Fracture Mode of Opening for Annular Crack in Anisotropic Composites

The existence and extension of the cracks in anisotropic composites is one of the issues to be considered in fracture mechanics to prevent the devastating effects of cracks. Cracks can be subjected to different types of fracture modes that considering these modes is essential to predict the behavior of cracks. This paper investigates the effects of the fracture mode of opening on the annular crack in an anisotropic composite. By substituting the boundary conditions into governing equations of the medium, the problem reduced to triple integral equations. With the aid of Hankel and Abel integral transforms, the triple integral equations reduced to two Fredholm’s integral equations which are amenable to numerical solutions. The inner and outer stress intensity factors of the annular crack are obtained. From the results, it can be concluded that the stress intensity factor (SIF) are independent of material properties.

کلیدواژه ها:

Composite ، anisotropy ، annular crack ، stress intensity factor