Anisotropy effect on the stress-based fracture forming limit diagram using a modified Lou-Huh ductile fracture criterion

2013 ◽  
Author(s):  
Namsu Park ◽  
Hoon Huh
Keyword(s):  
Ductile Fracture ◽  
Fracture Criterion ◽  
Forming Limit Diagram ◽  
Forming Limit ◽  
Ductile Fracture Criterion ◽  
Anisotropy Effect

Prediction of Forming Limit in Single Point Incremental Forming With the Ductile Fracture Criterion

2007 ◽  
Author(s):  
Y. Huang ◽  
Y. J. Wang ◽  
J. Cao ◽  
M. Li
Keyword(s):  
Ductile Fracture ◽  
Fracture Criterion ◽  
Incremental Forming ◽  
Single Point ◽  
Forming Limit Diagram ◽  
Theoretical Work ◽  
Negative Slope ◽  
Forming Limit ◽  
Single Point Incremental Forming ◽  
Ductile Fracture Criterion

Many experiments have been conducted to investigate the forming limit in single point incremental forming (SPIF). The forming limit curve (FLC) generated from these experiments follows a linear line with a negative slope in the positive minor strain side of the forming limit diagram (FLD). It is also found that, in general, for the same material subjected to the SPIF process, the failure strain level greatly exceeds the traditional FLC based on theories of the plastic instability [Iseki and Kumon, 1994]. Currently, no theoretical work or no criterion was proposed to predict this FLC in the SPIF. In this paper, the criterion for the ductile fracture [Oyane, 1980] is introduced to try to predict the forming limit of the material in the SPIF. Based on the calculated stress and strain from the finite element simulation and the ductile fracture criterion, the fracture initiation site and the forming limit are predicted. The predicted results are compared with that from the SPIF experiment to verify the feasibility of the proposed method.

scholarly journals Forming Limit Research of 5182 Aluminum Alloy Sheet Based on Lou-2013 Ductile Fracture Criterion

2019 ◽  
Vol 55 (16) ◽  
pp. 47 ◽  
Author(s):  
YANG Zhuoyun ◽  
ZHAO Changcai ◽  
DONG Guojiang ◽  
CHEN Guang ◽  
ZHU Liangjin ◽  
...  
Keyword(s):  
Aluminum Alloy ◽  
Ductile Fracture ◽  
Fracture Criterion ◽  
Alloy Sheet ◽  
Forming Limit ◽  
Aluminum Alloy Sheet ◽  
Ductile Fracture Criterion
Sign in / Sign up

Export Citation Format

Share Document