Crack normal to layered elastic periodically stratified space

The paper deals with the plane problem of stress distribution near crack tips in an elastic periodically stratified space. The crack is normal to the layering in a two-constituent laminated composite. The lower and upper crack surfaces are loaded symmetrically by arbitrary normal loads. The problem is approximated using the homogenized model with micro-local parameters [C. Woźniak, A nonstandard method of modelling of thermoelastic periodic composites, Int. J. Eng. Sci. 25 (1987) 483-499; S.J. Matysiak, C. Woźniak, Micromorphic effects in a modeling of periodic multilayered elastic composites, Int. J. Eng. Sci. 25 (1987) 549-559]. The stress intensity factors are obtained and the influence of geometrical and mechanical parameters and the location of crack tips on the SIF's values are investigated.