A complementary eta(pl) approach in J and CTOD estimations for clamped SENT specimens

作者：Wang Enyang^*; De Waele Wim; Hertele Stijn

来源：Engineering Fracture Mechanics, 2015, 147: 36-54.

DOI：10.1016/j.engfracmech.2015.07.043

• Single-edge notched tension (SENT)
• J-integral (J)
• Crack-tip opening displacement (CTOD)
• Finite element analysis (FEA)
• Plastic eta factor (eta(pl))

A complementary plastic eta factor (eta(pl)) approach that incorporates both strain hardening and thickness corrections in the J and CTOD estimations is developed for the clamped single-edge notched tension (SENT) specimen in the present study. A series of extensive two-dimensional (2D) plane-strain and three-dimensional (3D) finite element analyses (FEAs) is carried out. For a given specimen, the tip, value is evaluated from corresponding numerical data. The coefficients of strain hardening correction terms and thickness correction terms are derived from 2D plane-strain and 3D FEAs, respectively. This newly developed approach is verified from results for specimens with BS-8571 recommended geometric configurations.

• 出版日期2015-10