| Autor: |
Rajput, Anshuman, Shedbale, Amit Subhash, Khan, Debashis |
| Zdroj: |
Journal of Micromechanics and Molecular Physics; September 2022, Vol. 7 Issue: 3-4 p225-235, 11p |
| Abstrakt: |
In this work, the crack growth behaviour in rock joints under shear load is investigated using the localised gradient damage model (LGDM). The LGDM is shown to capture the mixed-mode fracture phenomena with mesh-independent structural response and sharp localising crack profiles using a simple isotropic scalar damage variable. A simplified staggered scheme based on an operator-split approach is adopted for numerical analyses. The shear box experiments are considered to demonstrate the predictive capabilities of the proposed scheme. Two different crack joint configurations i.e., non-overlapping and overlapping are numerically simulated and the results in terms of crack profiles and structural responses are compared with the experimental results. It is observed that the non-overlapping crack joints fail in mixed-mode whereas overlapping crack joints fail in tensile mode. Further, the non-overlapping crack joints show higher shear load capacity as compared to overlapping crack joints. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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