Finite element analysis of void growth near a blunting crack tip

1985 ◽  
Vol 33 (1) ◽  
pp. 25-49 ◽  
Author(s):  
N. Aravas ◽  
R.M. McMeeking
2008 ◽  
Vol 77 (17) ◽  
Author(s):  
T. Fett ◽  
G. Rizzi ◽  
D. Creek ◽  
S. Wagner ◽  
J. P. Guin ◽  
...  

Author(s):  
T Kuboki ◽  
H Furuta ◽  
H Yoshikawa ◽  
Y Neishi ◽  
M Akiyama

Die design was optimized for suppressing the void growth in multi-pass drawing. The void index to evaluate the void fraction in multi-pass drawing was first proposed, based on the well-known equation to predict the fracture limit in cold working. Using finite element analysis, the influence of die geometries on the void index was investigated and dies were designed to have the effect of suppressing void with the least minimum die length. A series of experiments was then carried out to verify the validity of the numerical analysis. The densities of drawn bars were measured and voids in microstructures were observed to verify the validity of the proposed void index.


2002 ◽  
Vol 2002.2 (0) ◽  
pp. 59-60
Author(s):  
Mototsugu TANAKA ◽  
Akinori KONO ◽  
Masaki HOJO ◽  
Shojiro OCHIAI

2006 ◽  
Vol 324-325 ◽  
pp. 295-298 ◽  
Author(s):  
Hyeon Chang Choi

An elastic-plastic finite element analysis (FEA) is performed to examine the opening behavior of fatigue crack, where the contact elements are used in the mesh of the crack tip area. The relationship between fatigue crack opening behavior and cyclic crack tip opening displacement was studied in the previous study. In this paper, we investigate the effect of the element size when predict fatigue crack opening behavior using the cyclic crack tip opening displacement obtained from FEA. The cyclic crack tip opening displacement is well related to fatigue crack opening behavior.


1991 ◽  
Vol 239 ◽  
Author(s):  
Ming Y. He ◽  
R. M. McMeeking ◽  
Ning T. Zhang

ABSTRACTBy using the elastic singular field as a prescribed loading condition, small scale yielding solutions are obtained for a crack normal to the interface between a brittle and a ductile material. Results for both a crack in the brittle material and one in the ductile material are obtained by finite element analysis. The crack tip fields obtained by the finite element analysis are compared with the asymptotic solutions. It is found that near the tip the stress fields approach the asymptotic solutions. If the crack is in the brittle material, the high triaxial stresses are developed near the interface ahead of the crack tip.


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