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http://dx.doi.org/10.7734/COSEIK.2021.34.2.85

Modified K&C Model for Numerical Analysis of Steel-Fiber-Reinforced Concrete Structure  

Park, Gang-Kyu (Structural Engineering Research Division, Korea Institute of Civil Engineering and Building Technology)
Lee, Minjoo (Department of Civil and Environmental Engineering, Korea Advanced Institute of Science and Technology)
Publication Information
Journal of the Computational Structural Engineering Institute of Korea / v.34, no.2, 2021 , pp. 85-91 More about this Journal
Abstract
This paper introduces a modified Karagozian & Case concrete model (K&C model) for the numerical analysis of a steel-fiber-reinforced concrete (SFRC) structure subjected to projectile impact. The original K&C model was calibrated to consider the effects of steel fibers accurately by modifying the strength surfaces and input parameters. Single element tests were then conducted and compared with uniaxial and triaxial compressive data to verify the modified model. With the application of a dynamic increase factor, the finite element model of the SFRC structure subjected to projectile impact was constructed. Thereafter, the applicability of the modified material model was examined by comparisons with the experimental results.
Keywords
K&C model; steel-fiber-reinforced concrete; finite element model; dynamic analysis;
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