Shear Localization and Comminution of Granular and Fragmented Silicon CarbideReportar como inadecuado




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Abstract : Granular and pre-fractured bulk silicon carbide were subjected to high strain, high-strain-rate deformation by radial symmetric collapse of a thick-wall cylinder. Profuse shear-band formation was observed, indicating the deformation had inhomogeneous characteristics. The granular silicon carbide had lower shear-band displacement, spacing between shear bands and thickness of shear bands than the pre-factured silicon carbide. Bimodal particle size distribution was seen inside the shear bands for both materials. The shear localization in the granular silicon carbide was primarily due to particle break-up comminution and rearrangement of the comminuted particles. The shear bands in the pre-fractured silicon carbide were formed through the incorporation of fragments from the shear-band interfaces and the erosion of fragments inside the shear band.





Autor: C. Shih V. Nesterenko M. Meyers

Fuente: https://hal.archives-ouvertes.fr/



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