| 40kgTNT当量爆炸塔的等效静载荷计算 |
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| 引用本文： | 胡八一,张亚军,谷岩,董奇,胡美娥.40kgTNT当量爆炸塔的等效静载荷计算[J].特种结构,2011,28(6):9-11. |
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| 作者姓名： | 胡八一 张亚军 谷岩 董奇 胡美娥 |
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| 作者单位： | 中国工程物理研究院流体物理研究所 绵阳621900 |
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| 基金项目： | 国家自然科学基金项目（0902110;11002131） |
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| 摘 要： | 运用IMPACT3D编码模拟计算了40kg TNT炸药球爆炸在塔体内壁8个特征点上产生的反射超压波形,从而得到各特征点反射超压峰值和其平均值及其正相作用时间；将爆炸塔壳体的运动简化成无阻尼的单自由度振动,由此可导出动力系数Cd的计算表达式,塔体的等效静载荷则是特征点平均超压峰值与动力系数之积.
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| 关 键 词： | 爆炸塔 爆炸载荷 动力系数 等效静载荷 |
Calculation of the Equivalent Static Loading for Blast Containment Chamber with 40kg TNT Equivalence |
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| Affiliation: | Hu Bayi Zhang Yajun GuYan,etc. Institute of Fluid Physics,CAEP,Mianyang 621900,China |
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| Abstract: | The reflective overpressure cuves of 8 typical points on inner surface of the chamber are simulated with the hydrodynamic code IMPACT3D when 40 kg TNT sphere detonated in the blast chamber.The peak overpressure Pr of each point,the positive phase durations and their average peak pressure are also deduced.The calculative formula of the dynamic response factor C_d is derived by the simplified SDOF analysis method and the equivalent static loading of the chamber is given by multiplying the average peak pressure by the dynamic response factor. |
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| Keywords: | Blast containment chamber Blast loading Dynamic response factor Equivalent static loading |
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