curves (FLCs) can be affected by accurate simulation of voids growth.

Methods and Technologies of Parallel Computing for Mathematical Modeling of Stress-Strain State of Constructions Taking into Account Ductile Fracture

2014 ◽  
Vol 46 (11) ◽  
pp. 23-35 ◽  
Author(s):  
Elena A. Velikoivanenko ◽  
Alexey S. Milenin ◽  
Alexander V. Popov ◽  
Vladimir A. Sidoruk ◽  
Alexander N. Khimich
Keyword(s):  
Mathematical Modeling ◽  
Parallel Computing ◽  
Ductile Fracture ◽  
Strain State ◽  
Stress Strain ◽  
Stress Strain State

Ductile Fracture of a Marine Structural Steel based on HC-DSSE Combined Fracture Strain Formulation

2019 ◽  
Vol 56 (1) ◽  
pp. 82-93
Author(s):  
Sung-Ju Park ◽  
Kangsu Lee ◽  
Burak Can Cerik ◽  
Younghyn Kim ◽  
Joonmo Choung
Keyword(s):  
Ductile Fracture ◽  
Structural Steel ◽  
Fracture Strain ◽  
Strain Formulation

The T-criterion applied to ductile fracture

1982 ◽  
Vol 20 (4) ◽  
pp. R125-R130 ◽  
Author(s):  
P. S. Theocaris ◽  
N. P. Andrianopoulos
Keyword(s):  
Ductile Fracture
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