Three-dimensional effects at the tip of rounded notches subjected to mode-I loading under cyclic plasticity

摘要: In this work, a comprehensive theoretical and numerical study on the cyclic elastic–plastic notch stress strain distributions is carried out. more detail, incremental plasticity theory, already proposed by other authors to determine actual state arising in two-dimensional or axisymmetric notched components, extended of three-dimensional effects at tip rounded notches plates finite thickness. The analytical frame initially validated considering number plane problems later modified consider effects. Different geometries are investigated, such as specimens with thickness weakened circular holes, U-notches V-notches subjected mode-I loading. Theoretical results based theory compared time-consuming element analyses out commercial code showing very satisfactory agreement. Finally, link between averaged energy density criterion area subtended hysteresis loops tied different components acting has been investigated.