Crack initiation condition in the specimens of ductile materials |
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| Authors: | Wei-Hua Tai |
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| Affiliation: | Department of Mathematics and Mechanics, University of Science and Technology Beijing, Beijing 100083, People's Republic of China |
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| Abstract: | In this paper, the elasto-plastic Finite Element Method was used to simulate the ductile fracture initiation of four kinds of specimens made of low-carbon steel No. 20 (Chinese steel), and the damage parameter VD was calculated for these specimens. The results showed that the damage mechanics criterion VD proposed by the author and B. X. Yang [Engng Fracture Mech. 27, 371–386 (1987)], could be applied to predict the crack initiation. Also, the relationship between the damage parameter VDc and the crack tip opening displacement was discussed in this study. |
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