Overview on the Prediction Models for Sheet Metal Forming Failure: Necking and Ductile Fracture

2018 ◽  
Vol 31 (3) ◽  
pp. 259-289 ◽  
Author(s):  
Qi Hu ◽  
Feifei Zhang ◽  
Xifeng Li ◽  
Jun Chen
Keyword(s):  
Ductile Fracture ◽  
Sheet Metal ◽  
Sheet Metal Forming ◽  
Metal Forming ◽  
Prediction Models

scholarly journals FEM Investigation of Ductile Fracture Prediction in Two-Point Incremental Sheet Metal Forming process

2017 ◽  
Vol 207 ◽  
pp. 836-841 ◽  
Author(s):  
Chenhao Wang ◽  
William J.T. Daniel ◽  
Haibo Lu ◽  
Sheng Liu ◽  
Paul A. Meehan
Keyword(s):  
Ductile Fracture ◽  
Sheet Metal ◽  
Sheet Metal Forming ◽  
Metal Forming ◽  
Fracture Prediction ◽  
Forming Process ◽  
Incremental Sheet Metal Forming ◽  
Metal Forming Process

Prediction and analysis of ductile fracture in sheet metal forming—Part I: A modified Ayada criterion

2014 ◽  
Vol 23 (8) ◽  
pp. 1189-1210 ◽  
Author(s):  
HS Liu ◽  
MW Fu
Keyword(s):  
Finite Element ◽  
Plastic Strain ◽  
Ductile Fracture ◽  
Sheet Metal ◽  
Sheet Metal Forming ◽  
Metal Forming ◽  
Fracture Criterion ◽  
Ductile Fracture Criterion ◽  
Wide Range ◽  
Stress States

A modified ductile fracture criterion is proposed based on the traditional Ayada criterion and coded into the finite element simulation platform of VUMAT/ABAQUS for prediction and analysis of ductile fracture in metal plastic strain processes. In this modified ductile fracture criterion, stress triaxiality is taken into account, and more importantly, the exponential effect of the equivalent plastic strain on the damage behavior, which is generally ignored in other ductile fracture criteria, is also considered. The material related constants in the modified ductile fracture criterion are determined by tensile tests together with finite element simulations. The applicability and reliability of the ductile fracture criterion in ductile fracture prediction in two types of classic stress states, viz. shear stress, tensile stress in sheet metal forming, are investigated based on the deformation behavior and fracture occurrence in two case studies with two typical types of materials, i.e. Al 6061 and T10A. The materials have a wide range of plasticity. The simulation and experimental results verify the applicability and reliability of the developed ductile fracture criterion in prediction of the ductile fracture with and without necking in different stress states of plastic strain.

Effect of hardening models on different ductile fracture criteria in sheet metal forming

2014 ◽  
Vol 9 (3) ◽  
pp. 261-267 ◽  
Author(s):  
Shahram Abbasnejad Dizaji ◽  
Haluk Darendeliler ◽  
Bilgin Kaftanoğlu
Keyword(s):  
Ductile Fracture ◽  
Sheet Metal ◽  
Sheet Metal Forming ◽  
Metal Forming ◽  
Fracture Criteria ◽  
Ductile Fracture Criteria ◽  
Hardening Models
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