Characteristics and effects of T-stresses in central-cracked unstiffened and stiffened plates under mode I loading

摘要: Abstract Crack tip plastic zone size is affected by in-plane and out-of-plane T-stresses. The characteristics of T-stresses are obtained in flat plates stiffened with three-dimensional finite element method interaction integral method. Based on stress intensity factors T-stresses, an improved analytical solution proposed for crack size, which corrected relative error analyses, then its application range determined. results show that the plate thickness, length as well stiffener’s location integrity. Both play significant roles size. Furthermore, structure geometry can influence but their effects negligible under some situations, excellent agreement numerical then.