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Home > Publications > International Concrete Abstracts Portal
The International Concrete Abstracts Portal is an ACI led collaboration with leading technical organizations from within the international concrete industry and offers the most comprehensive collection of published concrete abstracts.
Title: Energy-Based Penetration Model for Local Impact- Damaged Concrete Members
Author(s): Hyeon-Jong Hwang, Sanghee Kim, and Thomas H.-K. Kang
Publication: Structural Journal
Appears on pages(s): 1189-1200
Keywords: impact load; kinetic energy; penetration; perforation; residual velocity
Abstract:Numerous empirical equations have been developed that predict the local damage of a concrete target subjected to an impact load. This is in part due to the fact that the local failure mechanism of concrete on collision is complicated. In this present study, an energy-based model is analytically proposed to better estimate the penetration depth and residual velocity of a projectile. The resistant energy of the concrete target and kinetic energy of the projectile are considered for spalling, tunneling, and scabbing failure modes. The predicted penetration depth and residual velocity are then compared to those from 414 existing test specimens. Based on the comparison, the proposed model predicts a variety of test results with reasonable precision. Further, to prevent the perforation failure of a concrete target, a safety factor is proposed that can be applied to the developed model.
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