| Modeling of Normal Perforation of Reinforced Concrete Slabs by a Rigid Projectile |
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| 作者姓名： | CHEN Xiaowei LI Xiaoli |
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| 作者单位： | Institute of Structural Mechanics，China Academy of Engineering Physics，Mianyang 621900，China; State Key Lab of Explosion Science and Technology，Beijing Institute of Technology，Beijing 100088，China |
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| 基金项目： | Supported by the State Key Lab of Explosion Science and Technology of BIT Under Contract (No. KFJJ04-3) |
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| 摘 要： | An analytical model on the normal perforation of reinforced concrete slabs is constructed. The effect of reinforcing bars is further hybridized in a general three-stage model consisting of initial cratering, tunnelling and shear plugging. Besides three dimensionless numbers, i. e. , the impact function /, the geometry function of projectile N and the dimensionless thickness of concrete target X, which are employed to predict the ballistic performance of perforation of concrete slabs, the reinforcement ratioρs of concrete and the tensile strength fs of reinforcing bars are considered as the other main factors influencing the perforation process. Simpler solutions of ballistic performances of normal perforation of reinforced concrete slabs are formulated. Theoretical predictions agree well with individual published experimental data.
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Modeling of Normal Perforation of Reinforced Concrete Slabs by a Rigid Projectile |
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| CHEN Xiaowei,LI Xiaoli.Modeling of Normal Perforation of Reinforced Concrete Slabs by a Rigid Projectile[J].Transactions of Tianjin University,2006,12(Z1). |
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| Authors: | CHEN Xiaowei LI Xiaoli |
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| Abstract: | An analytical model on the normal perforation of reinforced concrete slabs is constructed.The effect of reinforcing bars is further hybridized in a general three-stage model consisting of initial cratering,tunnelling and shear plugging.Besides three dimensionless numbers,i.e.,the impact function /,the geometry function of projectile N and the dimensionless thickness of concrete target χ,which are employed to predict the ballistic performance of perforation of concrete slabs,the reinforcement ratio ρs of concrete and the tensile strength fs of reinforcing bars are considered as the other main factors influencing the perforation process.Simpler solutions of ballistic performances of normal perforation of reinforced concrete slabs are formulated.Theoretical predictions agree well with individual published experimental data. |
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| Keywords: | normal perforation ballistic limit reinforced concrete rigid projectile impact |
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