The influence of T-stress on plasticity induced crack closure under plane strain conditions

✍ Scribed by M. Lugo; S.R. Daniewicz

• Publisher: Elsevier Science
• Year: 2011
• Tongue: English
• Weight: 560 KB
• Volume: 33
• Category: Article
• ISSN: 0142-1123
• DOI: 10.1016/j.ijfatigue.2010.08.002

✦ Synopsis

A small scale yielding two-parameter modified boundary layer analysis is performed to study the occurrence of plasticity induced fatigue crack closure under constant amplitude plane strain conditions. A wide range of T-stress and K I levels are considered in the finite element analysis with the purpose of exploring the behavior of the crack opening stress. The influence of the T-stress on crack closure is shown. Crack closure was observed for some values of T-stress, while other values of T-stress resulted in an absence of closure under steady-state conditions.