Abstract
A hybrid experimental-numerical procedure, involving moiré interferometry and dynamic finite-element analysis, was used to analyze rapid crack growth in an impact loaded three-point-bend concrete specimen with an offset straight precrack. The dissipated energy rates in the fracture process zone (FPZ), which trails the rapidly extending crack, and in the frontal FPZ ahead of the crack tip, the kinetic-energy rate and energy-release rate were computed. The results showed that while the trailing FPZ was the dominant energy dissipation mechanism, much of the released energy was converted to kinetic energy in the fracturing concrete specimen.
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Yu, CT., Kobayashi, A.S. & Hawkins, N.M. Energy-dissipation mechanisms associated with rapid fracture of concrete. Experimental Mechanics 33, 205–211 (1993). https://doi.org/10.1007/BF02322574
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DOI: https://doi.org/10.1007/BF02322574