University of Khartoum

Non-linear Finite Elements Analysis of Reinforced Concrete Slabs Subjected to Blast Loads

Non-linear Finite Elements Analysis of Reinforced Concrete Slabs Subjected to Blast Loads

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Title: Non-linear Finite Elements Analysis of Reinforced Concrete Slabs Subjected to Blast Loads
Author: Daoud, Osama M. A.; Al-Azhary, Khalid I.
Abstract: This paper presents the results of a numerical non-linear finite element modeling of the response of reinforced concrete slabs to the blast loads. A concrete slab with conventional reinforcement was analyzed using multi-degrees of freedom finite element model. A single degree of freedom model was also used in the analysis for comparison. The blast load was modeled as a tri-angular pressure load and distributed uniformly within the slab surface. The nonlinear behavior of concrete and reinforcing steel was taken into account in the finite element model. The effects of applying the relatively high dynamic load with a short duration on the material properties were taken into account by means of dynamic increasing factors. It has been found that the single degree of freedom procedure which is adopted in technical manual “Structures to Resist the effects of Accidental Explosions “TM5- 1300 gives conservative results compared to finite element procedure. Also the displacement –time history for the slab been plotted and it has been found that it was similar to the expected time history illustrated in literature.
URI: http://khartoumspace.uofk.edu/handle/123456789/9796
Date: 2012-02


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