ZHOU Xiao-ping, WANG Jian-hua, ZHANG Yong-xing. Bifurcation condition of crack pattern in two-dimensional parallel cracks under far field shear stress[J]. 2007, 28(4).
ZHOU Xiao-ping, WANG Jian-hua, ZHANG Yong-xing. Bifurcation condition of crack pattern in two-dimensional parallel cracks under far field shear stress[J]. 2007, 28(4).DOI:
The interaction among cracks is studied by using pseudo-traction method. Bifurcation condition of crack growth pattern can be expressed by the crack length/ spacing ratio
. The interution among cracks leads to bifurcation of crack growth patterns if is larger than a critical value . Bifurcation condition for arrays of 2 parallel cracks
arrays of 3 parallel cracks and arrays of infinite arrays of cracks subjected to shear stress is analysed theoretically. The value of is 0.816 497 5
0.717 572 8 and 0.636 638 5 for arrays of 2 parallel cracks
arrays of 3 parallel cracks and arrays of infinite arrays of cracks respectively. The numerical results show that the value of decreases with increasing the number of cracks.