Finite element study on size requirement for stress intensity factor characterization under biaxial loading

✍ Scribed by Kiyoshi Kazawa; Kikuo Kishimoto; Shigeru Aoki

• Book ID: 104616558
• Publisher: Springer Netherlands
• Year: 1990
• Tongue: English
• Weight: 687 KB
• Volume: 43
• Category: Article
• ISSN: 1573-2673
• DOI: 10.1007/bf00035088

✦ Synopsis

The size requirement for applying the stress intensity factor K L under biaxial loading in plane strain and plane stress conditions is studied by performing a two-dimensional elastic-plastic finite element analysis. The extent to which K~ is validly used is determined by comparing the energy release rate G, a linear elastic fracture mechanics parameter, with the J-integral, an elastic-plastic fracture mechanics parameter. The result shows that the minimum value of the remaining uncracked ligament and the crack length for ensuring K-controlled crack tip characteristics is (0.5 ~ 1.O)(Kl/~ys) 2, where ay~ is yield stress depending on the load biaxiality, while ASME suggests 2.5(Kl/ay~) 2 for uniaxial loading.