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Effect of the Reinforced Concrete Slab on the Blast Shock Wave Properties

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Combustion, Explosion, and Shock Waves Aims and scope

Abstract

Based on advanced numerical simulation technologies, such as the birth and death of element technique, large displacement technique, and fluid-solid coupling mechanism, and combined with the strain rate effect of concrete and steel materials, a complicated finite element model of a TNT–air–slab system is set up using the nonlinear explicit dynamic finite element analysis software LS-DYNA. A series of numerical simulation analyses is conducted on the reinforced concrete slab to evaluate the properties of the blast shock wave at the back of the slab. First, the typical characteristics of the blast shock waves at the front and back of the slab are described concisely. Then, the relation between the incident wave and the reflected wave is built by further studying the influence of the slab on the properties of the reflected wave at the front of the slab. And then, the relation between the reflected wave and the reformed wave is established by analyzing the effect of the slab on the change law of the reformed wave at the back of the slab. Finally, the basic steps for predicting the properties of the reformed wave are given considering the effect of the reinforced concrete slab on it. In addition, the case study demonstrates that the predicted results are true and reliable, and it indicates that the proposed method can accurately and effectively predict the properties of the reformed wave at the back of the reinforced concrete slab.

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Authors and Affiliations

  1. Shaanxi Key Laboratory of Safety and Durability of Concrete Structures, Xijing University, 710123, Xi’an, China

    S.-C. Lin & S. Gao

  2. Post-doctoral Mobile Station of Civil Engineering, School of Civil Engineering, Tianjin University, 300072, Tianjin, China

    S.-C. Lin & J.-Q. Han

  3. College of Civil and Architectural Engineering, North China University of Science and Technology, 063210, Tangshan, China

    S.-C. Lin

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  1. S.-C. Lin
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  2. S. Gao
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  3. J.-Q. Han
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Correspondence to S.-C. Lin.

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Lin, SC., Gao, S. & Han, JQ. Effect of the Reinforced Concrete Slab on the Blast Shock Wave Properties. Combust Explos Shock Waves 56, 731–740 (2020). https://doi.org/10.1134/S0010508220060131

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  • DOI: https://doi.org/10.1134/S0010508220060131

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