期刊
ENGINEERING FRACTURE MECHANICS
卷 196, 期 -, 页码 98-112出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.engfracmech.2018.04.011
关键词
Anisotropy; Normalized plastic zone; Crack growth; Compact-tension-shear specimen
类别
资金
- National Natural Science Foundation of China [51275414]
- Fundamental Research Funds for the Central Universities [3102015BJ (II) ZS007]
- Research Fund of the State Key Laboratory of Solidification Processing (NWPU), China [130-QP-2015]
Hill's normalized plastic zone at crack tip under mode-I and mixed-mode loadings were studied in compact-tension-shear specimen. Effects of the parameters of Hill's criterion on the normalized plastic zone were analyzed. Moreover, the shapes of normalized plastic zones for distortional and total strain-energy-density were investigated. To analyze the crack growth behavior by different normalized plastic zones, fatigue crack growth tests of AA7050-T7451 were performed using digital image correlation technique. The initiation angle predicted by anisotropic R-criterion under mixed-mode loading is closest to experimental data.
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