Abstract
Since the pioneering work of Griffith, Linear Elastic Fracture Mechanics has been widely experimentally validated and successfully developed in solid mechanics modeling. However, recent theoretical models applying the energy balance found in Griffith theory specifically for quasi-static confined comminution have until now not been systematically confronted to experiments. In this study, we analyze data of compression tests on crushable sand, where grain breakage has been triggered by flooding the initially dry material at constant stresses. We consider a partition of the dissipation between surface fracture energy and the rearrangement of fragments and grains surrounding crushed particles. Our results show that the role of the surface fracture energy is stressdependent and that its influence becomes less significant at high stresses.
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Ovalle, C., Dano, C. & Hicher, PY. Experimental Data Highlighting the Role of Surface Fracture Energy in Quasi-Static Confined Comminution. Int J Fract 182, 123–130 (2013). https://doi.org/10.1007/s10704-013-9833-4
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DOI: https://doi.org/10.1007/s10704-013-9833-4