Open AccessNumerical study on the symmetric and asymmetric orientation of the crack branching in 2D plate
Author(s) -
Hendery Dahlan,
Meifal Rusli,
Ali Turab Asad,
Mulyadi Bur
Publication year - 2020
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/830/4/042026
Subject(s) - branching (polymer chemistry) , stress intensity factor , materials science , crack closure , structural engineering , fracture mechanics , geometry , mechanics , composite material , mathematics , physics , engineering
The phenomenon of crack branching is one of the typical fracture behaviours. The effect of crack branching orientation is investigated in this paper. By considering a static branched crack in a 2D plate under uniaxial traction, the numerical study is carried out for two study cases. The first study case is the symmetric crack branching in which the various crack branching length and orientation have the same value between both crack branching. The second case is the asymmetric case crack branching. In this case, both crack branching length has a particular constant value, Moreover, the orientation of first crack branching is constant and then the second one has various values. The stress intensity factors of the crack tips are calculated for both study cases. It is revealed for the symmetric case; the increasing of the crack branching length will increase the value of stress intensity factors K I for various orientations of crack branching. In contrast, the stress intensity factors K I will tend to decrease along with the increasing of the crack branching orientation. Moreover, the stress intensity factors K I of first crack branching will increase, but the stress intensity factors K I of second crack branching will decrease along with increasing of the second orientation crack branching for the asymmetric case. Furthermore, the direction the stress intensity factors K II will prone to change along with the increasing of the crack branching orientation. The stress intensity factor K II tends to increase along with the increasing of the crack branching orientation as well as the increasing of the crack branching length for the symmetric case. And then the increase of constant angle of first crack branching will increase significantly the stress intensity factors K II of the first crack tip along with the increasing of the second crack branching angle for the asymmetric case.