Numerical Studies of End Effect on Crack Propagation Behavior of Brittle Specimen Containing Pre-Existing Crack under Uniaxial Compression

Abstract:

In this paper, a Material Failure Process Analysis code (MFPA2D) was employed to investigate the interaction of end effect zone of specimen with the wing crack propagation inside the brittle specimen containing pre-existing flaws under uniaxial compression comparing with the experimental results. The numerical results show that the shorter the distance between the pre-existing flaw and the specimen's end , the slower the crack propagation process and the shorter wing propagation length is , and vice versa. In addition, the end effect zone was also influenced by the wing crack propagation.

• Periodical: Key Engineering Materials (Volumes 353-358)
• Pages: 1049-1052
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.353-358.1049
• Online since: September 2007
• Authors: Ming Li Huang, Shan Yong Wang, Wei Lu, Wan Cheng Zhu
• Keywords: Crack, End Effect, Numerical Simulation, Pre-Existing Crack

References

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[2] 60 0. 00 0. 10 0. 20 0. 30 0. 40 0. 50 0. 60 0. 70 0. 80 Cur r ent st r ess/ Peak st r ess L/ a The pr opagat i on l engt h f r om poi nt A ( Exper ment al r esul t s) The pr opagat i on l engt h f r om poi nt B ( Exper ment al r esul t s) The pr opagat i on l engt h f r om poi nt A ( Numer i cal r esul t s) The pr opagat i on l engt h f r om Fig6. Numerical results for end effect zone and wing propagation versus the ratio of current stress to peak stress.

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