Abstract
The strain-rate effects on the interaction between a matrix crack and an elliptic inclusion in granule composites under dynamic tensile loadings are investigated numerically. It is found that the crack deflection/penetration behavior depends on the relative strength and local curvature of the interface as well as the loading-rate (or strain-rate). For a certain interfacial strength, there exists a critical strain-rate above which the crack can penetrate across the interface; otherwise, the crack deflection occurs. Moreover, the critical strain-rate is found to be dependent only on the local curvature of the interface near the crack tip regardless of the size and shape of the elliptic inclusions.
Original language | English |
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Pages (from-to) | 327-337 |
Number of pages | 11 |
Journal | Journal of Theoretical and Applied Mechanics |
Volume | 51 |
Issue number | 2 |
Publication status | Published - 2013 |
Keywords
- Crack deflection/penetration
- Fracture toughness
- Granule composites
- Interface