Local stress intensity factors for cracks in a material with parallel channels of various cross-section

 

I. M. Frantsevich Institute for Problems of Materials Science of the NAS of Ukraine, Krzhizhanovsky str., 3, Kyiv, 03142, Ukraine
Mathematical Models and Computing Experiment in Material Science - Kiev: Frantsevich Institute for Problems of Materials Science NASU, 2010, #12
http://www.materials.kiev.ua/article/360

Abstract

Changes of local stress intensity factors (SIF) are defined at extending of a flat main crack with rectilinear front, perpendicularly to system of parallel pore channels, with cross-sections forms of: a circle, an equilateral triangle, a triangle with the concave sides of constant curvature and a radiate three-beam starlike crack. It is shown that for materials with starlike cross-sections of channels in absentia of external loadings that are perpendicular to a direction of channels local SIF on fronts main and channel cracks have comparable values.


CHANNEL CRACK, CROSS SECTION OF CHANNEL, INTERACTION OF CRACKS, MAIN CRACK, PORE CHANNEL, STRESS INTENSITY FACTOR