Numerical Analysis of Fracture Parameters of Multiple Interacting Cracks

Yong Jie Liu; Qing Yuan Wang; Xiang Guo Zeng; Da Li Lv

doi:10.4028/www.scientific.net/KEM.417-418.277

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HomeKey Engineering MaterialsKey Engineering Materials Vols. 417-418Numerical Analysis of Fracture Parameters of...

Numerical Analysis of Fracture Parameters of Multiple Interacting Cracks

Abstract:

Multiple interacting crack problems for 3-point bending specimen were studied in this article. Two symmetrical minor cracks were placed in the structure, besides a main crack at the middle, and using the finite element method program ABAQUS, the energy release rate (G) and the stress intensity factor (SIF) were evaluated based on the virtual crack closure technology（VCCT）in conjunction with finite element analysis(FEA). Then, effects of variation in relative lengths and locations of the minor cracks on the stress intensity factors of the main crack were obtained and analyzed. Finally, the approach was applied to dynamic analysis, and influences of interacting effects among the cracks on dynamic fracture parameters were also studied.

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Periodical:

Key Engineering Materials (Volumes 417-418)

Pages:

277-280

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.417-418.277

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Online since:

October 2009

Authors:

Yong Jie Liu, Qing Yuan Wang, Xiang Guo Zeng, Da Li Lv

Keywords:

Fracture Parameter, Multiple Cracks Interaction, VCCT

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References

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