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Computers and Concrete Volume 12, Number 1, July 2013 , pages 037-51 DOI: https://doi.org/10.12989/cac.2013.12.1.037 |
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Computational impact responses of reinforced concrete slabs |
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S.N. Mokhatar, R. Abdullah and A.B.H. Kueh
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| Abstract | ||
| The responses of reinforced concrete slabs subject to an impact loading near the ultimate load range are explored. The analysis is carried out on a simply supported rectangular reinforced concrete slab using a nonlinear explicit dynamic procedure and considering three material models: Drucker-Prager, modified Drucker-Prager, and concrete damaged plasticity, available in the commercial finite element software, ABAQUS/Explicit. For comparison purposes, the impact force-time response, steel reinforcement failure, and concrete perforation pattern are verified against the existing experimental results. Also, the effectiveness of mesh density and damage wave propagation are studied independently. It is shown that the presently adopted finite element procedure is able to simulate and predict fairly accurate the behavior of reinforced concrete slab under impact load. More detailed investigations are however demanded for the justification of effects coming from an imperfect projectile orientation as well as the load and structural surface conditions, including the impulsive contacted state, which are inevitable in an actual impact environment. | ||
| Key Words | ||
| impact load analysis; reinforced concrete slab; finite element; explicit dynamics analysis; perforation | ||
| Address | ||
| S.N. Mokhatar: Department of Civil Engineering, Faculty of Civil and Environmental Engineering, Universiti Tun Hussein Onn Malaysia, 86400 Parit Raja, Johor, Malaysia R. Abdullah: Department of Structure and Materials, Faculty of Civil Engineering, Universiti Teknologi Malaysia, 81310 Skudai, Johor, Malaysia A.B.H. Kueh: Construction Research Centre, Universiti Teknologi Malaysia, 81310 Skudai, Johor, Malaysia | ||