| Effect of Foam Cladding for Blast Mitigation:Numerical Simulation |
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| 作者姓名： | MA Guowei YE Ziqing ZHANG Xingui |
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| 作者单位： | School of Civil and Environmental Engineering，Nanyang Technological University，Singapore 639798，Singapore; School of Civil and Architectural Engineering，Guangxi University，Nanning 530004，China |
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| 摘 要： | Two numerical simulations were performed to investigate the protective effect of the foam cladding. One simulation is based on a previous experimental study, which is a ballistic pendulum with and without a foam cladding subjected to close-range blast loading. The other model is a steel beam with and without a foam cladding under blast loading. The overpressure due to the blast event can be calculated by the empirical function ConWep or by an arbitrary Lagrangian-Eulerian (ALE) coupling model. The first approach is relatively simple and widely used. The second approach can model the propagation of the blast wave in the air and the interaction between the air and the solid. It is found that the pendulum with the foam cladding always swings to a larger rotation angel compared to a bare pendulum. However, the steel beam with an appropriate foam cladding has a smaller deflection compared to the bare beam without a foam cladding. It is concluded that the protective effect of the foam cladding depends on the properties of the foam and the protected structure.
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Effect of Foam Cladding for Blast Mitigation: Numerical Simulation |
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| MA Guowei,YE Ziqing,ZHANG Xingui.Effect of Foam Cladding for Blast Mitigation:Numerical Simulation[J].Transactions of Tianjin University,2006,12(Z1). |
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| Authors: | MA Guowei YE Ziqing ZHANG Xingui |
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| Abstract: | Two numerical simulations were performed to investigate the protective effect of the foam cladding. One simulation is based on a previous experimental study, which is a ballistic pendulum with and without a foam cladding subjected to close-range blast loading. The other model is a steel beam with and without a foam cladding under blast loading. The overpressure due to the blast event can be calculated by the empirical function ConWep or by an arbitrary Lagrangian-Eulerian (ALE) coupling model. The first approach is relatively simple and widely used. The second approach can model the propagation of the blast wave in the air and the interaction between the air and the solid. It is found that the pendulum with the foam cladding always swings to a larger rotation angel compared to a bare pendulum. However, the steel beam with an appropriate foam cladding has a smaller deflection compared to the bare beam without a foam cladding. It is concluded that the protective effect of the foam cladding depends on the properties of the foam and the protected structure. |
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| Keywords: | foam material blast mitigation ALE LS-DYNA |
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