Av. Dyskin et al., ASYMPTOTIC SOLUTION FOR LONG CRACKS EMANATED FROM A PORE IN COMPRESSION, International journal of fracture, 62(4), 1993, pp. 307-324
The 2-D problem of two collinear radial cracks emanating from a circul
ar pore towards the applied uniaxial compression has been considered.
Long crack asymptotic expressions have been obtained for the stress in
tensity factor and the area of the crack opening. Comparison with nume
rical results has shown that this solution can still be used even if t
he crack length reaches half of the pore radius. On the basis of this
solution, an approximate method considering the pair of cracks as a si
ngle long crack subjected to the stress field generated separately fro
m the pore has been proved to give an acceptable result. The approxima
te method has also been extended to the 3-D case.